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《Journal of Vibration and Shock》 2007-01
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LQR CONTROL OF POWER FLOW TRANSMISSION FOR A MOTOR-FOUNDATION DYNAMIC COUPLED SYSTEM

Sun Yuguo~1,Song Kongjie~2(1.School of Optical and Electronic Information,University of Shanghai for Science and Technology,Shanghai 200093;2.School of Mechanical Engineering,Shandong University,Jinan 250061)  
In aircraft and submarine engineering,a vibrating motor is usually mounted on a flexible foundation.The dynamic coupled characteristic of the motor-foundation is studied in the state space.The model simplification and modal displacement measurement methods are presented.The power flow transmission from the motor to the foundation is then controlled by a linear quadratic regular(LQR).The numerical calculation results show that the power flow transmission is mostly attributed by the motor rigidbody mode and the first bend mode of the foundation.In the low frequency band,the dynamic behavior of the coupled system could be described by a eight order state equation.The power flow transmission in the resonance bands could be reduced effectively with modal velocity being objective index of LQR.
【Fund】: 中船总公司预研项目(10.6.2.2)
【CateGory Index】: TH113.1
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