多目标同步优化设计法

对于不可计算性项目，通常用二步法进行参数、容差优化设计。该文通过选择新的指标体系，用正交试验来获取数据，以逐步搜索法得到好的参数搭配，再利用定理１中的样条函数，求得各因子的公差，从而完成了参数、容差同步优化。文末用实例阐述了此法，更有力地证明“多目标同步优化设计法”是有效的。

Cogradient optimizing design method with multi-objective

For projects that cannot be ealculated,the two-step method is usually used to realize pa-rameter and tolerance optimization, In this paper,we select a new index system,construct anorthogonal layout,get data from the orthogonal experiment,obtain a good parameter colloca-tion by successive seeking,and find the common difference of every factor by using the splinefunction in theorem l,which finishes the cogradient optimization for the parameter and toler-ance. Finatly we give a parameter and tolcrance optimizing desing example for an input trans-former,with which we ean show that the cogradicnt optimizing design method with multiob-objective is effective.