GAIN SCHEDULED CONTROL USING POLE-PLACEMENT APPROACH OF MAGNETIC LEVITATION SYSTEM INCLUDING RAIL FLEXIBILITY

초록

One of the main technologies of the Maglev train is suspension control. However, it is very hard to design the controller of electromagnetic suspension system(EMS), because the nature of the EMS is highly nonlinear and unstable. Especially the controller must guarantee the robust stability and performance under the worst condition. According to the flexibility of girder, vibration of rail can be generated while driving. Because of this reason, the levitation system may be unstable. This paper proposes a gain scheduled control using pole-placement approach for levitation control of Maglev system considering the rail vibration. Simulations show that the proposed controller has good performance against several disturbances including the rail vibration and model uncertainty.