Torque-angle stabilized servo motor drive

Details Torque-angle stabilized servo motor drive Torque-angle stabilized servo motor drive

1987-06-15

1988-08-02

Shoop, Jr., William M.

Electricity: motive power systems

Positional servo systems

With particular motor control system responsive to the...

318696, 318254, G05B 1940

Patent

active

047615982

ABSTRACT:
A torque-angle stabilized servo motor drive which includes a constant current source and drive electronics responsive to step-control input signals for selectively applying current from the constant current source to the windings of a stepper motor. An encoder is coupled to the motor output shaft and provides a signal indicative of angular position of the rotor and shaft. Torque angle between the rotor and the magnetic field of the motor stator is determined as a function of a difference between the position-indicating encoder output and the control signals to the motor drive electronics, and such control signals are modified as a function of torque angle to obtain desired motion at the motor output shaft.

REFERENCES:
patent: 3766458 (1973-10-01), Nishimura et al.
patent: 4426608 (1984-01-01), Larson et al.
patent: 4439717 (1984-03-01), Berney
patent: 4578606 (1986-03-01), Welterlin
patent: 4680515 (1987-07-01), Crook

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