Weiss, Gerald Department of Electrical Engineering, Polytechnic Institute of New York, Brooklyn, New York.
Last reviewed:January 2020
- Servo Loops
- Positional servomechanism
- Velocity servomechanism
- Digital servomechanism
- Stepping servomechanism
- Alternating-current servomechanism
- Hydraulic and pneumatic servomechanisms
- Direct current servomotor
- Alternating current servomotor
- Unconventional motors
- Measuring Devices (Sensors)
- Analog transducers
- Optical encoders
- Compensation (Control Algorithm)
- Related Primary Literature
- Additional Reading
A system for the automatic control of motion by means of feedback. The term servomechanism, or servo for short, is sometimes used interchangeably with feedback control system (servosystem). In a narrower sense, servomechanism refers to the feedback control of a single variable (feedback loop or servo loop). In the strictest sense, followed in this article, the term servomechanism is restricted to a feedback loop in which the controlled quantity or output is mechanical position or one of its derivatives (velocity and acceleration). See also: Control systems
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