CAJ | 학술논문

针对磁悬浮电机高速时由于低频颤振导致转子失稳问题，由控制系统计算延时及对功放系统影响进行分析、建模，提出控制系统软件延时补偿算法消除控制系统计算延时，提高功放系统高频时电流跟踪能力，抑制磁悬浮电机转子高速时低频颤振，并在100 kW磁悬浮电机上进行实验验证。结果表明，通过软件延时补偿算法消除控制系统计算延时，磁悬浮电机转子低频增益可减小20 dB，转子在24000 r/min时跳动量减小36．8μm，控制精度提高63．89％。该方法不但能有效抑制磁悬浮转子高速时的低频颤振，且可提高磁悬浮电机高速时的稳定性。
침대자현부전궤고속시유우저빈전진도치전자실은문제，유공제계통계산연시급대공방계통영향진행분석、건모，제출공제계통연건연시보상산법소제공제계통계산연시，제고공방계통고빈시전류근종능력，억제자현부전궤전자고속시저빈전진，병재100 kW자현부전궤상진행실험험증。결과표명，통과연건연시보상산법소제공제계통계산연시，자현부전궤전자저빈증익가감소20 dB，전자재24000 r/min시도동량감소36．8μm，공제정도제고63．89％。해방법불단능유효억제자현부전자고속시적저빈전진，차가제고자현부전궤고속시적은정성。
Aiming at the problem that the rotor of a high speed magnetically suspended motor is instable due to low frequency chatter,the control system's computation time delay and its effect on a power amplifier system were analyzed and modeled here.A software method used for compensating the control system computation time delay was proposed,it was utilized to eliminate the control system's computation time delay,improve the tracking ability of power amplifier's current at high frequency range and suppress the low frequency chatter of a high speed magnetic suspension motor's rotor.The corresponding tests were performed at the rotor speed of 24000 r/min for a 100 kW magnetic suspension motor.The test results showed that the low-frequency gain of the magnetic suspension motor decreases by 20 dB,and the rotor chatter reduces by 36.8 μm;the control accuracy increases by 63.89%.It was shown that the software method mentioned above can be used to effectively suppress the low frequency chatter and improve the stability of high speed magnetic suspension motors.