Abstract
Multiple magnetic suspension suspends multiple floators with a single power amplifier. It is classified into parallel magnetic suspension and series magnetic suspension. In this paper, the feasibility of parallel magnetic suspension is studied experimentally. Parallel magnetic suspension systems are classified into according to the output type of amplifier and the connection method of coils. However, the polarity of electromagnet has not been treated yet. This paper focuses on the current-controlled multiple suspension system with different polarities. Stable levitation with two floaters is achieved by using PD control.
