RC Servo Theory: Difference between revisions

Content deleted Content added

Inline

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

$0.3 m s \leq t \leq 2.5 m s$

And the frequency of the pulses, given by

$f = \frac{1}{T}$ ,

is around 40-50Hz (T ≈ 20ms).

For a practical circuit, see 555 Servo Circuit.

@@ Line 5: / Line 5: @@
 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
-.3ms ≤ t ≤ 2.5ms
 <math>0.3 ms \leq t \leq 2.5 ms</math>
-And the frequency of the pulses, given by f=1/T, is around 40-50Hz (T ≈ 20ms).
+And the frequency of the pulses, given by
+<math>f = \frac{1}{T}</math>,
+is around 40-50Hz (T ≈ 20ms).
 For a practical circuit, see [[555 Servo Circuit]].