单电机重度混合动力系统模式切换协调控制策略  

Coordination Control Strategy of Mode Transition for a Full Hybrid Electric Drivetrain with Single Motor

作　　者：杜波 秦大同[2] 刘永刚[2] 胡园园 DU Bo;QIN Da-tong;LIU Yong-gang;HU Yuan-yuan(Sichuan Special Equipment Inspection Institute Chengdu 610061;The State Key Laboratory of Mechanical Transmission,Chongqing University Shapingba Chongqing 400044)

机构地区：[1]四川省特种设备检验研究院,成都610061 [2]重庆大学机械传动国家重点实验室,重庆沙坪坝区400030

出　　处：《电子科技大学学报》2018年第5期793-800,共8页Journal of University of Electronic Science and Technology of China

基　　金：国家自然科学基金(51305468);四川省青年科技创新研究团队资助计划项目(2015TD0021);汽车工程四川省高校重点实验开放课题(szjj2014-069)

摘　　要：针对单电机重度混合动力系统纯电动驱动至混合驱动模式切换过程中出现纵向驾驶性能降低的问题,提出了一种分阶段的动力源与离合器协调控制策略。建立了面向控制的模式切换过程系统动力学模型,根据发动机和离合器的不同状态,将模式切换过程划分为4个阶段,基于前馈-反馈控制方法设计了分阶段的协调控制策略,用于调节动力源和离合器的转速转矩。仿真对比以及台架试验结果表明,所提出的协调控制策略能有效提高单电机重度混合动力系统的纵向驾驶性能,并能减小离合器磨损。The longitudinal drivability is degraded seriously when the full hybrid electric drivetrain with single motor switches from the pure electric drive mode to the hybrid drive mode.To address this problem,a phased coordination control strategy of power source and clutch is proposed in this paper.Firstly,a control-oriented dynamic model is established.And then,according to the operating status of engine and clutch,the whole mode transition process is divided into four stages.Based on the feed forward and feedback control method,the pashed coordination control strategy is designed to adjust the speed or torque of power source and clutch in each phase.Finally,the effectiveness of the control strategy is verified by simulation comparison and bench test.The proposed coordinated control strategy can effectively improve the longitudinal drivability of the full hybrid electric drivetrain with single motor during mode transition,and also can reduce the wear of the clutch.

关 键 词：协调控制策略 驾驶性能 前馈-反馈控制 重度混合动力系统 模式切换 

分 类 号：U469.7[机械工程—车辆工程]