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		自抗扰控制框架下的摩擦力振动分析 1)
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			ANALYSIS OF FRICTION INDUCED VIBRATION UNDER THE ACTIVE DISTURBANCE REJECTION CONTROL FRAMEWORK 1)
			 
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		 图 10. $\beta=2$时LuGre模型系统的稳定极限环周期  | 
	
Fig. 10. Period of stable limit cycle for the LuGre model system with $\beta=2$  | 
	
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