Active vibration transmissioncontrol of a shafting system with water lubricated rubber bearings
HU Fang1,2，ZHANG Zhi-yi1，WU Tian-xing1，HUA Hong-xing1
1.School of Mechanical Engineering, Shanghai Jiaotong University，Shanghai 200240, China；2.School of Material Science and Technology, Wuhan University of Technology, Wuhan 430070, China
Abstract：Suppressing the vibration ofshafting bearings is an effective measure to reduce vibration transmission from the shaftingto its elastic support. This paper investigates active vibration transmission control of ashaftingsystem,which cosists of water-lubricated rubber bearings and a thrust bearing,and presents an activecontrol scenario,which uses inertial electromagnetic actuatorsto tranquilizethe thrust bearing. The active controlmethod employs an online identification and filtering algorithm to establish the control channel model influenced by the shaft-speed-dependent characteristicsof the rubber bearings. A simplified physical model is presented to explore the mechanism of the speed- dependent characteristics. The LMS-based adaptive identification algorithm and the subspace filtering algorithm are applied toderive for the control channel anFIR modelwithout noise contamination caused otherwise by the speed-modulated periodical disturbances.Transmission suppression is realized via the Filtered-x LMS algorithmenforced with two additional units fordisturbance reconstructionand saturation alleviation.The simulation and experimental results have demonstrated that the online identification of the FIR model is effective and the active control mthod is able to suppress the speed-modulated periodical vibration of the shafting bearing.
胡 芳;张志谊;吴天行;华宏星. 含橡胶轴承轴系振动传递主动控制研究[J]. , 2014, 33(20): 63-69.
HU Fang;ZHANG Zhi-yi;WU Tian-xing;HUA Hong-xing. Active vibration transmissioncontrol of a shafting system with water lubricated rubber bearings. , 2014, 33(20): 63-69.
2014, Vol. 33 
