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推导了带平衡悬架三轴商用车的平顺性和操纵稳定性运动方程,采用半车模型分析平顺性,采用三自由度模型分析操纵稳定性.选取10个优化变量,并运用社区培养遗传算法(NCGA)对各模型进行了多目标优化,用蛛网图法将10个Pareto有效解直观地表示出来.根据目标极值法、目标均衡法、理想值法、单目标最优法这4种不同的设计需求标准,从10个Pareto有效解中筛选出4种不同的优化方案,有效地提高了整车的平顺性和操纵稳定性.
This paper deduces the ride comfort and steering stability equations of a three-axle commercial vehicle with balanced suspension, analyzes the ride comfort by half-car model, and analyzes the steering stability by three-degree-of-freedom model.Optimization variables are selected and optimized by community-based genetic algorithm (NCGA), the Pareto efficient solutions are intuitively represented by the spider diagram method.According to the target extreme value method, the target equilibrium method, the ideal value method, the single-objective optimal method, these four different According to the design requirements, four different optimization schemes were selected from 10 Pareto efficient solutions, which effectively improved the ride comfort and handling stability.