摘要
混合动力汽车(hybrid electric vehicle,HEV)发动机启停过程伴随的转矩脉动,易诱发车辆传动系扭振,导致车辆动力不平顺。为解决上述问题,提出并验证基于电磁阻尼自适应模糊控制的传动系扭振主动控制方法。建立行星混联式混合动力汽车发动机启停工况动力学仿真模型和发动机启停控制逻辑,提出发动机启停扭振自适应模糊控制策略,开展2种运行状态下发动机启停工况仿真,对比分析无控制和自适应模糊控制下传动系扭转振动响应曲线。结果表明,自适应模糊控制相比无控制状态:定置停车时发动机启动和停机工况扭振平均衰减率分别为23.8%和30.1%,车辆行进间发动机启动和停机工况扭振平均衰减率分别为12.1%和23.6%。该方法可有效衰减发动机启停工况传动系扭转振动,提升混合动力汽车发动机启停工况NVH(noise,vibration,and harshness)性能。
The starting and stopping process of a hybrid electric vehicle engine often results in torque ripple,leading to torsional vibrations in the vehicle’s powertrain system and causing irregular vehicle power delivery.To solve these problems,an active control method for torsional vibrations based on active control of electromagnetic damping torque of the motor is proposed.Firstly,a dynamic simulation model and engine start-stop control logic under engine start-stop condition is established.Additionally,an adaptive fuzzy control strategy for engine startstop torsional vibration is proposed.Finally,the simulation model is used to simulate the engine starting and stopping conditions under two driving conditions of the vehicle.The torsional vibration response curves of the driveline under the proposed control method and without any control are compared and analyzed. The resultsshow that the average torsional vibration attenuation rates achieved by the proposed method are 23.8% and 30.1%,respectively, during stationary stop engine conditions, compared to the uncontrolled state. Moreover, the averageattenuation rate of torsional vibration under the starting-stopping conditions during vehicle travel is 12.1% and23.6%, respectively. This proposed method effectively attenuates the torsional vibrations of the driveline duringengine starting and stopping conditions, thereby improving the NVH (noise, vibration, and harshness)performance of the hybrid electric vehicle during these operational states.
作者
陈龙
陶磊
CHEN Long;TAO lei(College of Mechanical and Vehicle Engineering,Taiyuan University of Technology,Taiyuan 030024,P.R.China;State Key Laboratory of Automotive Simulation and Control,Jilin University,Changchun 130025,P.R.China)
出处
《重庆大学学报》
CAS
CSCD
北大核心
2024年第1期104-114,共11页
Journal of Chongqing University
基金
国家重点研发计划资助项目(2020YFB1314001)
汽车仿真与控制国家重点实验室开放基金项目(20210218)
山西省重点研发计划项目(2022ZDYF019)
山西省基础研究计划(自由探索类)项目(20210302124119)
山西省高等学校科技创新计划项目(2021L085)。
关键词
行星混联传动系
启停工况
扭转振动
主动控制
自适应模糊控制
planetary hybrid powertrains
start-stop conditions
torsional vibration
active control
adaptive fuzzy control
