CAJ | 학술논문

为了提高并联式混合动力汽车动力总成五点悬置系统的隔振性能，建立了动力总成五点悬置的动力学模型，以动力总成六自由度能量解耦与固有频率的合理分配为优化目标，五个悬置点的各向刚度为设计变量，采用遗传算法对悬置系统进行优化。应用上述方法对某并联式柴电混合动力汽车悬置系统进行了优化，动力学仿真与实车试验结果表明，悬置优化后消除了整车怠速工况时方向盘抖动，验证了所提方法的合理性。同时，遗传算法克服了序列二次型规划算法（SQP）易收敛于局部最优解的缺点，得到的悬置系统解耦性能优良，优化结果稳定可靠。
위료제고병련식혼합동력기차동력총성오점현치계통적격진성능，건립료동력총성오점현치적동역학모형，이동력총성륙자유도능량해우여고유빈솔적합리분배위우화목표，오개현치점적각향강도위설계변량，채용유전산법대현치계통진행우화。응용상술방법대모병련식시전혼합동력기차현치계통진행료우화，동역학방진여실차시험결과표명，현치우화후소제료정차태속공황시방향반두동，험증료소제방법적합이성。동시，유전산법극복료서렬이차형규화산법（SQP）역수렴우국부최우해적결점，득도적현치계통해우성능우량，우화결과은정가고。
A method to optimize a powertrain mounting system was developed to improve the vibration isolation performance of the mounting system for a parallel hybrid electric vehicle.The optimization was based on the genetic algorithm by taking 6-DOF energy decoupling of the powertrain mounting system and the reasonable allocation of the natural frequencies as the objectives,and taking the stiffnesses of 5 mounting points as the design variables.This method was applied to deal with the shaking of steering wheel for a parallel hybrid electric vehicle in its idling process.The results of dynamic simulation verified the effectiveness of the method.Furthermore,it was shown that compared to the sequential quadratic programming (SQP),the genetic algorithm overcomes its shortcoming of converging to local optimal solution, the decoupling features of the mounting system obtained from the optimization are better and reliable.