摘要
针对新型战术车辆的液力自动变速器设计了两参数动力性换挡规律,并用MATLAB/Simulink建立整车模型进行仿真.为了提高车辆的动力性,提出以0～30 km/h加速时间为优化目标,应用遗传算法对换挡点进行优化.仿真分析结果表明:优化后的换挡规律能有效提高车辆的动力性.除此之外,引入加速度参数设计动态特性的换挡规律,制定模糊控制器来修正换挡点后,三参数的换挡规律动力性又进一步得到提升.
A two-parameter dynamic shift schedule is designed for new tactical vehicle's automatic transmission,and the whole model is established by using MATLAB/Simulink to simulate and verify.In order to improve the dynamic performance of the vehicle,a genetic algorithm is proposed to optimize the shift point with the acceleration time of 0～30 km/h as the optimization objective.The simulation results show that the optimized shift schedule can effectively improve the dynamic performane of the vehicle through the simulation and comparative analysis of the model.In addition,the dynamic shift law of acceleration parameters is introduced,and a fuzzy controller is developed to modify the shift point,as a result,the dynamic shift schedule of three parameters has been more improved.
引文
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