Method and apparatus for controlling the speed of a motor

Details Method and apparatus for controlling the speed of a motor Method and apparatus for controlling the speed of a motor

1991-10-02

1993-11-16

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...

388930, 318432, 318646, H02P 5168

Patent

active

052631133

ABSTRACT:
An apparatus is disclosed which controls the speed of a motor driving a load. A speed controller finds the difference between a command speed value of the motor and a detected speed value of the motor and generates a command current value of the motor on the basis of the difference. A current controller controls current in the motor on the basis of a difference between a command current value received from the speed controller and a detected current value. A torque detector is mounted on the shaft, whereby the motor is connected to the load, for detecting torque acting on the shaft, and an adder adds the detected torque signal detected by the torque detector to the command current value received from the speed controller, the torque detection signal being a correction signal for controlling acceleration torque of the motor.

REFERENCES:
patent: 3756335 (1973-09-01), Eisele et al.
patent: 4535405 (1985-08-01), Hill et al.
patent: 4756375 (1988-07-01), Ishilcure et al.
patent: 4914726 (1990-04-01), Burke

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