| 用进化策略方法反演二维弹性波动方程的参数 |
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| 引用本文： | 孙维志,韩华. 用进化策略方法反演二维弹性波动方程的参数[J]. 计算物理, 2002, 19(6): 544-548 |
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| 作者姓名： | 孙维志 韩华 |
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| 作者单位： | 1. 吉林大学, 吉林长春 130026;2. 北方交通大学, 北京 100044 |
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| 摘 要： | 从材料响应的理论合成与实际测量数据相拟合出发,将二维弹性波动方程的参数反演问题归结为非线性多峰函数的最优化问题.全局最优解的求解采用了进化策略法,并同遗传方法的反演结果进行了比较.数值结果表明,用进化策略方法进行参数反演的精度大大高于用遗传方法进行参数反演的精度,进化策略反演是一种良好的非线性反演方法.
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| 关 键 词： | 进化策略 参数反演 遗传方法 |
| 文章编号： | 1001-246X(2002)06-0544-05 |
| 收稿时间： | 2001-08-13 |
| 修稿时间： | 2001-08-13 |
INVERSION OF PARAMETERS IN 2-D ELASTIC WAVE EQUATION USING EVOLUTION STRATEGY ALGORITHM |
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| SUN Wei-zhi,HAN Hua. INVERSION OF PARAMETERS IN 2-D ELASTIC WAVE EQUATION USING EVOLUTION STRATEGY ALGORITHM[J]. Chinese Journal of Computational Physics, 2002, 19(6): 544-548 |
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| Authors: | SUN Wei-zhi HAN Hua |
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| Affiliation: | 1. Jilin University, Changchun 130026, China;2. Northern Jiaotong University, Beijing 100044, China |
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| Abstract: | According to the principle that the computed response and the measured response should be fitted,the parameter inverse problem of 2-D elastic wave equation is reduced to an optimal problem of nonlinear multimode functions.The evolution strategy algorithm is used to search the global optimal solution and the inverse results are compared with those using genetic algorithm.Numerical simulations show that inversion accuracy obtained using evolution strategy algorithm is much higher than that obtained using genetic algorithm.The evolution strategy algorithm is an excellent nonlinear inversion method. |
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| Keywords: | evolution strategy algorithm parameter inverse genetic algorithm |
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