Drive including PID position feedback drive and control system f

Details Drive including PID position feedback drive and control system f Drive including PID position feedback drive and control system f

1995-08-30

1998-01-20

Wysocki, Jonathan

Electricity: motive power systems

Positional servo systems

'reset' systems

318653, H02B 700

Patent

active

057104964

ABSTRACT:
A motor drive having a very large dynamic speed range comprises a PID position feedback control system (8) in which the motor position is readjusted on the basis of the difference between the instantaneous (x.sub.a) and the nominal (x.sub.s) position. A series of nominal positions (x.sub.s) is determined from a nominal speed (v) in a speed control unit (5). The successive nominal positions (x.sub.s (t)) in a series exhibit a constant difference (.DELTA.x) relative to one another and are presented to the PID position feedback control system (8) with fixed intervals (.DELTA.t). A drive of this kind is used, for example in the beam collimator of an X-ray device.

REFERENCES:
patent: 4639884 (1987-01-01), Sagues
patent: 4642542 (1987-02-01), McKeand
patent: 4716535 (1987-12-01), Yoshida et al.
patent: 4999557 (1991-03-01), Inoue
patent: 5059880 (1991-10-01), Hiroi
patent: 5130710 (1992-07-01), Salazar
patent: 5237521 (1993-08-01), Raj et al.
patent: 5248921 (1993-09-01), Kato et al.
patent: 5287396 (1994-02-01), Stegehuis

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