Servo circuit

Details Servo circuit Servo circuit

1990-01-03

1993-03-16

Shoop, Jr., William M.

Electricity: motive power systems

Positional servo systems

Adaptive or optimizing systems including 'bang-bang' servos

318594, 318592, 360 75, G05B 1300

Patent

active

051947889

ABSTRACT:
A servo circuit having a speed detection circuit for detecting a real speed from a position signal from an object under servo control. A speed error detection circuit generates an error between a target speed and the real speed. A position error detection circuit generates a position error signal from the position signal. A switching unit switches connection of the servo object to the speed error detection circuit and the position error detection circuit. A main processing unit controls the switching of the switching unit. Near the target position, speed control by the speed error detection circuit is switched to position control by the position error detection circuit. A speed detection gain adjustment unit is provided in the speed detection circuit. The main processing unit measures the intervals between the position signals and, based on the measured value, changes the detection gain of the speed detection gain adjustment unit.

REFERENCES:
patent: 4096425 (1978-06-01), Brown et al.
patent: 4184108 (1980-01-01), Sordello et al.
patent: 4237502 (1980-12-01), Erickson et al.
patent: 4288731 (1981-09-01), Lee et al.
patent: 4578723 (1986-03-01), Betts et al.
patent: 4609855 (1986-08-01), Andrews et al.
patent: 4636883 (1987-01-01), Hashimoto
patent: 4697127 (1987-09-01), Stich et al.
patent: 4710865 (1987-12-01), Higomura
patent: 4724369 (1988-02-01), Hashimoto
patent: 4988933 (1991-07-01), Ogawa

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