Automatic drift compensation method and device for position-loop

Details Automatic drift compensation method and device for position-loop Automatic drift compensation method and device for position-loop

1990-03-22

1992-05-19

Ip, Paul

Electricity: motive power systems

Positional servo systems

With stabilizing features

318616, 318610, 318569, G05B 501

Patent

active

051151804

ABSTRACT:
By means of a timer and by setting the compensation for the lag error, the correctness of automatic drift compensation in a position-loop controller is enhanced and the accuracy of position control is also improved. In the present invention, a method and a device for automatic drift compensation in a position-loop controller are disclosed which enable accurate displacement control so as to avoid inadvertent shutdowns of the system.

REFERENCES:
patent: 3633086 (1972-01-01), Speth
patent: 3917930 (1975-11-01), Davey et al.
patent: 4156169 (1979-05-01), Imamura
patent: 4160200 (1979-07-01), Imamura et al.
patent: 4485338 (1984-11-01), Matsuura et al.
patent: 4890046 (1989-12-01), Kurakake et al.
Chapter 6-3 of Computer Control of Manufacturing Systems, published by McGraw-Hill, Inc., 1983.

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