Controller for a lockable servo motor

Details Controller for a lockable servo motor Controller for a lockable servo motor

1981-11-16

1983-10-04

Dobeck, B.

Electricity: motive power systems

Positional servo systems

'reset' systems

364162, G05B 1142

Patent

active

044081480

ABSTRACT:
The PI controller for a blockable servo motor comprises a selector having a first, normal operating position in which a difference signal is fed to the I network. In the other position, the output of a subtraction member is fed to the I network. The inputs of the subtraction member receive the input and output of the servo motor. The selector is actuated by means of a comparator which also blocks the servo motor when the difference signal is of small absolute value. In this way, the servo motor is not operated as frequently and yet this does not appreciably impair the control accuracy.

REFERENCES:
patent: 3946297 (1976-03-01), Bechtel
patent: 4049971 (1977-09-01), de Vivy
patent: 4275439 (1981-06-01), Kuwata
patent: 4303873 (1981-12-01), Hawkins
patent: 4346433 (1982-08-01), Rutledge

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