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根据影响产品质量的因素，讨论了质量设计的准则和设计解的稳健性，并利用随机建模原理提出一种工程稳健设计的新方法．该方法与一般稳健设计不同的是，通过同时调整设计参数与控制其容差来达到稳健设计的最优解．数值分析表明，该方法是十分有效的．
According to the factors affecting product quality, the criteria of quality design and the robustness of design solutions are discussed. And a new method of robust design is proposed based on stochastic modeling principle. The difference between this method and the general robust design is that it achieves the optimal solution of the robust design by adjusting the design parameters and controlling the tolerances at the same time. Numerical analysis shows that this method is very effective.