Speed controller of motor

Details Speed controller of motor Speed controller of motor

1991-11-01

1994-12-27

Shoop, Jr., William M.

Electricity: motor control systems

Closed loop speed control system for dc motor with commutator

Armature control by digital or combined analog and digital...

388902, 3889075, A02P 500

Patent

active

053772954

ABSTRACT:
Disclosed is a speed controller of a motor which comprises a rotation sensor for generating an A.C. signal having a period in accordance with a rotating speed of a motor; speed detection device for effecting detection operations a plurality of times per round of the motor by the A.C. signal of the rotation sensor; compensation device for generating a control signal on the basis of a detection signal of the speed detection device; and driving device for driving the motor in accordance with the control signal of the compensation device; wherein the compensation device includes rotation error detection device for obtaining a rotation error responsive to the detection signal of the speed detection device; memory device for storing a memory value; memory output value generation device for generating a memory output value by the use of the memory value of the memory device; filter device for obtaining a calculation error from the rotation error; renewing and storing device for renewing and storing substantially sequentially the memory value of the memory device by a renewed value corresponding to a value obtained by calculating and synthesizing the calculation error and the memory output value whenever the speed detection device effects Q times detection operations; and control signal generation device for generating a control signal responsive to the rotation error of the memory output value.

REFERENCES:
patent: 4078193 (1978-03-01), Anderson et al.
patent: 4554492 (1985-04-01), Karpowicz et al.
patent: 4580083 (1986-04-01), Omue et al.
patent: 4684856 (1987-09-01), Kahkipuno
patent: 4755729 (1988-07-01), Gotou
patent: 4789961 (1988-12-01), Tindall
patent: 4821168 (1989-04-01), Gotou

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