基于软件延时补偿的高速磁悬浮电机转子低频颤振抑制研究

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振动与冲击 ›› 2014, Vol. 33 ›› Issue (10) : 183-188.

论文

基于软件延时补偿的高速磁悬浮电机转子低频颤振抑制研究

刘健1,2，韩邦成1,2，王英广1,2

作者信息 +

Research on low frequency chatter suppressing of high speed magnetic suspension motor and based on software time delay compensation

LIU Jian1,2，HAN Bang-cheng1,2，WANG Ying-guang1,2

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文章历史 +

摘要

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36.8 μm，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。

Abstract

Aiming at resolving the problem that a magnetic suspension rotor is instable because of low frequency chatter in high speed, it is analyzed and modeled from the control system’s computation delay and its effect on a power amplifier system in this paper. A software method used for compensating the control system computation delay is proposed in this paper, which can be utilized to eliminate the control system’s computation delay, improve the tracking ability of power amplifier’s current in high frequency and suppress the low frequency chatter of the magnetic suspension motor’s rotor in high speed. Related experiments were performed at 24000rpm for the 100kW magnetic suspension motor. The results of the experiments showed that the low-frequency gain of the magnetic suspension motor decreased by 20dB, and the chatter of it was reduced by 36.8μm. The control precision increased by 63.89%. The software method mentioned above can effectively suppress the low frequency chatter and improve the stability of the magnetic suspension motor in high speed.

导出引用

刘健;韩邦成;王英广;. 基于软件延时补偿的高速磁悬浮电机转子低频颤振抑制研究[J]. 振动与冲击, 2014, 33(10): 183-188

LIU Jian;HAN Bang-cheng;WANG Ying-guang;. Research on low frequency chatter suppressing of high speed magnetic suspension motor and based on software time delay compensation[J]. Journal of Vibration and Shock, 2014, 33(10): 183-188