Torque motor driver

Details Torque motor driver Torque motor driver

1990-02-27

1991-03-12

Ro, Bentsu

Electricity: motive power systems

Limitation of motor load, current, torque or force

361 30, H02H 709

Patent

active

049995529

ABSTRACT:
A torque motor driver apparatus utilizing an operational amplifier driver which operates near zero milliamps output current, to drive and control a torque motor of non-zero null current, with minimum steady-state power consumption and full functional performance. An enable/disable fail safe switch is included and is positioned in series with the power source and torque motor to disable the torque motor as necessary. A pair of sensing units sense the torque motor voltage and DC resistance to provide a fault indication when either a low resistance or shorted condition or high resistance or open condition exists.

REFERENCES:
patent: 3868554 (1975-02-01), Konrad
patent: 4531081 (1985-07-01), Liesegang
patent: 4532567 (1985-07-01), Kade
patent: 4547715 (1985-10-01), Li
patent: 4574226 (1986-03-01), Binder
patent: 4611154 (1986-09-01), Lambropoulos et al.
patent: 4725765 (1988-02-01), Miller
patent: 4818924 (1989-04-01), Burney
patent: 4873453 (1989-10-01), Schmerda et al.
patent: 4901181 (1990-02-01), Miyanaga et al.
patent: 4933614 (1990-06-01), Kawata

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