Spindle orientation control apparatus

Details Spindle orientation control apparatus Spindle orientation control apparatus

1981-02-20

1982-08-31

Dobeck, B.

Electricity: motive power systems

Positional servo systems

Digital or numerical systems

318594, 318603, G05B 1928

Patent

active

043474705

ABSTRACT:
A spindle orientation control apparatus having a motor for driving a spindle, speed control means for rotating the spindle at a speed in accordance with a command speed, and position control means for stopping the spindle at a commanded stopping position. The apparatus is further provided with stopping position command means for digitally instructing the spindle stopping position, a position sensor, error monitoring means for monitoring an error between the commanded stopping position and the actual rotational position of the spindle and for generating a signal when the error attains a predetermined value, and means for generating a signal indicative of an orientation speed. When the apparatus is in a spindle orientation control mode, the spindle is speed-controlled so as to rotate at the orientation speed until the error monitoring means generates said signal, and is position-controlled after the generation of the signal so as to reduce the error to zero.

REFERENCES:
patent: 3700993 (1972-10-01), Fischer
patent: 4023084 (1977-05-01), Owa
patent: 4101817 (1978-07-01), Maeda et al.

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