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1.发明授权Motor speed control system with timed speed reference clamp and speed error spill-through circuit 失效具有定时速度参考钳位和速度错误溢出电路的电机速度控制系统
公开(公告)号：US3900781A
公开(公告)日：1975-08-19
申请号：US37398973
申请日：1973-06-27
Applicant: CUTLER HAMMER INC
Inventor： SMITH CHARLES E , HINK KARL M , GREENING DONALD J , GREENING EXECUTRIX BY DOROTHY
CPC classification number: H02P7/293
Abstract: A D.C. motor control system of the closed loop regulating type is disclosed. The system includes a timed speed reference circuit with means for clamping the same to hold the speed reference voltage change at a rate that corresponds to the rate of motor speed change when armature current limit action occurs during acceleration and deceleration periods of the motor. A speed error spill-through circuit is also provided to increase the proportional speed gain of the system when the speed error increases beyond a given percentage of base speed to afford improved damping characteristics and reduce overshoot or undershoot of the overall motor drive.
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