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考虑可靠性等约束条件，以气门弹簧质量最轻、刚度误差最小为优化设计目标，用线性加权组合法对多目标优化设计模型进行求解，采用模糊学方法对加权系数进行模糊评判，求出最优加权系数。该方法有效而实用，对求解多目标优化设计问题具有实用意义。
Considering the constraints such as reliability and so on, the multi-objective optimal design model is solved by the linear weighted combination method based on the lightest valve spring and the minimum stiffness error. The fuzzy coefficient is used to evaluate the fuzzy coefficient by the fuzzy method, Excellent weight coefficient. The method is effective and practical, and has practical significance for solving multi-objective optimization design problems.