Electric motor controls for mechanical actuators

Details Electric motor controls for mechanical actuators Electric motor controls for mechanical actuators

1982-12-10

1984-08-21

Rubinson, G. Z.

Electricity: motive power systems

Nonrunning, energized motor

318 40, 318331, 318430, 318469, 318490, 33164R, 361 31, H02P 122

Patent

active

044672500

ABSTRACT:
Methods and apparatus for controlling an electric motor effect operation of such motor by electric energization thereof, and derive from a motor winding or from the back electromotive force of the motor an electric signal indicative of motor speed. The motor is thereupon mechanically stalled, and such stalling is detected from a comparison of the derived speed signal and the electric energization. Deenergization of the motor is effected in response to the stalling detected from the latter comparison. Limit switching of electric motors and actuators without limit switches may be provided in this manner.

REFERENCES:
patent: 2294831 (1942-09-01), Carson
patent: 2624121 (1953-01-01), Knobel
patent: 3803470 (1974-04-01), Vosteen
patent: 4338552 (1982-07-01), Pilz et al.

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