以螺旋弹簧的给定刚度变化最小、自振频率最大和质量最小为设计目标,综合考虑优化设计中的随机因素,建立了基于稳健性的多目标优化模型,并在科学计算语言MATLAB中编程求解.通过液压阀螺旋弹簧设计实例的分析说明,多目标稳健优化设计提高了设计目标的稳健性,一定程度上提升了液压阀的动态响应特性. Taking the minimum change of given stiffness, the maximum natural frequency and the minimum mass of the helical spring as the design targets, a multi-objective optimization model based on robustness is established considering the random factors in the optimization design. The programming model is solved in scientific computational language MATLAB The analysis of the design example of the hydraulic valve coil spring shows that the robust optimization of the multi - objective design improves the robustness of the design objective and enhances the dynamic response characteristics of the hydraulic valve to a certain extent.