Robust H_∞ DIA Control of Levitated Steel Plates

Abstract

This paper deals with an application of H_∞ DIA control to the magnetically levitated steel plates. Our goal in this research is to suspend two thin steel plates stably by using four electromagnets without any physical contacts. We apply the robust H_∞ DIA control approach to the magnetically levitated steel plates. The H_∞ DIA control problem treats a mixed Disturbance and an Initial state uncertainty Attenuation and it is expected to provide a good transient property to a control system. Experimental results show that the proposed robust control approach is effective for suppressing an elasticity vibration of steel plates.