汽车工程

汽车工程 ›› 2018, Vol. 40 ›› Issue (5): 542-546.doi: 10.19562/j.chinasae.qcgc.2018.05.007

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智能车辆换道行驶的经济车速研究

  

  • 出版日期:2018-05-25 发布日期:2018-05-25

A Study on Economic Speed in Lanechange Maneuvers of Intelligent Vehicles

  • Online:2018-05-25 Published:2018-05-25

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摘要： 本文旨在实现智能车辆在换道过程中经济车速规划。基于瞬态燃油消耗模型、车辆动力学模型和换道过程中道路曲率信息，利用动态规划算法求得车辆在换道过程中的经济车速轨迹。Matlab/Simulink与CarSim联合仿真结果表明，与定速巡航算法相比，动态规划算法可节油8%左右。采用所提出的方法可在保证智能车辆安全行驶的基础上，提升其燃油经济性能，为智能车辆换道的速度控制提供决策依据。

关键词: 智能车辆, 换道行驶, 经济车速, 油耗模型, 动态规划

Abstract: This paper aims at realizing economic speed programming in the lanechange process of intelligent vehicles. Based on transient fuel consumption model, vehicle dynamics model and the road curvature information in the process of lanechange, the trajectory of vehicle with economic speed is obtained by using dynamic programming algorithm. The results of Matlab/Simulink and CarSim cosimulation show that compared with cruise control algorithm, dynamic programming algorithm can reduce fuel consumption by around 8%. The adoption of the technique proposed can enhance fuel economy while assuring the safe driving of intelligent vehicle, providing the decisionmaking basis of speed control in the lanechange process of intelligent vehicles.

Key words:  intelligent vehicle, lane change maneuvers, economic speed, fuel consumption model, dynamic programming