Difference between revisions of "RC Servo Theory"
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[[Category:Actuators]] |
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The control signal for an RC Servo is a digital pulse train that looks something like this: |
The control signal for an RC Servo is a digital pulse train that looks something like this: |
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Here, the width of the “high” pulse, t, determines the angle of the rotor. The width, measured in time, will be in the range of |
Here, the width of the “high” pulse, t, determines the angle of the rotor. The width, measured in time, will be in the range of |
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0. |
<math>0.3 ms \leq t \leq 2.5 ms</math> |
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And the frequency of the pulses, given by |
And the frequency of the pulses, given by |
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<math>f = \frac{1}{T}</math>, |
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is around 40-50Hz (T ≈ 20ms). |
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For a practical circuit, see [[555 Servo Circuit]]. |
For a practical circuit, see [[555 Servo Circuit]]. |
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Latest revision as of 14:36, 9 June 2006
The control signal for an RC Servo is a digital pulse train that looks something like this:
Here, the width of the “high” pulse, t, determines the angle of the rotor. The width, measured in time, will be in the range of
And the frequency of the pulses, given by
,
is around 40-50Hz (T ≈ 20ms).
For a practical circuit, see 555 Servo Circuit.
