期刊论文

Optimization of Shifting Schedule for Vehicle with Automated Mechanical Transmission

中文

计算机仿真

1006-9348

2016

33

4

227-231

10.3969/j.issn.1006-9348.2016.04.048

湖南省自然科学基金项目（14JJ5014）；

本校为第一机构

研究电控机械式自动变速器(AMT)换挡过程过程优化,可减少油耗。由于换挡为加速或减速的动态过程,非线性程度高,时变性强,而传统换挡规律难以正确反映驾驶员意图,易造成频繁换挡和循环换挡,影响汽车燃油经济性的问题,提出一种采用动态规划的优化算法。以整个循环工况内汽车燃油消耗最小为优化目标,发动机转速和变速器挡位作为状态变量,利用动态规划算法制定换挡规律,运用CRUISE软件建立AMT整车仿真模型,在UDC城市循环工况下进行仿真验证。仿真结果表明,动态规划算法的换挡规律发动机转速波动减小,换挡频率明显降低,汽车燃油经济性有明显提高,验证了优化算法的准确性与合理性,为换挡规律的研究提供...

The shift process of automated mechanical transmission （AMT） is a dynamic process of acceleration and deceleration with highly nonlinear and time - varying caricteristics, traditional shifting schedule is difficult to reflect the driver＇s intentions, which may cause frequent shift and cyclic shift, affect the vehicle＇s fuel economy. For this reason, a dynamic programming algorithm for AMT shifting schedule is proposed. By taking the minimum driving cycle of vehicle＇s fuel economy as the objective function, the engine speed and the transmis...