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	无级变速器车辆经济性巡航策略的伪谱法优化
	徐少兵 ; 李升波 ; 成波 ; XU Shao-bing ; LI Sheng-bo ; CHENG Bo
	2016-03-30 ; 2016-03-30
关键词	经济性驾驶 巡航 伪谱法 最优控制 ECO-driving cruise pseudo-spectral method optimal control U471.23
其他题名	Optimization for economical cruising strategy of continuously variable transmission vehicle using pseudo-spectral method
中文摘要	汽车行驶过程中的油耗不仅同车辆自身性能相关,也取决于驾驶员的操作方式.本文研究了装备无级变速器和汽油发动机的车辆的经济性巡航策略.首先建立了车辆纵向动力学模型和发动机油耗模型,将经济性巡航策略的辨识构建为一个最优控制问题.该问题的性能函数呈现高阶非线性且存在凹弧段,是一个典型的奇异最优控制问题.因此采用Legendre伪谱法进行求解.结果显示:当平均巡航速度较低或较高时,应采取匀速(CS)行驶策略;当中速时,"加速滑行"(PnG)策略更为经济,相对匀速策略最大节油率达13%.最后探讨了PnG策略的节油机理、经济性与舒适性的关系.; The fuel consumption of passenger cars not only associates with their fuel-saving performance, but also depends on how they are driven. This paper investigates the economical cruising strategies for vehicles equipped with continuously variable transmission(CVT) and gasoline engine. A fuel optimized control problem is formulated after building models for vehicle longitudinal dynamics and engine fuel consumption. This is a typical singular optimal control problem with a nonstrictly convex cost function, so the Legendre pseudo-spectral method is selected to obtain its optimal solutions. The results show that vehicles should cruise at a constant speed(CS) when the average speed is either low or high; while the ‘pulse-and-gliding'(PnG) strategy becomes more economical when the average speed is medium, the maximum fuel saving of PnG is 13% higher than that of the CS strategy. For the PnG strategy, the fuel-saving mechanism and the relationship between fuel economy and driving comfort are also explained.
语种	中文 ; 中文
内容类型	期刊论文
源URL	[http://ir.lib.tsinghua.edu.cn/ir/item.do?handle=123456789/144759]
专题	清华大学
推荐引用方式 GB/T 7714	徐少兵,李升波,成波,等. 无级变速器车辆经济性巡航策略的伪谱法优化[J],2016, 2016.
APA	徐少兵,李升波,成波,XU Shao-bing,LI Sheng-bo,&CHENG Bo.(2016).无级变速器车辆经济性巡航策略的伪谱法优化..
MLA	徐少兵,et al."无级变速器车辆经济性巡航策略的伪谱法优化".(2016).

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