CONTROLLER FOR SYNCHRONOUS MOTOR
Document Type and Number:
Japanese Patent JP3659827
PROBLEM TO BE SOLVED: To provide a stabilized controller in a system where backlash exists.
SOLUTION: Estimators 91, 92, 93, 94 operate disturbance during motor control and an operating unit 95 having a function for varying depending on an estimated value operates a PI gain for controlling a motor 7. The motor is operated with a small gain while taking account only the rotor inertia during backlash and operated with a maximum gain in the control system when the motor is coupled with a load. During backlash, gain is decreased while bringing I gain to 0 and only P control is performed. In this regard, a torque error from the estimator is operated and fed back in order to compensate for the gain.
March 25, 2005
December 28, 1998
H02P29/00; H02P5/00; H02P6/06; H02P23/00; H02P29/00; H02P5/00; H02P6/00; H02P23/00; (IPC1-7): H02P6/06; H02P5/00; H02P5/28