Ruijie ZHANG
,
Lei LI
,
Zhongwei CHEN
,
Zhi HE
,
Wanqi JIE
材料科学技术（英）
The Levenberg-Marquardt method, the best algorithm to obtain the least-square solution of nonlinear equations, is applied to calculate the stable phase equilibria. It can get the best combination between robustness and speed of the calculations. Its application to ternary Al-Si-Mg system is executed in detail. The calculated phase equilibria agree well with the experimental results. Furthermore, the Levenberg-Marquardt method is not sensitive to the initial values.
关键词:
Levenberg-Marquardt method
,
null
,
null
吕事桂
,
杨立
,
范春利
,
孙丰瑞
工程热物理学报
在对面红外检测条件下,利用混沌算法全局收敛和LM算法快速收敛的相对优势提出了识别试件内部矩形缺陷的混沌-LM混合算法,并引入了相对敏感系数的概念用于评估缺陷参数的定量可检测性,同时采用附加内置热电偶测温的方法弥补了红外测温信息的不足.通过数值实验证明了以上研究内容的有效性.
关键词:
红外检测
,
导热反问题
,
缺陷识别
,
混沌算法
,
Levenberg-Marquardt法
,
全局最优
