Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : December 09, 2021 - December 10, 2021
The purpose of this study is to reduce the vibration of a repulsive magnetic levitation system using adaptive control method. Active vibration control is necessary to ensure the dynamic stability of repulsive magnetic levitation systems because it is repulsive magnetic levitation system is levitated. Therefore, the vibration is virtually undamped. The purpose of this study is to control the vibration with electromagnetic force generated by using the coil as an actuator. In doing so, we must consider the strong nonlinearity and amplitude dependence of the repulsive magnetic levitation system. This is attributed to the levitation force generated by the magnet varies with the position of the levitating body due to Coulomb's law. Therefore, in this study, simple adaptive control (SAC) method is appropriate to vibration reduction. The experimental device used in the study was designed according to a single-degree-of-freedom system model, and the levitating body with the coil moves up and down using linear guides. The result of the study, it is confirmed that SAC method improves vibration and amplitude dependence.
