Method of limiting current in a DC motor and DC motor system for

Details Method of limiting current in a DC motor and DC motor system for Method of limiting current in a DC motor and DC motor system for

1996-05-14

1998-12-08

Sircus, Brian

Electricity: motive power systems

Limitation of motor load, current, torque or force

318254, 361 31, 361101, H02H 504

Patent

active

058475230

ABSTRACT:
The invention relates to a method of current limitation in a direct current motor, with the following steps: in successive cycles, the motor is turned on at a predetermined place in the cycle and, after lapse of a predetermined time interval, the motor current is tested in a first test and, if found to be too high, the current is shut off; after lapse of another interval measured from the first test, the motor current is tested again during the same cycle and, if found to be too high, is shut off if it was not shut off previously; after lapse of a third interval, measured from the second test, the motor current is turned on, insofar as it was shut off at either of the two tests, and the cycle is repeated.

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