Mech - User contributions [en]

Brushless DC Motors

2013-09-18T16:26:49Z

AndrewGriesemer: /* Commutation Circuitry */

[[Category:Actuators]][[Category:Motors]]
===Overview===
Brushless DC (BLDC) motors are similar to [[Brushed DC Motor Theory|Brushed DC Motors]], except the commutation is done electronically, and the permanent magnets are on the rotor and the coils on the stator. Instead of using the brushes and the rotation of the commutator to power the coils, external circuitry is used. Brushless DC motors are generally more expensive and take extra effort in order to drive. However, BLDCs can be more efficient under light loads, typically have better power-to-weight ratios and produce less wear on internal components.

===Commutation Circuitry===
[[File:Mosfet_H-Bridge.png|200px|right|Mosfet H-Bridge Setup]]
Unlike a DC motor, which is automatically commutated by the rotation of its brushes, a brushless DC motor can only be commutated by changing the voltage level on each of its inputs. For a three phase motor there are three inputs and during each phase of the commutation one input of the BLDC motor will be at the voltage supply level, one will be floating and one will be at ground. This can be accomplished using an H-bridge chip. For higher current applications the N-Channel MOSFET H-bridge configuration shown can be used.

===Rotational Sensors===
To rotate the BLDC motor, the stator windings must be energized in a sequence. The commutation circuitry needs to know the rotor position in order to energize the correct winding. A typical BLDC motor comes with a Hall Effect sensor encoder embedded in the stator. In a three phase motor there are three Hall sensors. Whenever the rotor magnetic poles pass near the Hall sensors, they give a high or low signal, indicating the N or S pole is passing near the sensors. Based on the combination of these three Hall sensor signals, the exact sequence of commutation can be determined. In a more advanced controller the position of the rotor is determined by the back EMF on the input lines. This method is called sensorless mode because it does not require the use of Hall Effect sensors.

==Commutation Pattern==
[[File:Commutation.png|400px|right|Commutation Diagram for the Pittman 443S013]]
For a motor with a hall effect sensor encoder a typical commutation diagram is shown in the image to the right. The commutation diagram was taken from the [http://www.servo2go.com/support/downloads/4443S013.pdf| Pittman Motor 4443S013 Datasheet]. By reading the state of the three hall effect sensors the motor controller can set the state of the motor inputs.

==References==
*Wikipedia, "Brushless DC electric motor", http://en.wikipedia.org/wiki/Brushless_motors

Brushless DC Motors

2013-09-18T16:19:10Z

AndrewGriesemer: /* Overview */

[[Category:Actuators]][[Category:Motors]]
===Overview===
Brushless DC (BLDC) motors are similar to [[Brushed DC Motor Theory|Brushed DC Motors]], except the commutation is done electronically, and the permanent magnets are on the rotor and the coils on the stator. Instead of using the brushes and the rotation of the commutator to power the coils, external circuitry is used. Brushless DC motors are generally more expensive and take extra effort in order to drive. However, BLDCs can be more efficient under light loads, typically have better power-to-weight ratios and produce less wear on internal components.

===Commutation Circuitry===
[[File:Mosfet_H-Bridge.png|200px|right|Mosfet H-Bridge Setup]]
Unlike a DC motor, which is automatically commutated by the rotation of its brushes, a brushless DC motor can only be commutated by changing the voltage level on each of its three inputs. During each phase of the commutation one input of the BLDC motor will be at the voltage supply level, one will be floating and one will be at ground. This can be accomplished using an H-bridge chip. For higher current applications the N-Channel MOSFET H-bridge configuration shown can be used.

Because the controller must change the voltage levels on the motor inputs, the controller needs a way of determining the motor's rotational position. A typical motor will include a Hall Effect sensor encoder or some other type of rotary encoder. More advanced drive systems will use the back EMF in the coils to determine the rotor position.

==Commutation Pattern==
[[File:Commutation.png|400px|right|Commutation Diagram for the Pittman 443S013]]
For a motor with a hall effect sensor encoder a typical commutation diagram is shown in the image to the right. The commutation diagram was taken from the [http://www.servo2go.com/support/downloads/4443S013.pdf| Pittman Motor 4443S013 Datasheet]. By reading the state of the three hall effect sensors the motor controller can set the state of the motor inputs.

==References==
*Wikipedia, "Brushless DC electric motor", http://en.wikipedia.org/wiki/Brushless_motors

Driving a BLDC Motor

2013-09-11T16:39:52Z

AndrewGriesemer:

This BLDC driver was originally built around the dsPIC33FJ12MC201 breakout board designed as a [http://hades.mech.northwestern.edu/index.php/NU32:_Using_the_dsPIC33FJ12MC201_QEI_to_SPI_board| quadrature encoder decoder to SPI]. For this version the chip was upgraded to the dsPIC33FJ12MC202 which has more pins.

The circuit uses the [http://www.intersil.com/en/products/power-management/mosfet-drivers/half--full-bridge-and-three-phase-drivers/HIP4086.html| HIP4086] 80V, 500mA, 3-Phase MOSFET Driver to drive 3 N-channel MOSFET H-bridges. The gate driver chip solves two issues with driving an N-channel MOSFET H-bridge using 3.3V logic level outputs. It amplifies the output voltage from 3.3V to 12V to fully saturate the gates of the MOSFETs. It also drives the High Side N-channel MOSFET gate to Vmot + 12V. To drive the MOSFETs the Gate-to-Source Voltage must be above the threshold voltage. This is easy on the low side MOSFETs because the source is tied to ground. For the high side MOSFET source is tied to the output voltage of the H-bridge. This means that in order to turn the high side MOSFET fully on it is necessary to pull the gate voltage level to Vmot + 12V, where Vmot is the motor drive voltage. The HIP4086 accomplishes this through the use of bootstrap capacitors.

Driving a BLDC Motor

2013-09-11T16:38:55Z

AndrewGriesemer:

This BLDC driver was originally built around the dsPIC33FJ12MC201 breakout board designed as a [http://hades.mech.northwestern.edu/index.php/NU32:_Using_the_dsPIC33FJ12MC201_QEI_to_SPI_board| quadrature encoder decoder to SPI]. For this version the chip was upgraded to the dsPIC33FJ12MC202 which has more pins. The circuit uses the [http://www.intersil.com/en/products/power-management/mosfet-drivers/half--full-bridge-and-three-phase-drivers/HIP4086.html| HIP4086] 80V, 500mA, 3-Phase MOSFET Driver to drive 3 N-channel MOSFET H-bridges. The gate driver chip solves two issues with driving an N-channel MOSFET H-bridge using 3.3V logic level outputs. It amplifies the output voltage from 3.3V to 12V to fully saturate the gates of the MOSFETs. It also drives the High Side N-channel MOSFET gate to Vmot + 12V. To drive the MOSFETs the Gate-to-Source Voltage must be above the threshold voltage. This is easy on the low side MOSFETs because the source is tied to ground. For the high side MOSFET source is tied to the output voltage of the H-bridge. This means that in order to turn the high side MOSFET fully on it is necessary to pull the gate voltage level to Vmot + 12V, where Vmot is the motor drive voltage.

Driving a BLDC Motor with the dsPIC33FJ12MC202

2013-09-11T16:38:05Z

AndrewGriesemer: moved Driving a BLDC Motor with the dsPIC33FJ12MC202 to Driving a BLDC Motor

#REDIRECT [[Driving a BLDC Motor]]

Driving a BLDC Motor

2013-09-11T16:38:05Z

AndrewGriesemer: moved Driving a BLDC Motor with the dsPIC33FJ12MC202 to Driving a BLDC Motor

This BLDC driver was originally built around the dsPIC33FJ12MC201 breakout board designed as a [http://hades.mech.northwestern.edu/index.php/NU32:_Using_the_dsPIC33FJ12MC201_QEI_to_SPI_board|quadrature encoder decoder to SPI]. For this version the chip was upgraded to the dsPIC33FJ12MC202 which has more pins. The circuit uses the [http://www.intersil.com/en/products/power-management/mosfet-drivers/half--full-bridge-and-three-phase-drivers/HIP4086.html| HIP4086] 80V, 500mA, 3-Phase MOSFET Driver to drive 3 N-channel MOSFET H-bridges. The gate driver chip solves two issues with driving an N-channel MOSFET H-bridge using 3.3V logic level outputs. It amplifies the output voltage from 3.3V to 12V to fully saturate the gates of the MOSFETs. It also drives the High Side N-channel MOSFET gate to Vmot + 12V. To drive the MOSFETs the Gate-to-Source Voltage must be above the threshold voltage. This is easy on the low side MOSFETs because the source is tied to ground. For the high side MOSFET source is tied to the output voltage of the H-bridge. This means that in order to turn the high side MOSFET fully on it is necessary to pull the gate voltage level to Vmot + 12V, where Vmot is the motor drive voltage.

Driving a BLDC Motor

2013-09-11T16:37:02Z

AndrewGriesemer:

This BLDC driver was originally built around the dsPIC33FJ12MC201 breakout board designed as a [http://hades.mech.northwestern.edu/index.php/NU32:_Using_the_dsPIC33FJ12MC201_QEI_to_SPI_board|quadrature encoder decoder to SPI]. For this version the chip was upgraded to the dsPIC33FJ12MC202 which has more pins. The circuit uses the [http://www.intersil.com/en/products/power-management/mosfet-drivers/half--full-bridge-and-three-phase-drivers/HIP4086.html| HIP4086] 80V, 500mA, 3-Phase MOSFET Driver to drive 3 N-channel MOSFET H-bridges. The gate driver chip solves two issues with driving an N-channel MOSFET H-bridge using 3.3V logic level outputs. It amplifies the output voltage from 3.3V to 12V to fully saturate the gates of the MOSFETs. It also drives the High Side N-channel MOSFET gate to Vmot + 12V. To drive the MOSFETs the Gate-to-Source Voltage must be above the threshold voltage. This is easy on the low side MOSFETs because the source is tied to ground. For the high side MOSFET source is tied to the output voltage of the H-bridge. This means that in order to turn the high side MOSFET fully on it is necessary to pull the gate voltage level to Vmot + 12V, where Vmot is the motor drive voltage.

Driving a BLDC Motor

2013-09-11T16:36:54Z

AndrewGriesemer:

This BLDC driver was originally built around the dsPIC33FJ12MC201 breakout board designed as a [http://hades.mech.northwestern.edu/index.php/NU32:_Using_the_dsPIC33FJ12MC201_QEI_to_SPI_board|quadrature encoder decoder to SPI]. For this version the chip was upgraded to the dsPIC33FJ12MC202 which has more pins. The circuit uses the [http://www.intersil.com/en/products/power-management/mosfet-drivers/half--full-bridge-and-three-phase-drivers/HIP4086.html|HIP4086] 80V, 500mA, 3-Phase MOSFET Driver to drive 3 N-channel MOSFET H-bridges. The gate driver chip solves two issues with driving an N-channel MOSFET H-bridge using 3.3V logic level outputs. It amplifies the output voltage from 3.3V to 12V to fully saturate the gates of the MOSFETs. It also drives the High Side N-channel MOSFET gate to Vmot + 12V. To drive the MOSFETs the Gate-to-Source Voltage must be above the threshold voltage. This is easy on the low side MOSFETs because the source is tied to ground. For the high side MOSFET source is tied to the output voltage of the H-bridge. This means that in order to turn the high side MOSFET fully on it is necessary to pull the gate voltage level to Vmot + 12V, where Vmot is the motor drive voltage.

Driving a BLDC Motor

2013-09-11T16:36:36Z

AndrewGriesemer:

This BLDC driver was originally built around the dsPIC33FJ12MC201 breakout board designed as a [http://hades.mech.northwestern.edu/index.php/NU32:_Using_the_dsPIC33FJ12MC201_QEI_to_SPI_board|quadrature encoder decoder to SPI]. For this version the chip was upgraded to the dsPIC33FJ12MC202 which has more pins. The circuit uses the [http://www.intersil.com/en/products/power-management/mosfet-drivers/half--full-bridge-and-three-phase-drivers/HIP4086.html | HIP4086] 80V, 500mA, 3-Phase MOSFET Driver to drive 3 N-channel MOSFET H-bridges. The gate driver chip solves two issues with driving an N-channel MOSFET H-bridge using 3.3V logic level outputs. It amplifies the output voltage from 3.3V to 12V to fully saturate the gates of the MOSFETs. It also drives the High Side N-channel MOSFET gate to Vmot + 12V. To drive the MOSFETs the Gate-to-Source Voltage must be above the threshold voltage. This is easy on the low side MOSFETs because the source is tied to ground. For the high side MOSFET source is tied to the output voltage of the H-bridge. This means that in order to turn the high side MOSFET fully on it is necessary to pull the gate voltage level to Vmot + 12V, where Vmot is the motor drive voltage.

Driving a BLDC Motor

2013-09-11T16:36:04Z

AndrewGriesemer:

This BLDC driver was originally built around the dsPIC33FJ12MC201 breakout board designed as a [http://hades.mech.northwestern.edu/index.php/NU32:_Using_the_dsPIC33FJ12MC201_QEI_to_SPI_board|quadrature encoder decoder to SPI]. For this version the chip was upgraded to the dsPIC33FJ12MC202 which has more pins. The circuit uses the [http://www.intersil.com/en/products/power-management/mosfet-drivers/half--full-bridge-and-three-phase-drivers/HIP4086.html |HIP4086] 80V, 500mA, 3-Phase MOSFET Driver to drive 3 N-channel MOSFET H-bridges. The gate driver chip solves two issues with driving an N-channel MOSFET H-bridge using 3.3V logic level outputs. It amplifies the output voltage from 3.3V to 12V to fully saturate the gates of the MOSFETs. It also drives the High Side N-channel MOSFET gate to Vmot + 12V. To drive the MOSFETs the Gate-to-Source Voltage must be above the threshold voltage. This is easy on the low side MOSFETs because the source is tied to ground. For the high side MOSFET source is tied to the output voltage of the H-bridge. This means that in order to turn the high side MOSFET fully on it is necessary to pull the gate voltage level to Vmot + 12V, where Vmot is the motor drive voltage.

Driving a BLDC Motor with the dsPIC33FJ12MC201

2013-09-11T16:26:17Z

AndrewGriesemer: moved Driving a BLDC Motor with the dsPIC33FJ12MC201 to Driving a BLDC Motor with the dsPIC33FJ12MC202

#REDIRECT [[Driving a BLDC Motor with the dsPIC33FJ12MC202]]

Driving a BLDC Motor

2013-09-11T16:26:17Z

AndrewGriesemer: moved Driving a BLDC Motor with the dsPIC33FJ12MC201 to Driving a BLDC Motor with the dsPIC33FJ12MC202

Driving a BLDC Motor

2013-09-11T16:26:07Z

AndrewGriesemer:

Driving a BLDC Motor

2013-09-11T16:21:55Z

AndrewGriesemer: Created page with "The dsPIC33FH12MC201 is"

The dsPIC33FH12MC201 is

Brushless DC Motors

2013-09-11T16:21:00Z

AndrewGriesemer: /* Commutation Circuitry */

[[Category:Actuators]][[Category:Motors]]
===Overview===
Brushless DC (BLDC) motors are similar to [[Brushed DC Motor Theory|Brushed DC Motors]], except the commutation is done electronically, and the permanent magnets are on the rotor and the coils on the stator. Instead of using the brushes and the rotation of the commutator to power the coils, external circuitry is used. Brushless DC motors are generally more expensive and the extra effort to construct the circuitry must be considered. However, BLDCs can be more efficient under light loads, typically have better power-to-weight ratios and produce less wear on internal components. BLDCs are used in computer hard drives, CD/DVD players, and PC cooling fans and electric cars.

===Commutation Circuitry===
[[File:Mosfet_H-Bridge.png|200px|right|Mosfet H-Bridge Setup]]
Unlike a DC motor, which is automatically commutated by the rotation of its brushes, a brushless DC motor can only be commutated by changing the voltage level on each of its three inputs. During each phase of the commutation one input of the BLDC motor will be at the voltage supply level, one will be floating and one will be at ground. This can be accomplished using an H-bridge chip. For higher current applications the N-Channel MOSFET H-bridge configuration shown can be used.

Because the controller must change the voltage levels on the motor inputs, the controller needs a way of determining the motor's rotational position. A typical motor will include a Hall Effect sensor encoder or some other type of rotary encoder. More advanced drive systems will use the back EMF in the coils to determine the rotor position.

==Commutation Pattern==
[[File:Commutation.png|400px|right|Commutation Diagram for the Pittman 443S013]]
For a motor with a hall effect sensor encoder a typical commutation diagram is shown in the image to the right. The commutation diagram was taken from the [http://www.servo2go.com/support/downloads/4443S013.pdf| Pittman Motor 4443S013 Datasheet]. By reading the state of the three hall effect sensors the motor controller can set the state of the motor inputs.

==References==
*Wikipedia, "Brushless DC electric motor", http://en.wikipedia.org/wiki/Brushless_motors

Brushless DC Motors

2013-09-11T16:19:37Z

AndrewGriesemer: /* Commutation Pattern */

[[Category:Actuators]][[Category:Motors]]
===Overview===
Brushless DC (BLDC) motors are similar to [[Brushed DC Motor Theory|Brushed DC Motors]], except the commutation is done electronically, and the permanent magnets are on the rotor and the coils on the stator. Instead of using the brushes and the rotation of the commutator to power the coils, external circuitry is used. Brushless DC motors are generally more expensive and the extra effort to construct the circuitry must be considered. However, BLDCs can be more efficient under light loads, typically have better power-to-weight ratios and produce less wear on internal components. BLDCs are used in computer hard drives, CD/DVD players, and PC cooling fans and electric cars.

===Commutation Circuitry===
[[File:Mosfet_H-Bridge.png|200px|right|Mosfet H-Bridge Setup]]
Unlike a DC motor, which is automatically commutated by the rotation of its brushes, a brushless DC motor can only be commutated by changing the voltage level on each of its three inputs. During each phase of the commutation one input of the BLDC motor will be at the voltage supply level, one will be floating and one will be at ground. This can be accomplished using an H-bridge chip. For higher current applications the N-Channel MOSFET H-bridge configuration shown can be used. For more information on driving a BLDC motor with this setup consult ________________.

Because the controller must change the voltage levels on the motor inputs, the controller needs a way of determining the motor's rotational position. A typical motor will include a Hall Effect sensor encoder or some other type of rotary encoder. More advanced drive systems will use the back EMF in the coils to determine the rotor position.

==Commutation Pattern==
[[File:Commutation.png|400px|right|Commutation Diagram for the Pittman 443S013]]
For a motor with a hall effect sensor encoder a typical commutation diagram is shown in the image to the right. The commutation diagram was taken from the [http://www.servo2go.com/support/downloads/4443S013.pdf| Pittman Motor 4443S013 Datasheet]. By reading the state of the three hall effect sensors the motor controller can set the state of the motor inputs.

==References==
*Wikipedia, "Brushless DC electric motor", http://en.wikipedia.org/wiki/Brushless_motors

Brushless DC Motors

2013-09-11T16:07:46Z

AndrewGriesemer: /* Commutation Circuitry */

[[Category:Actuators]][[Category:Motors]]
===Overview===
Brushless DC (BLDC) motors are similar to [[Brushed DC Motor Theory|Brushed DC Motors]], except the commutation is done electronically, and the permanent magnets are on the rotor and the coils on the stator. Instead of using the brushes and the rotation of the commutator to power the coils, external circuitry is used. Brushless DC motors are generally more expensive and the extra effort to construct the circuitry must be considered. However, BLDCs can be more efficient under light loads, typically have better power-to-weight ratios and produce less wear on internal components. BLDCs are used in computer hard drives, CD/DVD players, and PC cooling fans and electric cars.

===Commutation Circuitry===
[[File:Mosfet_H-Bridge.png|200px|right|Mosfet H-Bridge Setup]]
Unlike a DC motor, which is automatically commutated by the rotation of its brushes, a brushless DC motor can only be commutated by changing the voltage level on each of its three inputs. During each phase of the commutation one input of the BLDC motor will be at the voltage supply level, one will be floating and one will be at ground. This can be accomplished using an H-bridge chip. For higher current applications the N-Channel MOSFET H-bridge configuration shown can be used. For more information on driving a BLDC motor with this setup consult ________________.

Because the controller must change the voltage levels on the motor inputs, the controller needs a way of determining the motor's rotational position. A typical motor will include a Hall Effect sensor encoder or some other type of rotary encoder. More advanced drive systems will use the back EMF in the coils to determine the rotor position.

==Commutation Pattern==
[[File:Commutation.png|400px|right|Commutation Diagram for the Pittman 443S013]]
For a motor with a hall effect sensor encoder a typical commutation diagram is shown in the image to the right. The commutation diagram was taken from the [http://www.servo2go.com/support/downloads/4443S013.pdf| Pittman Motor 4443S013 Datasheet]. Sample code for the dsPIC33 based on this commutation pattern is shown below.

==References==
*Wikipedia, "Brushless DC electric motor", http://en.wikipedia.org/wiki/Brushless_motors

Brushless DC Motors

2013-09-11T16:07:35Z

AndrewGriesemer: /* Commutation Circuitry */

[[Category:Actuators]][[Category:Motors]]
===Overview===
Brushless DC (BLDC) motors are similar to [[Brushed DC Motor Theory|Brushed DC Motors]], except the commutation is done electronically, and the permanent magnets are on the rotor and the coils on the stator. Instead of using the brushes and the rotation of the commutator to power the coils, external circuitry is used. Brushless DC motors are generally more expensive and the extra effort to construct the circuitry must be considered. However, BLDCs can be more efficient under light loads, typically have better power-to-weight ratios and produce less wear on internal components. BLDCs are used in computer hard drives, CD/DVD players, and PC cooling fans and electric cars.

===Commutation Circuitry===
[[File:Mosfet_H-Bridge.png|200px|right|Mosfet H-Bridge Setup]]
Unlike a DC motor, which is automatically commutated by the rotation of its brushes, a brushless DC motor can only be commutated by changing the voltage level on each of its three inputs. During each phase of the commutation one input of the BLDC motor will be at the voltage supply level, one will be floating and one will be at ground. This can be accomplished using an H-bridge chip. For higher current applications the N-Channel MOSFET H-bridge configuration shown can be used. For more information on driving a BLDC motor with this setup consult ________________.

Because the controller must change the voltage levels on the motor inputs, the controller needs a way of determining the motor's rotational position. A typical motor will include a Hall Effect sensor encoder or some other type of rotary encoder. More advanced drive systems will use the back EMF in the coils to determine the rotor position.

==Commutation Pattern==
[[File:Commutation.png|400px|right|Commutation Diagram for the Pittman 443S013]]
For a motor with a hall effect sensor encoder a typical commutation diagram is shown in the image to the right. The commutation diagram was taken from the [http://www.servo2go.com/support/downloads/4443S013.pdf| Pittman Motor 4443S013 Datasheet]. Sample code for the dsPIC33 based on this commutation pattern is shown below.

==References==
*Wikipedia, "Brushless DC electric motor", http://en.wikipedia.org/wiki/Brushless_motors

Brushless DC Motors

2013-09-11T16:07:18Z

AndrewGriesemer: /* Commutation Circuitry */

[[Category:Actuators]][[Category:Motors]]
===Overview===
Brushless DC (BLDC) motors are similar to [[Brushed DC Motor Theory|Brushed DC Motors]], except the commutation is done electronically, and the permanent magnets are on the rotor and the coils on the stator. Instead of using the brushes and the rotation of the commutator to power the coils, external circuitry is used. Brushless DC motors are generally more expensive and the extra effort to construct the circuitry must be considered. However, BLDCs can be more efficient under light loads, typically have better power-to-weight ratios and produce less wear on internal components. BLDCs are used in computer hard drives, CD/DVD players, and PC cooling fans and electric cars.

===Commutation Circuitry===
[[File:Mosfet_H-Bridge.png|200px|left|Mosfet H-Bridge Setup]]
Unlike a DC motor, which is automatically commutated by the rotation of its brushes, a brushless DC motor can only be commutated by changing the voltage level on each of its three inputs. During each phase of the commutation one input of the BLDC motor will be at the voltage supply level, one will be floating and one will be at ground. This can be accomplished using an H-bridge chip. For higher current applications the N-Channel MOSFET H-bridge configuration shown can be used. For more information on driving a BLDC motor with this setup consult ________________.

Because the controller must change the voltage levels on the motor inputs, the controller needs a way of determining the motor's rotational position. A typical motor will include a Hall Effect sensor encoder or some other type of rotary encoder. More advanced drive systems will use the back EMF in the coils to determine the rotor position.

==Commutation Pattern==
[[File:Commutation.png|400px|right|Commutation Diagram for the Pittman 443S013]]
For a motor with a hall effect sensor encoder a typical commutation diagram is shown in the image to the right. The commutation diagram was taken from the [http://www.servo2go.com/support/downloads/4443S013.pdf| Pittman Motor 4443S013 Datasheet]. Sample code for the dsPIC33 based on this commutation pattern is shown below.

==References==
*Wikipedia, "Brushless DC electric motor", http://en.wikipedia.org/wiki/Brushless_motors

Brushless DC Motors

2013-09-11T16:07:08Z

AndrewGriesemer: /* Commutation Circuitry */

[[Category:Actuators]][[Category:Motors]]
===Overview===
Brushless DC (BLDC) motors are similar to [[Brushed DC Motor Theory|Brushed DC Motors]], except the commutation is done electronically, and the permanent magnets are on the rotor and the coils on the stator. Instead of using the brushes and the rotation of the commutator to power the coils, external circuitry is used. Brushless DC motors are generally more expensive and the extra effort to construct the circuitry must be considered. However, BLDCs can be more efficient under light loads, typically have better power-to-weight ratios and produce less wear on internal components. BLDCs are used in computer hard drives, CD/DVD players, and PC cooling fans and electric cars.

===Commutation Circuitry===
[[File:Mosfet_H-Bridge.png|200px|left|Mosfet H-Bridge Setup]]
Unlike a DC motor, which is automatically commutated by the rotation of its brushes, a brushless DC motor can only be commutated by changing the voltage level on each of its three inputs. During each phase of the commutation one input of the BLDC motor will be at the voltage supply level, one will be floating and one will be at ground. This can be accomplished using an H-bridge chip. For higher current applications the N-Channel MOSFET H-bridge configuration shown can be used. For more information on driving a BLDC motor with this setup consult the ________________ page.

Because the controller must change the voltage levels on the motor inputs, the controller needs a way of determining the motor's rotational position. A typical motor will include a Hall Effect sensor encoder or some other type of rotary encoder. More advanced drive systems will use the back EMF in the coils to determine the rotor position.

==Commutation Pattern==
[[File:Commutation.png|400px|right|Commutation Diagram for the Pittman 443S013]]
For a motor with a hall effect sensor encoder a typical commutation diagram is shown in the image to the right. The commutation diagram was taken from the [http://www.servo2go.com/support/downloads/4443S013.pdf| Pittman Motor 4443S013 Datasheet]. Sample code for the dsPIC33 based on this commutation pattern is shown below.

==References==
*Wikipedia, "Brushless DC electric motor", http://en.wikipedia.org/wiki/Brushless_motors

File:Mosfet H-Bridge.png

2013-09-11T16:03:42Z

AndrewGriesemer: uploaded a new version of "File:Mosfet H-Bridge.png"

Brushless DC Motors

2013-09-11T16:01:01Z

AndrewGriesemer: /* Commutation Circuitry */

[[Category:Actuators]][[Category:Motors]]
===Overview===
Brushless DC (BLDC) motors are similar to [[Brushed DC Motor Theory|Brushed DC Motors]], except the commutation is done electronically, and the permanent magnets are on the rotor and the coils on the stator. Instead of using the brushes and the rotation of the commutator to power the coils, external circuitry is used. Brushless DC motors are generally more expensive and the extra effort to construct the circuitry must be considered. However, BLDCs can be more efficient under light loads, typically have better power-to-weight ratios and produce less wear on internal components. BLDCs are used in computer hard drives, CD/DVD players, and PC cooling fans and electric cars.

===Commutation Circuitry===
[[File:Mosfet_H-Bridge.png|200px|left|Mosfet H-Bridge Setup]]
Unlike a DC motor, which is automatically commutated by the rotation of its brushes, a brushless DC motor can only be commutated by changing the voltage level on each of its three inputs. During each phase of the commutation one input of the BLDC motor will be at the voltage supply level, one will be floating and one will be at ground. This can be accomplished using an H-bridge configuration.

Because the controller must change the voltage levels on the motor inputs, the controller needs a way of determining the motor's rotational position. A typical motor will include a Hall Effect sensor encoder or some other type of rotary encoder. More advanced drive systems will use the back EMF in the coils to determine the rotor position.

==Commutation Pattern==
[[File:Commutation.png|400px|right|Commutation Diagram for the Pittman 443S013]]
For a motor with a hall effect sensor encoder a typical commutation diagram is shown in the image to the right. The commutation diagram was taken from the [http://www.servo2go.com/support/downloads/4443S013.pdf| Pittman Motor 4443S013 Datasheet]. Sample code for the dsPIC33 based on this commutation pattern is shown below.

==References==
*Wikipedia, "Brushless DC electric motor", http://en.wikipedia.org/wiki/Brushless_motors

Brushless DC Motors

2013-09-11T16:00:50Z

AndrewGriesemer: /* Commutation Pattern */

[[Category:Actuators]][[Category:Motors]]
===Overview===
Brushless DC (BLDC) motors are similar to [[Brushed DC Motor Theory|Brushed DC Motors]], except the commutation is done electronically, and the permanent magnets are on the rotor and the coils on the stator. Instead of using the brushes and the rotation of the commutator to power the coils, external circuitry is used. Brushless DC motors are generally more expensive and the extra effort to construct the circuitry must be considered. However, BLDCs can be more efficient under light loads, typically have better power-to-weight ratios and produce less wear on internal components. BLDCs are used in computer hard drives, CD/DVD players, and PC cooling fans and electric cars.

===Commutation Circuitry===
Unlike a DC motor, which is automatically commutated by the rotation of its brushes, a brushless DC motor can only be commutated by changing the voltage level on each of its three inputs. During each phase of the commutation one input of the BLDC motor will be at the voltage supply level, one will be floating and one will be at ground. This can be accomplished using an H-bridge configuration.

[[File:Mosfet_H-Bridge.png|200px|left|Mosfet H-Bridge Setup]]

Because the controller must change the voltage levels on the motor inputs, the controller needs a way of determining the motor's rotational position. A typical motor will include a Hall Effect sensor encoder or some other type of rotary encoder. More advanced drive systems will use the back EMF in the coils to determine the rotor position.

==Commutation Pattern==
[[File:Commutation.png|400px|right|Commutation Diagram for the Pittman 443S013]]
For a motor with a hall effect sensor encoder a typical commutation diagram is shown in the image to the right. The commutation diagram was taken from the [http://www.servo2go.com/support/downloads/4443S013.pdf| Pittman Motor 4443S013 Datasheet]. Sample code for the dsPIC33 based on this commutation pattern is shown below.

==References==
*Wikipedia, "Brushless DC electric motor", http://en.wikipedia.org/wiki/Brushless_motors

Brushless DC Motors

2013-09-11T16:00:43Z

AndrewGriesemer: /* Commutation Pattern */

[[Category:Actuators]][[Category:Motors]]
===Overview===
Brushless DC (BLDC) motors are similar to [[Brushed DC Motor Theory|Brushed DC Motors]], except the commutation is done electronically, and the permanent magnets are on the rotor and the coils on the stator. Instead of using the brushes and the rotation of the commutator to power the coils, external circuitry is used. Brushless DC motors are generally more expensive and the extra effort to construct the circuitry must be considered. However, BLDCs can be more efficient under light loads, typically have better power-to-weight ratios and produce less wear on internal components. BLDCs are used in computer hard drives, CD/DVD players, and PC cooling fans and electric cars.

===Commutation Circuitry===
Unlike a DC motor, which is automatically commutated by the rotation of its brushes, a brushless DC motor can only be commutated by changing the voltage level on each of its three inputs. During each phase of the commutation one input of the BLDC motor will be at the voltage supply level, one will be floating and one will be at ground. This can be accomplished using an H-bridge configuration.

[[File:Mosfet_H-Bridge.png|200px|left|Mosfet H-Bridge Setup]]

Because the controller must change the voltage levels on the motor inputs, the controller needs a way of determining the motor's rotational position. A typical motor will include a Hall Effect sensor encoder or some other type of rotary encoder. More advanced drive systems will use the back EMF in the coils to determine the rotor position.

==Commutation Pattern==
[[File:Commutation.png|400px|right|Commutation Diagram for the Pittman 443S013]]
For a motor with a hall effect sensor encoder a typical commutation diagram is shown in the image to the right. The commutation diagram was taken from the [http://www.servo2go.com/support/downloads/4443S013.pdf| Pittman Motor 4443S013 Datasheet]. Sample code for the dsPIC33 based on this commutation pattern is shown below.
[[File:Commutation.png|400px|right|Commutation Diagram for the Pittman 443S013]]

==References==
*Wikipedia, "Brushless DC electric motor", http://en.wikipedia.org/wiki/Brushless_motors

Brushless DC Motors

2013-09-11T16:00:27Z

AndrewGriesemer: /* Commutation Circuitry */

[[Category:Actuators]][[Category:Motors]]
===Overview===
Brushless DC (BLDC) motors are similar to [[Brushed DC Motor Theory|Brushed DC Motors]], except the commutation is done electronically, and the permanent magnets are on the rotor and the coils on the stator. Instead of using the brushes and the rotation of the commutator to power the coils, external circuitry is used. Brushless DC motors are generally more expensive and the extra effort to construct the circuitry must be considered. However, BLDCs can be more efficient under light loads, typically have better power-to-weight ratios and produce less wear on internal components. BLDCs are used in computer hard drives, CD/DVD players, and PC cooling fans and electric cars.

===Commutation Circuitry===
Unlike a DC motor, which is automatically commutated by the rotation of its brushes, a brushless DC motor can only be commutated by changing the voltage level on each of its three inputs. During each phase of the commutation one input of the BLDC motor will be at the voltage supply level, one will be floating and one will be at ground. This can be accomplished using an H-bridge configuration.

[[File:Mosfet_H-Bridge.png|200px|left|Mosfet H-Bridge Setup]]

Because the controller must change the voltage levels on the motor inputs, the controller needs a way of determining the motor's rotational position. A typical motor will include a Hall Effect sensor encoder or some other type of rotary encoder. More advanced drive systems will use the back EMF in the coils to determine the rotor position.

==Commutation Pattern==
For a motor with a hall effect sensor encoder a typical commutation diagram is shown in the image to the right. The commutation diagram was taken from the [http://www.servo2go.com/support/downloads/4443S013.pdf| Pittman Motor 4443S013 Datasheet]. Sample code for the dsPIC33 based on this commutation pattern is shown below.
[[File:Commutation.png|400px|right|Commutation Diagram for the Pittman 443S013]]

==References==
*Wikipedia, "Brushless DC electric motor", http://en.wikipedia.org/wiki/Brushless_motors

Brushless DC Motors

2013-09-11T16:00:15Z

AndrewGriesemer: /* Commutation Circuitry */

[[Category:Actuators]][[Category:Motors]]
===Overview===
Brushless DC (BLDC) motors are similar to [[Brushed DC Motor Theory|Brushed DC Motors]], except the commutation is done electronically, and the permanent magnets are on the rotor and the coils on the stator. Instead of using the brushes and the rotation of the commutator to power the coils, external circuitry is used. Brushless DC motors are generally more expensive and the extra effort to construct the circuitry must be considered. However, BLDCs can be more efficient under light loads, typically have better power-to-weight ratios and produce less wear on internal components. BLDCs are used in computer hard drives, CD/DVD players, and PC cooling fans and electric cars.

===Commutation Circuitry===
Unlike a DC motor, which is automatically commutated by the rotation of its brushes, a brushless DC motor can only be commutated by changing the voltage level on each of its three inputs. During each phase of the commutation one input of the BLDC motor will be at the voltage supply level, one will be floating and one will be at ground. This can be accomplished using an H-bridge configuration.

[[File:Mosfet_H-Bridge.png|200px|right|Mosfet H-Bridge Setup]]

Because the controller must change the voltage levels on the motor inputs, the controller needs a way of determining the motor's rotational position. A typical motor will include a Hall Effect sensor encoder or some other type of rotary encoder. More advanced drive systems will use the back EMF in the coils to determine the rotor position.

==Commutation Pattern==
For a motor with a hall effect sensor encoder a typical commutation diagram is shown in the image to the right. The commutation diagram was taken from the [http://www.servo2go.com/support/downloads/4443S013.pdf| Pittman Motor 4443S013 Datasheet]. Sample code for the dsPIC33 based on this commutation pattern is shown below.
[[File:Commutation.png|400px|right|Commutation Diagram for the Pittman 443S013]]

==References==
*Wikipedia, "Brushless DC electric motor", http://en.wikipedia.org/wiki/Brushless_motors

Brushless DC Motors

2013-09-11T15:59:44Z

AndrewGriesemer: /* Commutation Circuitry */

[[Category:Actuators]][[Category:Motors]]
===Overview===
Brushless DC (BLDC) motors are similar to [[Brushed DC Motor Theory|Brushed DC Motors]], except the commutation is done electronically, and the permanent magnets are on the rotor and the coils on the stator. Instead of using the brushes and the rotation of the commutator to power the coils, external circuitry is used. Brushless DC motors are generally more expensive and the extra effort to construct the circuitry must be considered. However, BLDCs can be more efficient under light loads, typically have better power-to-weight ratios and produce less wear on internal components. BLDCs are used in computer hard drives, CD/DVD players, and PC cooling fans and electric cars.

===Commutation Circuitry===
Unlike a DC motor, which is automatically commutated by the rotation of its brushes, a brushless DC motor can only be commutated by changing the voltage level on each of its three inputs. During each phase of the commutation one input of the BLDC motor will be at the voltage supply level, one will be floating and one will be at ground. This can be accomplished using an H-bridge configuration.

[[File:Mosfet_H-Bridge.png|400px|right|Mosfet H-Bridge Setup]]

Because the controller must change the voltage levels on the motor inputs, the controller needs a way of determining the motor's rotational position. A typical motor will include a Hall Effect sensor encoder or some other type of rotary encoder. More advanced drive systems will use the back EMF in the coils to determine the rotor position.

==Commutation Pattern==
For a motor with a hall effect sensor encoder a typical commutation diagram is shown in the image to the right. The commutation diagram was taken from the [http://www.servo2go.com/support/downloads/4443S013.pdf| Pittman Motor 4443S013 Datasheet]. Sample code for the dsPIC33 based on this commutation pattern is shown below.
[[File:Commutation.png|400px|right|Commutation Diagram for the Pittman 443S013]]

==References==
*Wikipedia, "Brushless DC electric motor", http://en.wikipedia.org/wiki/Brushless_motors

Brushless DC Motors

2013-09-11T15:59:27Z

AndrewGriesemer: /* Commutation Circuitry */

[[Category:Actuators]][[Category:Motors]]
===Overview===
Brushless DC (BLDC) motors are similar to [[Brushed DC Motor Theory|Brushed DC Motors]], except the commutation is done electronically, and the permanent magnets are on the rotor and the coils on the stator. Instead of using the brushes and the rotation of the commutator to power the coils, external circuitry is used. Brushless DC motors are generally more expensive and the extra effort to construct the circuitry must be considered. However, BLDCs can be more efficient under light loads, typically have better power-to-weight ratios and produce less wear on internal components. BLDCs are used in computer hard drives, CD/DVD players, and PC cooling fans and electric cars.

===Commutation Circuitry===
Unlike a DC motor, which is automatically commutated by the rotation of its brushes, a brushless DC motor can only be commutated by changing the voltage level on each of its three inputs. During each phase of the commutation one input of the BLDC motor will be at the voltage supply level, one will be floating and one will be at ground. This can be accomplished using an H-bridge configuration.

[[Mosfet_H-Bridge.png|400px|right|Mosfet H-Bridge Setup]]

Because the controller must change the voltage levels on the motor inputs, the controller needs a way of determining the motor's rotational position. A typical motor will include a Hall Effect sensor encoder or some other type of rotary encoder. More advanced drive systems will use the back EMF in the coils to determine the rotor position.

==Commutation Pattern==
For a motor with a hall effect sensor encoder a typical commutation diagram is shown in the image to the right. The commutation diagram was taken from the [http://www.servo2go.com/support/downloads/4443S013.pdf| Pittman Motor 4443S013 Datasheet]. Sample code for the dsPIC33 based on this commutation pattern is shown below.
[[File:Commutation.png|400px|right|Commutation Diagram for the Pittman 443S013]]

==References==
*Wikipedia, "Brushless DC electric motor", http://en.wikipedia.org/wiki/Brushless_motors

File:Mosfet H-Bridge.png

2013-09-11T15:56:19Z

AndrewGriesemer:

Brushless DC Motors

2013-09-11T15:56:01Z

AndrewGriesemer: /* Commutation Circuitry */

[[Category:Actuators]][[Category:Motors]]
===Overview===
Brushless DC (BLDC) motors are similar to [[Brushed DC Motor Theory|Brushed DC Motors]], except the commutation is done electronically, and the permanent magnets are on the rotor and the coils on the stator. Instead of using the brushes and the rotation of the commutator to power the coils, external circuitry is used. Brushless DC motors are generally more expensive and the extra effort to construct the circuitry must be considered. However, BLDCs can be more efficient under light loads, typically have better power-to-weight ratios and produce less wear on internal components. BLDCs are used in computer hard drives, CD/DVD players, and PC cooling fans and electric cars.

===Commutation Circuitry===
Unlike a DC motor, which is automatically commutated by the rotation of its brushes, a brushless DC motor can only be commutated by changing the voltage level on each of its three inputs. To accomplish

Because the controller must change the voltage levels on the motor inputs, the controller needs a way of determining the motor's rotational position. A typical motor will include a Hall Effect sensor encoder or some other type of rotary encoder. More advanced drive systems will use the back EMF in the coils to determine the rotor position.

==Commutation Pattern==
For a motor with a hall effect sensor encoder a typical commutation diagram is shown in the image to the right. The commutation diagram was taken from the [http://www.servo2go.com/support/downloads/4443S013.pdf| Pittman Motor 4443S013 Datasheet]. Sample code for the dsPIC33 based on this commutation pattern is shown below.
[[File:Commutation.png|400px|right|Commutation Diagram for the Pittman 443S013]]

==References==
*Wikipedia, "Brushless DC electric motor", http://en.wikipedia.org/wiki/Brushless_motors

Brushless DC Motors

2013-09-11T15:46:05Z

AndrewGriesemer: /* Commutation Circuitry */

Brushless DC Motors

2013-09-11T15:42:05Z

AndrewGriesemer: /* Commutation Circuitry */

Brushless DC Motors

2013-09-11T15:41:53Z

AndrewGriesemer: /* Commutation Circuitry */

Brushless DC Motors

2013-09-11T15:41:25Z

AndrewGriesemer: /* Commutation Circuitry */

Brushless DC Motors

2013-09-11T15:38:55Z

AndrewGriesemer: /* Commutation Circuitry */

Brushless DC Motors

2013-09-11T15:37:51Z

AndrewGriesemer: /* Commutation Circuitry */

Brushless DC Motors

2013-09-11T15:37:22Z

AndrewGriesemer: /* Commutation Circuitry */

File:Commutation.png

2013-09-11T15:36:04Z

AndrewGriesemer:

Brushless DC Motors

2013-09-11T15:35:04Z

AndrewGriesemer: /* Commutation Circuitry */

Brushless DC Motors

2013-09-11T15:34:04Z

AndrewGriesemer: /* Commutation Circuitry */

Brushless DC Motors

2013-09-11T15:24:56Z

AndrewGriesemer: /* Overview */

Driving the HIP4086

2013-07-22T15:32:16Z

AndrewGriesemer: /* Introduction */

==Introduction==
Intersil's [http://www.intersil.com/content/dam/Intersil/documents/fn42/fn4220.pdf HIP4086] is an 80V, 500mA, 3-phase MOSFET Gate Driver. This package enables a microcontroller with 3.3V, logic level outputs to control a set of 6 N-channel MOSFETS to drive a 3-phase Brushless DC Motor.

==

Driving the HIP4086

2013-07-22T15:31:13Z

AndrewGriesemer: Created page with "==Introduction== Intersil's HIP4086 is an 80V, 500mA, 3-phase MOSFET Gate Driver. This package enables a microcontroller with 3.3V, logic level outputs to control a set of 6 N..."

==Introduction==
Intersil's HIP4086 is an 80V, 500mA, 3-phase MOSFET Gate Driver. This package enables a microcontroller with 3.3V, logic level outputs to control a set of 6 N-channel MOSFETS to drive a 3-phase Brushless DC Motor.