Servo system

Details Servo system Servo system

1988-02-26

1989-10-31

Shoop, Jr., William M.

Electricity: motive power systems

Positional servo systems

With stabilizing features

318632, G05B 602

Patent

active

048780057

ABSTRACT:
A servo system having an improved loop stability and response time. A phase shifting circuit is inserted in the feedback loop providing an open loop phase lag characteristic at a resonance frequency of a load system in a range of -270.degree. to -360.degree.. The transfer function of the phase shifting circuit is preferably of the form: ##EQU1## where .tau..sub.3 and .tau..sub.4 represent time constants of the circuit.

REFERENCES:
patent: 4071209 (1978-01-01), Hart
Handbook of Operational Amplifier Circuit Design, pp. 26-4 and 26-5, McGraw-Hill Book Company, 1976.

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