最优化方法在拟合正交系晶体弹性及压电系数中的应用

Application of Unconstrained Optimization in the datum Fitting for the Elastic Elastic and Piezoelectric Constants of Orthogonal Crystal

由布里渊散射实验可以得到晶体弹性及压电系数。本文介绍了最优化方法在拟合正交晶体弹性及压电系数中的应用 ,并对几种主要的最优化算法的稳定性、初值选取。

The elastic and piezoelectric constants of crystal can be obtained by Brillouin scattering. In this paper, the fitting method of unconstrained optimization is introduced. The key issues of stability of the algorithm, choice of initial parameters, and the analysis and evaluation of the results are discussed in details.