Drive including PID position feedback drive and control system fed by speed control unit and X-ray device comprising such a drive

摘要

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 (xa) and the nominal (xs) position. A series of nominal positions (xs) is determined from a nominal speed (v) in a speed control unit (5). The successive nominal positions (xs(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.