Amplitude control of the track-induced self-excited vibration for a maglev system.
The Electromagnet Suspension (EMS) maglev train uses controlled electromagnetic forces to achieve suspension, and self-excited vibration may occur due to the flexibility of the track. In this article, the harmonic balance method is applied to investigate the amplitude of the self-excited vibration, and it is found that the amplitude of the vibration depends on the voltage of the power supplier. Based on this observation, a vibration amplitude control method, which controls the amplitude of the vibration by adjusting the voltage of the power supplier, is proposed to attenuate the vibration. A PI controller is designed to control the amplitude of the vibration at a given level. The effectiveness of this method shows a good prospect for its application to commercial maglev systems.
College of Mechatronics and Automation, National University of Defense Technology, Changsha 410073, PR China. Electronic address: Danf.Zhou@gmail.com.
Danfeng
D
Zhou
College of Mechatronics and Automation, National University of Defense Technology, Changsha 410073, PR China. Electronic address: eejieli_cn@yahoo.com.cn.
Jie
J
Li
College of Mechatronics and Automation, National University of Defense Technology, Changsha 410073, PR China. Electronic address: l-koala@163.com.
Kun
K
Zhang
Amplitude; Control; Maglev; Resonance; Vibration