Apparatus and method for controlling the rotation speed of elect

Details Apparatus and method for controlling the rotation speed of elect Apparatus and method for controlling the rotation speed of elect

1991-06-12

1996-12-31

Martin, David S.

Electricity: motor control systems

Open loop speed control system for dc motor with commutator

Analog armature control

H02P 7285

Patent

active

055902375

ABSTRACT:
The device for controlling the rotation speed of electric motors comprises an adjustable frequency generator (2) generating an output signal (s.sub.1) having a frequency which can be adjusted in relation to the desired speed (v.sub.d), a pulse generator (3) having a pre-determined period controlled by the adjustable frequency generator in such a way as to generate a control signal (s.sub.2) comprising a series of pulses at the adjustable frequency set by the frequency generator (2). The control signal (s.sub.2) is provided to a control unit (5) for the motor (6) whose rotation speed is to be controlled. The control unit thus provides a supply to the motor (6) corresponding to the control signal pulses. FIG. 1.

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patent: 4424470 (1984-01-01), Finch
patent: 4447709 (1984-05-01), Whitman, III

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