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30 March 2009 Numerical simulation and experimental verification of semi-active control of cable vibration using MR damper
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Abstract
This paper presents the numerical simulation and experimental verification of a semi-active cable vibration control system. The finite-element analysis "ABAQUS" is used to design and simulate the dynamic characteristics of a cable structure. The system matrixes 'M', 'C' and 'K' of the simplified cable model is then generated from the finite element model. A 3 kN MR damper, made by Lord co., is connected to the cable to reduce the vibration. Through a systematic performance test and system identification procedure, the modified Bou-Wen model is generated to represent the nonlinear behavior of the MR damper. According to the simplified cable model and MR damper model, the LQG with continuously-optimal control is used to design the semi-active control system. The scaled-down cable structure is design and builds according to the finite-element model in ABAQUS. Suitable mass and cable force are added to make the cable vibration more realistic. A small shaker is designed and mounted onto the cable to generate the excitations with different amplitudes and frequencies. Both passive and semi-active control cases have been tested. Through the numerical simulation and experimental test results, the semi-active cable vibration control system with MR damper can reduce the cable vibration well under different kinds of excitations. This investigation demonstrates the feasibility and capabilities of a cable vibration control system with MR damper.
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Pei-Yang Lin, Shieh-Kung Huang, Kwei-Shi Cheng, and Chin-Hsiung Loh "Numerical simulation and experimental verification of semi-active control of cable vibration using MR damper", Proc. SPIE 7292, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2009, 72921D (30 March 2009); doi: 10.1117/12.812431; https://doi.org/10.1117/12.812431
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