Abstract: Ride comfort optimization is an important aspect to improve vehicle performance. The ride comfort optimization system under composite working conditions is established based on the orthogonal experimental design in this paper. The comprehensive evaluation value of ride comfort, suspension parameters are selected as the optimization objectives and variables, the constraint conditions and factor levels are determined, and the test scheme is formulated. The simulation test research method is used to complete the ride comfort test under composite working conditions, and the primary and secondary relationship of different factors of suspension parameters on ride comfort are analyzed. The test results show that the composite working conditions can reflect the real driving state of the vehicle by considering the influence of road conditions and speed comprehensively. The optimal combination of suspension parameters can comprehensively improve vehicle ride comfort performance, the rationality and feasibility of the ride comfort optimization system are verified.

Key words: Ride comfort; Orthogonal experimental design; Comprehensive evaluation; Simulation test research method; Composite working conditions

摘要： 平顺性优化是提升车辆性能的重要途径。文章基于正交试验设计，建立复合工况下平 顺性优化体系。选择平顺性综合评价值和悬架参数作为优化目标和优化变量，确定约束条件 和因素水平，编制试验方案。采用仿真试验研究法，完成复合工况下的平顺性试验，分析悬 架参数不同因素水平对平顺性影响的主次关系。研究结果表明，复合工况能综合考虑路况条 件和车速影响，反映车辆真实行驶状态，悬架参数的最优组合使整车平顺性得到综合提升， 验证了平顺性优化体系的合理性和可行性。

关键词: 平顺性；正交试验设计；综合评价；仿真试验研究法；复合工况