摘要
针对磁轴承高精度的要求,提出了基于干扰观测器的磁轴承抑制扰动的控制方法,建立了磁轴承的广义被控对象模型,分析并设计了多变量的干扰观测器和分散控制系统,对其进行的仿真分析表明,设计的系统具有良好的稳定性与扰动抑制性能。最后试验验证了干扰观测器作用时转子位移比未加入干扰观测器时降低了63.8%,该控制系统能够大幅度提高转子受扰动时的精度,增强了抑制外界扰动的能力。
Aiming at the requirement of high precision, controller based on Disturbance Observation（DOB） was proposed to reject disturbance for magnetic bearing. It set up generalized model of magnetic bearing, analyzed and designed the multi - variable DOB and decentralized controller. The simulation result indicated that the control system exhibited broad stability margin and favorable ability in disturbance attenuation. Experiments verified that the rotor displacement obviously reduced 63.8% compared to non - DOB controller with disturbance. This controller improved the precision of rotor and enhanced the ability of disturbance rejection.
出处
《轴承》
北大核心
2009年第8期6-9,共4页
Bearing
基金
国家自然科学基金资助项目(60704025)
关键词
磁轴承
扰动抑制
精度
稳定性
干扰观测器
magnetic bearing
inhibit disturbance
precision
stability
disturbance observation
