Stepper motor valve actuator

Details Stepper motor valve actuator Stepper motor valve actuator

1976-06-16

1978-01-24

Rubinson, Gene Z.

Electricity: motive power systems

Motor-reversing

Armature or primary circuit control

318207A, 318212, H02P 142

Patent

active

040706044

ABSTRACT:
An actuator control system includes a ballscrew type actuator for controlling the positioning of a valve device. A control circuit is responsive to pulsed drive signals for driving a synchronous stepper motor which is operatively coupled to the actuator. The control circuit includes a switching device which applies a DC voltage to the motor windings to hold the valve position when it is not being driven.

REFERENCES:
patent: 3286148 (1966-11-01), Henderson
patent: 3302085 (1967-01-01), Hulls et al.
patent: 3568019 (1971-03-01), Hirokawa et al.
patent: 3997826 (1976-12-01), Mayer

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