Servo loop control system with dynamic limiting

Details Servo loop control system with dynamic limiting Servo loop control system with dynamic limiting

1986-08-27

1989-01-31

Shoop, Jr., William M.

Electricity: motive power systems

Positional servo systems

Limit or end-stop control

91506, 60911, 318311, G05G 500

Patent

active

048018570

ABSTRACT:
A servo system having a circuit for developing an error signal representing the deviation of a load condition from a desired condition represented by a command signal and forward and feedback paths at least one of which includes an impedance therein represented by a transfer function comprises a limiter receiving the command signal and connected to the error signal developing circuit for controllably limiting the command signal wherein the limiter has a variable saturation point and a circuit coupled to the limiter and to the impedance for controlling the saturation point of the limiter in accordance with the transfer function of the impedance to enable fast response without damage to an output device controlled by the servo system.

REFERENCES:
patent: 3437836 (1969-04-01), Hull
patent: 3514635 (1970-05-01), Gilbert
patent: 3697780 (1972-10-01), Michael et al.
patent: 3916330 (1975-10-01), Weissman
patent: 3999084 (1976-12-01), Beaudette
patent: 4095126 (1978-06-01), Hoffman et al.
patent: 4487109 (1984-12-01), Burandt et al.

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