Wind and Structures

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Inverse active wind load inputs estimation of the multilayer shearing stress structure

  • Chen, Tsung-Chien (Department of Power Vehicle and Systems Engineering, Chung Cheng Institute of Technology, National Defense University) ;
  • Lee, Ming-Hui (Department of Power Vehicle and Systems Engineering, Chung Cheng Institute of Technology, National Defense University)
  • Received : 2007.02.12
  • Accepted : 2008.01.24
  • Published : 2008.02.25
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Abstract

This research investigates the adaptive input estimation method applied to the multilayer shearing stress structure. This method is to estimate the values of wind load inputs by analyzing the active reaction of the system. The Kalman filter without the input term and the adaptive weighted recursive least square estimator are two main portions of this method. The innovation vector can be produced by the Kalman filter, and be applied to the adaptive weighted recursive least square estimator to estimate the wind load input over time. This combined method can effectively estimate the wind loads to the structure system to enhance the reliability of the system active performance analysis. The forms of the simulated inputs (loads) in this paper include the periodic sinusoidal wave, the decaying exponent, the random combination of the sinusoidal wave and the decaying exponent, etc. The active reaction computed plus the simulation error is regard as the simulated measurement and is applied to the input estimation algorithm to implement the numerical simulation of the inverse input estimation process. The availability and the precision of the input estimation method proposed in this research can be verified by comparing the actual value and the one obtained by numerical simulation.

Keywords

References

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