Phase commutator for closed loop control of a stepping motor

Details Phase commutator for closed loop control of a stepping motor Phase commutator for closed loop control of a stepping motor

1983-02-21

1984-10-16

Truhe, J. V.

Electricity: motive power systems

Open-loop stepping motor control systems

318685, H02K 2904

Patent

active

044777574

ABSTRACT:
A closed loop control system for a stepper motor provides the necessary feedback to accurately control the position of a motor during acceleration, constant velocity and deceleration. Generation of commutation signals is based upon a monitoring of motor position to determine the points where commutation would result in maximum accelerating torque during acceleration and constant velocity and minimum braking torque during deceleration. These points indicate the earliest points at which commutation may occur. Commutation may be delayed in order to reduce the accelerating torque during acceleration and constant velocity or increase the braking torque during deceleration.

REFERENCES:
patent: 3374410 (1968-03-01), Crongmist et al.
patent: 4065708 (1977-12-01), Ulland et al.
Kuo et al., Proceedings 11th Annual Synposium on Incremental Motion Control Systems and Devices, May 1982, pp. 295-308.
Higuchi, ibid, pp. 289-294.

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