非线性偏最小二乘回归法在均匀设计响应面法中的应用

doi:CNKI:11-1929/V.20120216.1433.008

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非线性偏最小二乘回归法在均匀设计响应面法中的应用

赵威, 王伟

哈尔滨工业大学土木工程学院, 黑龙江哈尔滨 150090

收稿日期:2011-11-01 修回日期:2011-12-01 出版日期:2012-05-25 发布日期:2012-05-24
通讯作者: 王伟,Tel.: 0451-86282075 E-mail: wwang@hit.edu.cn E-mail:wwang@hit.edu.cn

Application of Non-linear Partial Least Squares Regression Method to Response Surface Method with Uniform Design

ZHAO Wei, WANG Wei

School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China

Received:2011-11-01 Revised:2011-12-01 Online:2012-05-25 Published:2012-05-24

摘要/Abstract

摘要： 针对目前多维变量可靠度分析中广泛应用的均匀设计响应面法(RSM),指出了使用最小二乘(LS)法拟合拟线性回归模型时存在的局限性,并提出采用拟线性偏最小二乘(PLS)法来回归响应面系数。由于拟线性回归法限制了模型的形式,精度提高有限,结果也很不稳定,因此又提出用基于样条变换的偏最小二乘回归模型代替拟线性回归模型并用于结构失效概率的计算,既能处理最小二乘法无法解决的变量间多重相关性的问题,又能避开拟线性回归中预先对模型形式的假定。通过算例验证了基于样条变换的偏最小二乘法的适用性和有效性,尤其对于多维变量非线性程度较高的可靠度分析,与普通最小二乘法拟合的响应面相比,其模型更加精确,失效概率精度更高。

关键词: 偏最小二乘法, 响应面法, 样条变换, 均匀设计, 结构可靠度

Abstract: The response surface method (RSM) with uniform design is widely used for current structural reliability analysis of multi-dimensional variables. However, it has the limitation of fitting the regression models in the original quasi-linear least squares (LS) method. To deal with this limitation, a new approach—the partial least squares (PLS) method based on the traditional method is proposed for improvement. However, the quasi-linear regression method restricts the form of the model, thus the improvement in accuracy is limited and the result is unstable. So, this paper presents a partial least squares regression model to substitute the quasi-linear model for the calculation of reliability, which not only handles the correlation between the variables but also avoids the pre-assumptions for the form of the regression model. The results of several examples show that the method proposed in this paper can be used effectively to analyze structural reliability, especially in multi-dimensional and non-linear cases, and higher accuracy can be obtained as shown by comparing the results with those from the least squares regression method.

Key words: partial least squares method, response surface method, spline transform, uniform design, structural reliability

中图分类号:

V215.7
TU13

赵威, 王伟. 非线性偏最小二乘回归法在均匀设计响应面法中的应用 [J]. 航空学报, 2012, (5): 839-847.

ZHAO Wei, WANG Wei. Application of Non-linear Partial Least Squares Regression Method to Response Surface Method with Uniform Design[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2012, (5): 839-847.

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非线性偏最小二乘回归法在均匀设计响应面法中的应用

Application of Non-linear Partial Least Squares Regression Method to Response Surface Method with Uniform Design

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