求解非线性反问题的大范围收敛梯度正则算法

IMECH-IR > 力学所知识产出(1956-2008)

	求解非线性反问题的大范围收敛梯度正则算法
	崔凯; 李兴斯; 李宝元; 杨国伟
Source Publication	计算力学学报
	2005
Volume	22 Issue:4 Pages:415-419
ISSN	1007-4708
Abstract	基于同伦映射的思想,改进了求解非线性反问题的梯度正则化算法.通过路径跟踪有效地拓宽了梯度正则化算法求解的收敛范围.对于正则化参数的修正,通过引入拟Sigmoid函数,提出了一种下降速率可调的连续化参数修正方法,在保证迭代稳定的条件下,得到较好的计算效率,同时保证该算法具有很好的抵抗观测噪声能力.实际算例表明,该方法收敛范围宽,计算效率高,在存在较强观测噪声的条件下也能得到很好的反演结果.
Subject Area	力学
Indexed By	EI
Document Type	期刊论文
Identifier	http://dspace.imech.ac.cn/handle/311007/15712
Collection	力学所知识产出(1956-2008)
Recommended Citation GB/T 7714	崔凯,李兴斯,李宝元,等. 求解非线性反问题的大范围收敛梯度正则算法[J]. 计算力学学报,2005,22,4,:415-419.
APA	崔凯,李兴斯,李宝元,&杨国伟.(2005).求解非线性反问题的大范围收敛梯度正则算法.计算力学学报,22(4),415-419.
MLA	崔凯,et al."求解非线性反问题的大范围收敛梯度正则算法".计算力学学报 22.4(2005):415-419.

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