2022 Volume 30 Issue 2 Pages 258-263
The superconducting magnetic levitation system is stable without control, but vibration suppression is required due to low damping caused by non-contact support. As a means of achieving this, electromagnetic shunt dampers composed of LCR electric circuits can be used to achieve effective vibration suppression without compromising the non-contact nature of the levitation system. However, since the velocity term is involved in the coupling between the kinetic and electrical systems, conventional vibration mode analysis cannot be used, and optimization of vibration control design becomes an issue. On the other hand, a method called non-classical mode analysis has been reported, which can be applied to systems that include coupled velocity terms. In this study, the behavior of a parallel shunt damper was investigated using this method, and it was found that dynamics of the system can be decomposed into two uncoupled modes of damped vibration.
