基于高功率密度磁悬浮高速电机的全参数自适应控制

Research on All Coefficient Adaptive Control of High-power Density Magnetic Levitation High-speed Motor

高功率密度磁悬浮高速电机运行过程中会受到外来扰动,影响磁悬浮轴承稳定悬浮,且磁悬浮轴承系统模型本身也具有一定的不确定性。因此,寻求一种能够解决外来扰动和系统模型不确定性的控制算法具有实际意义。全参数自适应控制(All Coefficient Adaptive Control,ACAC)是一种智能控制方法,它的设计不依赖于事先设定的被控对象的数学模型,而是识别被控对象的特征模型,能够很好的应对外来扰动和模型不确定性问题。文中分析了传统PID控制理论与自适应控制的优缺点,研究了ACAC对于高功率密度磁悬浮高速电机受外来扰动的控制作用,实现了磁悬浮轴承的稳定悬浮。

The high power density magnetic levitation high-speed motor is subjected to external disturbances during operation,which affects the stable suspension of the magnetic bearing,and the magnetic bearing system model itself also has certain uncertainties.Therefore,it is of practical significance to seek a control algorithm that can solve the uncertainty of extraneous disturbances and system models.All coefficient adaptive control is an intelligent control method that does not rely on the mathematical model of the controlled object set in advance,but recognizes the characteristic model of the controlled object,which can well cope with external disturbances and model uncertainty.In this paper,the advantages and disadvantages of traditional PID control theory and adaptive control are analyzed,and the control performance of ACAC on extraneous disturbances of high-power density magnetic levitation high-speed motors is studied,so as to realize the stable levitation of magnetic bearings.