Electricity: motor control systems – Closed loop speed control system for dc motor with commutator – Armature control by digital or combined analog and digital...
Patent
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
Butler David H. E.
Naitoh Haruo
Kabushiki Kaisha Toshiba
Martin David
Shoop Jr. William M.
The Broken Hill Proprietary Company Limited
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