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Servo
Controllers:
Shelquist
Engineering:
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FAQ
System Overview
1) What is a basic system block diagram?
The servo controller provides the PID control
loop that positions a DC motor according to a commanded position. The position
commands may be serial DMX512 data, R/C pulse width commands, or an analog
voltage. The entire system is typically powered by 12 or 24 vdc power supply or
battery.

2) Can a commercially available servo actuator be used?
Yes, servo actuators are available from companies such as
CK Design Technology,
UltraMotion,
E Drive Design,
Warner Electric,
Duff-Norton and
Thomson Industries contain both
the DC Motor and the Position Feedback Potentiometer that were shown in the
preceding block diagram. Using a servo actuator, the block diagram looks like
this:

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