The Observer Design of The Electromagnetic Suspension System Using Kalman Filter

초록

The objective of levitation control design is to stabilize a levitation system, or obtain certain transient response, bandwidth, and steady state error. An air gap signal from the each corner is important parameter to design levitation controller. A levitation controller using gap signals with measurement delay time can not make a expected performance. In this paper, a new air gap estimator to improve the performance of levitation controller is proposed. The estimated air gap signal which has little measurement delay time is used as a feedback value in the levitation controller. In order to confirm the improved performance of the feedback control system using Kalman estimator, simulation is performed.