发明名称 SPEED CONTROL APPARATUS FOR INDUCTION MOTOR
摘要 PURPOSE: A speed control apparatus for induction motor is provided to achieve an optimized response of system by varying the proportional gain and integral gain in accordance with the speed error. CONSTITUTION: A speed control apparatus comprises a subtracter(211) for calculating a speed error(Werr) by subtracting a feedback speed(W) from a speed command(W'); a proportional controller(212) for compensating output of the subtracter with the proportional gain; an integral controller(213) for compensating output of the subtracter with the integral gain; an adder(214) for adding the output of the proportional controller and the output of the integral controller, and generating a torque command(Tr); a speed control unit(215) for outputting the speed command to an induction motor by performing an arithmetic operation to the output of the adder; and a gain converting unit(216) for varying the gain of the proportional controller and the integral controller in accordance with the output of the subtracter.
申请公布号 KR100294631(B1) 申请公布日期 2001.04.18
申请号 KR19960004389 申请日期 1996.02.23
申请人 LG IND. SYSTEMS CO., LTD. 发明人 KIM, YEONG MIN
分类号 (IPC1-7):H02P5/40 主分类号 (IPC1-7):H02P5/40
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