Method of and apparatus for controlling motor

Details Method of and apparatus for controlling motor Method of and apparatus for controlling motor

1993-04-06

1998-09-15

Wysocki, Anthony

Electricity: motive power systems

Plural diverse motor controls

Running-speed control

H02P 700

Patent

active

058084290

ABSTRACT:
A method of controlling operation of a DC motor including the steps of detecting the level of acceleration caused by the rotation of the output shaft of the DC motor; determining the square root of the detected level of acceleration; and supplying the DC motor with a driving voltage which is determined in accordance with the difference between the square root of the acceleration and a voltage command. This method is carried out by an apparatus which includes a power supply for supplying an electric power to the DC motor; a rotary member rotatable in accordance with the rotation of the output shaft of the DC motor; an acceleration sensor provided on the rotary member for detecting the acceleration of acting on the rotary member; a square root circuit for computing the square root of the output from the acceleration sensor; and a differential amplifier circuit for supplying the DC motor with a voltage which is determined in accordance with the difference between the voltage of the power supply and the output voltage of the square root circuit.

REFERENCES:
patent: 1490720 (1924-04-01), Alexanderson
patent: 3699555 (1972-10-01), DuVall
patent: 3785463 (1974-01-01), Kuhl et al.
patent: 4023864 (1977-05-01), Lang et al.
patent: 4322672 (1982-03-01), Walker
patent: 4843296 (1989-06-01), Tanaka
patent: 4959808 (1990-09-01), Neuffer et al.

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