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Feedforward and Feedback Vibration Control and Algorithm Design for Cable‐Bridge Structure Nonlinear Systems

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  • Yan-Jun Liang
  • Shi-Liang Wu
  • De-Xin Gao
  • Xiao-Rong Xue

Abstract

Technique of feedforward and feedback optimal vibration control and simulation for long‐span cable‐bridge coupled systems is developed. Buffeting loading systems of long‐span cable‐bridge structure are constructed by weighted amplitude wave superposition method. Nonlinear model of cable‐bridge coupled vibration control system is established and the corresponding system of state space form is described. In order to reduce buffeting loading influence of the wind‐induced vibration for the structure and improve the robust performance of the vibration control, based on semiactive vibration control devices and optimal control approach, a feedforward and feedback optimal vibration controller is designed, and an algorithm is presented for the vibration controller. Numerical simulation results are presented to illustrate the effectiveness of the proposed technique.

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Handle: RePEc:wly:jnlaaa:v:2014:y:2014:i:1:n:513530
DOI: 10.1155/2014/513530
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