面向多约束的可举升复合油气悬架偏频优化

Frequency Optimization of the Lifting Composite Hydro-pneumatic Suspension with Multi-constraints

以空、满载状态下悬架偏频及空满载等频性作为平顺性评价指标,分析了可举升复合油气悬架结构参数对整车性能的影响.针对某军车可举升复合油气悬架结构参数与整车性能的匹配与优化进行了研究,以空、满载悬架偏频的平方和与空、满载悬架偏频差值的乘积为目标函数,以复合油气悬架结构参数为设计变量,以悬架边界条件,承载状况等为约束条件进行了优化计算,最后得出可举升复合油气悬架合理的参数匹配,既满足了设计要求,又能最大限度地提高整车平顺性.

The influence of the structure parameters of the lifting composite hydro-pneumatic suspension on vehicle performance was analyzed by taking the suspension frequencies under basic load, maximum load and the difference between them as the evaluation indexes. A matching and optimization of the structure parameters of the composite hydro-pneumatic suspension of a vehicle was then investigated. The optimization was carried out by taking the suspension boundaries and loading status as the constraints, the product of the quadratic sum of the suspension frequencies at basic load and maximum load and the difference between the two frequencies as the objective functions, and the structure parameters of the lifting composite hydro-pneumatic suspension as design variables. Finally, an appropriate set of structure parameters of the lifting composite hydro-pneumatic suspension was obtained, which will meet both the design constraints and the requirements of ride performance.