Force Sensor Model Based on FEA for the Electromagnetic Levitation System

The traditional control strategy of the electromagnetic levitation system (ELS) is a voltage or current control strategy based on the gap sensor and the current sensor. In this paper, an electromagnetic force sensor model is proposed and the mapping relation between electromagnetic force with current and levitation gap is obtained by Maxwell computation. The new force sensor model is used in ELS's control simulation and the result shows a new force sensor model can work well.