Abstract
In this paper, a controller design by H∞ control theory for active suspension of maglev vehicles by the use of superconducting magnets (SCM) is considered. The following two items are focused on for designing the controller. In maglev vehicles SCMs are very heavy. SCMs are intended to be suspended from trucks. The fundamental vibration model is composed of three masses and it is different from conventional suspensions of rail vehicles. Maglev vehicles are planned to be articulated vehicles. Enormous number of degrees of freedom exists for a model of a train. In this paper, it is shown by simulation that the H∞ controller functions successaully when applied to a three-mass system, i.e., good ride quality is obtained without a peak actuator output in the respective frequency domain, and in articulated vehicles, the H∞ controller can maintain a good of control when superpositioned for each direction of car-body vibration.
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