Electricity: motor control systems – Closed loop speed control system for dc motor with commutator – Analog armature control
Patent
1995-07-27
1997-10-28
Masih, Karen
Electricity: motor control systems
Closed loop speed control system for dc motor with commutator
Analog armature control
388906, 388811, 388902, 318109, G05F 110
Patent
active
056824599
ABSTRACT:
A speed control for controlling the speed of a DC motor provides improved speed regulation during transient loading conditions. The control includes a regulating circuit having an output for controlling the armature voltage to the motor, An input speed reference signal corresponding to the desired speed is provided to the regulating circuit. A feedback signal proportional to armature voltage is also provided to the regulating circuit to establish an error signal for operating the control to regulate the voltage to the motor and therefore the motor speed, An IR compensating circuit provides increased motor voltage when the load increases. The voltage drop due to the armature circuit inductance is measured directly and also utilized to alter the output of the regulator to compensate for the inductive voltage drop occurring under transient loading conditions in a manner tending to establish the speed at the desired speed corresponding to the speed reference signal, during such conditions.
REFERENCES:
patent: 5351336 (1994-09-01), Wilkerson
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