Nonlinear dynamic analysis of 2-DOF nonlinear vibration isolation floating raft systems with feedback control |
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| Authors: | Yingli Li Daolin Xu Yiming Fu Jiaxi Zhou |
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| Affiliation: | 1. College of Civil Engineering and Architecture, Zhejiang University, Yuhangtang Road 866#, Hangzhou 310058, People?s Republic of China;2. School of Civil and Environmental Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore;3. Department of Civil & Environmental Engineering, Imperial College London, London SW7 2AZ, United Kingdom;1. State Key Laboratory of Mechanical System and Vibration, Shanghai Jiao Tong University, 800 Dong Chuan Road, 200240, Shanghai, PR China;2. Naval Research Center, 100073, Beijing, Box 1303-14, PR China;1. Department of Civil Engineering, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India;2. Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India;1. State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha 410082, PR China;2. College of Mechanical and Vehicle Engineering, Hunan University, Changsha 410082, PR China;3. School of Engineering, University of Liverpool, Liverpool L69 3GH, UK |
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| Abstract: | In this paper, the average method is adopted to analysis dynamic characteristics of nonlinear vibration isolation floating raft system with feedback control. The analytic results show that the purposes of reducing amplitude of oscillation and complicating the motion can be achieved by adjusting properly the system parameters, exciting frequency and control gain. The conclusions can provide some available evidences for the design and improvement of both the passive and active control of the vibration isolation systems. By altering the exciting frequency and control gain, complex motion of the system can be obtained. Numerical simulations show the system exhibits period vibration, double period vibration and quasi-period motion. |
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