Vibration Suppression for Active Magnetic Bearings Using Adaptive Filter with Iterative Search Algorithm

作     者：Jin-Hui Ye Dan Shi Yue-Sheng Qi Jin-Hui Gao Jian-Xin Shen Jin-Hui Ye;Dan Shi;Yue-Sheng Qi;Jin-Hui Gao;Jian-Xin Shen

作者机构：IEEE Department of Electrical EngineeringZhejiang UniversityHangzhou 310027China CESand IEEE 

出 版 物：《CES Transactions on Electrical Machines and Systems》 (中国电工技术学会电机与系统学报（英文）)

年 卷 期：2024年第8卷第1期

页      面：61-71页

核心收录：

学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 080902[工学-电路与系统] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 

基　　金：supported by the Natural Science Foundation of China (U22A20214) 

主　　题：Active Magnetic Bearing(AMB) Adaptive filter Iterative search algorithm Least mean square(LMS) Vibration suppression 

摘      要：Active Magnetic Bearing(AMB) is a kind of electromagnetic support that makes the rotor movement frictionless and can suppress rotor vibration by controlling the magnetic force. The most common approach to restrain the rotor vibration in AMBs is to adopt a notch filter or adaptive filter in the AMB controller. However, these methods cannot obtain the precise amplitude and phase of the compensation current. Thus, they are not so effective in terms of suppressing the vibrations of the fundamental and other harmonic orders over the whole speed range. To improve the vibration suppression performance of AMBs,an adaptive filter based on Least Mean Square(LMS) is applied to extract the vibration signals from the rotor displacement signal. An Iterative Search Algorithm(ISA) is proposed in this paper to obtain the corresponding relationship between the compensation current and vibration signals. The ISA is responsible for searching the compensating amplitude and shifting phase online for the LMS filter, enabling the AMB controller to generate the corresponding compensation force for vibration suppression. The results of ISA are recorded to suppress vibration using the Look-Up Table(LUT) in variable speed range. Comprehensive simulations and experimental validations are carried out in fixed and variable speed range, and the results demonstrate that by employing the ISA, vibrations of the fundamental and other harmonic orders are suppressed effectively.