可变磁路式永磁悬浮系统的动力学特性研究

中国机械工程 ›› 2014, Vol. 25 ›› Issue (20): 2782-2787.

可变磁路式永磁悬浮系统的动力学特性研究

孙兴伟;路英园;孙凤;金俊杰;王可

沈阳工业大学,沈阳,110870

出版日期:2014-10-25 发布日期:2014-10-24
基金资助:
国家自然科学基金资助项目(51105257);辽宁省博士启动基金资助项目(20111042）

Research on Dynamics Performance of Permanent Magnet Suspension System with Variable Magnetic Circuit

Sun Xingwei;Lu Yingyuan;Sun Feng;Jin Junjie;Wang Ke

Shenyang University of Technology,Shenyang,110870

Online:2014-10-25 Published:2014-10-24
Supported by:
National Natural Science Foundation of China（No. 51105257）

摘要/Abstract

摘要：

介绍一种由伺服电机、盘状径向磁化永磁铁和导磁体组成的可变磁路式永磁悬浮系统。该系统中永磁铁提供悬浮力,伺服电机驱动盘状永磁铁旋转,改变通过悬浮物的磁通量，实现悬浮力的实时控制。该悬浮系统可以实现零吸引力,避免接触吸附问题,可以实现稳定状态下的零功率悬浮,达到节能减排的目的;可以任意改变磁极特性，实现在多自由度系统上的灵活应用。在综合考虑系统漏磁特性的条件下建立系统的参数化模型，分析系统的动力学和控制特性,然后进行系统的悬浮特性仿真研究,结果表明该系统在一定外扰下可实现稳定悬浮，并且具有较理想的时域和频域响应特性。

关键词: 可变磁路, 永磁悬浮, 可控性, 可观测性

Abstract:

This paper proposed a magnet suspension system with variable magnetic circuit, which was composed of a servo motor, a radial magnetized disk permanent magnets and a pair of magnetizers. The suspension force was provided by the permanent magnet in the system, the servo motor drove the disk permanent magnet rotation, changed the magnetic flux flowing through the suspended object, then realized the real time control of suspension force. The suspension system could realize zero attractive force for avoiding the disadvantages of touching attraction; could achieve zero-power suspension in the stable suspension state for save-energy suspension; could change the magnetic poles for realizing multi-degree suspension system, the system's magnetic flux leakage features were considered, the system's parameterized model was set up, the dynamics and control characteristics of this system were analyzed. Finally, the suspension characteristics were analyzed using numerical simulation, and the results show that the system can realize stable suspension under certain disturbances, and possess ideal time-domain and frequency-domain response characteristics.

Key words: variable magnetic circuit, permanent magnetic suspension, controllability, observability

中图分类号:

TH-39
TH113

孙兴伟, 路英园, 孙凤, 金俊杰, 王可. 可变磁路式永磁悬浮系统的动力学特性研究[J]. 中国机械工程, 2014, 25(20): 2782-2787.

Sun Xingwei, Lu Yingyuan, Sun Feng, Jin Junjie, Wang Ke. Research on Dynamics Performance of Permanent Magnet Suspension System with Variable Magnetic Circuit[J]. China Mechanical Engineering, 2014, 25(20): 2782-2787.

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