Difference between revisions of "RC Servo Theory"

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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


<math>0.3ms \leq t \leq 2.5ms</math>
0.3ms ≤ t ≤ 2.5ms
0.3ms ≤ t ≤ 2.5ms



Revision as of 10:53, 27 May 2006

The control signal for an RC Servo is a digital pulse train that looks something like this:

555 control.jpg

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

0.3ms ≤ t ≤ 2.5ms

And the frequency of the pulses, given by f=1/T, is around 40-50Hz (T ≈ 20ms).

For a practical circuit, see 555 Servo Circuit.