Apparatus for effectively handling a saturation condition in a d

Details Apparatus for effectively handling a saturation condition in a d Apparatus for effectively handling a saturation condition in a d

1995-07-10

1997-03-25

Sircus, Brian

Electricity: motive power systems

Positional servo systems

'reset' systems

318610, 364153, 364161, G05B 1142

Patent

active

056148011

ABSTRACT:
An improved method and apparatus for handling saturation conditions in the digital compensator of a control system. A clipping limiter is incorporated in the digital compensator for outputting both a limited signal to be sent to the actuator, and for outputting a clipping signal indicative of a difference between the input and the output of the clipping limiter. The clipping signal is delayed by one sample period, and fed back to the input to the compensator in order to provide a correct amount of compensation when the system is operating at or near saturation.

REFERENCES:
patent: 4492907 (1985-01-01), Fabian et al.
patent: 4801857 (1989-01-01), Bundy
patent: 5384526 (1995-01-01), Bennett
patent: 5497063 (1996-03-01), Day et al.

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