Abstract

Recently, research on a conveyance system based on magnetic levitation of a steel plate has been active. Since the design of its control system is generally carried out for a linearized model, it is difficult to secure satisfactory robustness in the control system. This is because nonlinearity and several disturbances exist in reality. In addition, for an actual steel plate conveyance process it will be necessary to develop a control system that takes into consideration various parameter errors, such as nonuniformity of the plate thickness and the associated weight variation. In this paper, we examine the achievement of robustness to steel plate thickness variation using μ-synthesis.

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