基于双响应曲面法的稳健参数设计

针对焊膏印刷过程中,设计变量与输出质量特性间非线性关系难以获得的情况,提出了基于双响应曲面法的参数优化方法。以焊膏厚度均值及其方差作为优化目标,首先建立焊膏厚度均值及其方差与设计变量之间的响应曲面模型;其次,考虑焊膏厚度的波动,提出以置信度概念缩小设计区间,以提高设计结果的稳健性。最后,求解最优化模型,其最优解即为最佳参数组合。试验结果表明,采用所提出的方法,工序能力指数Cp从1.01提高到了1.52。

Robust Parameter Design Based on Dual Response Surface Method

Since the nonlinear relationship between the input and output was difficult to obtain in solder printing process,a robust parameter design method based on dual-response surface was proposed.In this paper,there were two objectives which were the mean and variance of solder thickness.First,the response surface models of the mean and variance of solder thickness were built.In order to improve the robustness of the design,the design area was then reduced according to the confidence level.At last,the model was s...