Magnetic flux density modeling method of maglev system

Modeling is the basis work of the analysis and design of a control system, and models obtained by different modeling methods have different characteristics. In the maglev system, current is generally used as a state to model. Through analysis and comparison in this paper, compared with modeling with current state, using magnetic flux density as a state to model the maglev system, the model is much simpler, the linear model is more accurate and more close to the real system. Besides, based on the model built by magnet flux density state method, state feedback is more beneficial to the stabilization of the system, the control performance is better and the coupling interference between suspension points is smaller.