2024 年 32 巻 1 号 p. 189-194
Although superconducting magnetic levitation systems are capable of stable levitation without control, vibration suppression is required due to low damping. One possible way to achieve this is to use an electromagnetic shunt damper with an LCR electrical circuit. However, the direct application of conventional modal analysis is difficult for the LCR parallel type because of the significant velocity term coupling in the circuit equations of the subsystem. Our previous study proposed a method to effectively reduce the amplitude of the main system by applying non-classical modal analysis, which also takes the velocity term into account. On the other hand, in the present study, the impedance expression of the subsystem is used to eliminate the velocity term coupling, allowing the application of conventional classical modal analysis. This study investigates the effect of parameter values on resonance, comparing the results of this classical and nonclassical modal analysis.
