CAJ | 학술논문

基于多体动力学理论，通过ADAMS/CAR建立双横臂悬架的仿真模型。采用DOE试验设计方法对悬架模型进行优化，判断对悬架K&C特性影响较大的关键硬点。结合NSGA-Ⅱ遗传算法，利用ADAMS-ISIGHT联合仿真对硬点进行多目标优化，获得关键硬点的pareto最优解集。通过验证，结果表明，优化后的双横臂悬架在车轮跳动过程中，车轮前束角、外倾角和轮距变化范围更小，有利于减少轮胎磨损，提高汽车操纵稳定性。
기우다체동역학이론，통과ADAMS/CAR건립쌍횡비현가적방진모형。채용DOE시험설계방법대현가모형진행우화，판단대현가K&C특성영향교대적관건경점。결합NSGA-Ⅱ유전산법，이용ADAMS-ISIGHT연합방진대경점진행다목표우화，획득관건경점적pareto최우해집。통과험증，결과표명，우화후적쌍횡비현가재차륜도동과정중，차륜전속각、외경각화륜거변화범위경소，유리우감소륜태마손，제고기차조종은정성。
Based on the multi-body system dynamics theory, the model of the double wishbone independent suspension is built in adams/car software. The model of the double wishbone suspension is optimized by DOE design method. The key hard-point with a big influence on suspension K&C performance is judged. This paper uses the improved genetic algorithm NSGA-II and the joint simulation method of ADAMS and ISIGHT to solve hard point of multi-objective optimization problem, and obtains the Pareto diagram of the hard point. The experiment result shows that the values of toe angle, camber angle and wheel travel track are reduced. The optimized suspension is beneficial to decrease the tire wearing, and improve vehicle handing stability.