Adaptive sliding mode control for an active magnetic bearing system

作者：Lou Xiaochun^*; Wu Guoqing

来源：Transactions of China Electrotechnical Society, 2012, 27(1): 142-147.

• Active magnetic bearing systems
• Active magnetic bearings
• Adaptive Control
• Adaptive sliding mode control
• Adaptive sliding mode controller
• Complex nonlinear system
• Control parameters
• Controlling system
• Experimental platform
• Magnetic bearing systems
• Simulation model
• Single degree of freedoms
• TMS320F2812
• Upper computer

The active magnetic bearing system is a complex nonlinear system and the system parameters often change with time. In this paper, the adaptive control and sliding mode control are combined to establish an adaptive sliding mode controller (ASMC) which is applied to a single degree of freedom magnetic bearing controlling system. With the system parameters changing the real-time control system can change the corresponding control parameters to make the system performance always maintain the optimal or nearly optimal. The simulation model of the single degree of freedom magnetic bearing based on ASMC and an experimental platform using PC as upper computer and TMS320F2812 as hypogyny are established. The simulation and experimental results show that the ASMS not only weaken the inherent chattering in the sliding mode control, but also has better robustness and rapidity. It can meet the real-time control requirements of the magnetic bearing system.

• 出版日期2012