System for controlling a separately excited constant load DC ele

Details System for controlling a separately excited constant load DC ele System for controlling a separately excited constant load DC ele

1978-06-12

1981-10-27

Smith, Jr., David

Electricity: motive power systems

Synchronous motor systems

Brushless motor closed-loop control

318278, 318391, 318407, H02P 516

Patent

active

042976235

ABSTRACT:
A separately excited constant load DC electric motor is controlled in resse to a source of current for the desired motor speed. Current from the source applied to the motor armature is modified by a motor loss simulator circuit responsive to the source. The circuit simulates the losses the motor is expected to have in response to the current derived from the source, whereby the actual motor speed corresponds with the desired motor speed despite the loss. The losses are simulated during acceleration and deceleration as well as steady state intervals of the current source, which can be actuated to drive the motor in both directions.

REFERENCES:
patent: 3181050 (1965-04-01), Berman
patent: 3185364 (1965-05-01), Kleist
patent: 3359477 (1967-12-01), Wasai et al.
patent: 3394294 (1968-07-01), Leroi et al.
patent: 3593087 (1971-07-01), Pantelakis
patent: 3683252 (1972-08-01), Maynard
patent: 3697844 (1972-10-01), Dinger
patent: 3706020 (1972-12-01), Klang
patent: 4010411 (1977-03-01), Wisman

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