摘要
提出一种混联式混合动力车的控制系统,它在结构上有以下特点:双电动机方案、动力在自动变速箱后端耦合、基于CAN网络的整车控制系统。在能量管理策略方面采用基于最优动力系统效率的优化ICE曲线控制策略,用“九点定义法”确定驱动需求转矩,在自动变速换挡过程中的采用动力协调控制策略,并在制动能量回收控制中考虑了滑行制动和强制制动两种控制模式。在此基础上开发多能源动力控制系统,并进行硬件在环仿真测试和实车匹配调试。实车测试结果表明,该多能源动力总成控制器能有效地实现对多能源动力的控制,使车辆的经济性和动力性都有很大提高。
The powertrain of the parallel-series hybrid electric vehicle（PSHEV） is discussed for its features of dual-motor structure in which powers from the engine and the tractive motor are coupled at the output shaR of the transmission instead of the input shaR. Control strategies based on ICE optimal operating schedule are utilized to improve the powertrain efficiency and reduce fuel consumption. To identify the power demand of the driver, a new ＂nine-point-definition method＂ is proposed. Special attention is given to the combination control of different power sources during gear shifting. Regenerative braking is divided into the braking mode and the coasting mode and different control methods are applied for each mode. A hybrid powertrain controller （HCU） based on CAN network is developed to implement these strategies, which is proved to be able to work efficiently and stably by hardware-in-loop experiment and on-board test. Test results show that under the coordination of HCU the vehicle achieves 35% reduction in fuel consumption and improvement in acceleration performance.
出处
《机械工程学报》
EI
CAS
CSCD
北大核心
2007年第4期125-131,共7页
Journal of Mechanical Engineering
基金
国家高技术研究发展计划资助项目(863计划
2005AA501323)。
关键词
混联式混合动力车
多能源动力控制系统
控制策略
换挡协调控制
Parallel-series hybrid electric vehicle Hybrid powertrain controller Control strategy Gear shift combination control
