Application of the state-space model to the system of wave energy conversion I. Improvement on numerical methods

ZHENG Yong-hong; DENG You-jun; YOU Ya-ge; SHEN Yong-ming

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ZHENG Yong-hong, DENG You-jun, YOU Ya-ge, SHEN Yong-ming. Application of the state-space model to the system of wave energy conversion I. Improvement on numerical methods[J]. Haiyang Xuebao, 2003, 25(6): 126-134.

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Application of the state-space model to the system of wave energy conversion I. Improvement on numerical methods

1.
Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510070, China
2.
State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116023, China

Received Date: 2002-03-23
Rev Recd Date: 2002-08-19

Abstract

Abstract

The state-space model is one of the effective mathematical models to study the interaction between ocean waves and the wave energy conversion system.One of the key aspects of the application of the model is how to efficiently obtain the matrix parameters of the model according to the experimental data or the computed values of the impulse response function.In combination with the simplex method, the least square method and a simplified method for the matrix exponential, an effectively numerical method is proposed to determine the parameters in the state space model.The numer ical tests show that the range for the initial values of matrix parameters is enlarged very much, the numerical simulation efficiency is increased effectively and the numerical results are high accuracy.The reason lies in that the present method over comes the shortcomings of local convergence and the requirement for solving the derivatives of matrix exponential relative to parameters of Gauss-Newton method.
- state-space model,
- numerical method,
- wave energy conversion system

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References(7)

References

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