48V微混HEV BOOST模式转矩瞬态优化控制  

Torque Transient Optimal Control in Boost Mode of 48V Micro Hybrid Electric Vehicle

作　　者：赵治国[1] 杨云云[1] 何露[1] 吴朝春 

机构地区：[1]同济大学新能源汽车工程中心

出　　处：《汽车技术》2015年第7期46-51,共6页Automobile Technology

基　　金：国家自然科学基金资助项目(51275355)

摘　　要：为解决48 V微混混合动力轿车在急加速工况下发动机排放恶化和瞬态转矩响应量不足的问题,利用配备BRM(启动电机)的48 V微混HEV动力系统可短时工作于BOOST模式的优势,开发了急加速工况下的双动力源转矩协调控制策略,并基于模糊控制器实时优化了发动机输出转矩。通过仿真试验表明,所提出的BOOST模式控制策略可较好地识别驾驶员不同的急加速请求意愿,实时决策出的发动机转矩可满足转矩请求并优化发动机排放性能。To solve the problem of deteriorative emission and insufficient torque transient response of engine in rapid acceleration of 48V micro hybrid electrical vehicle, dual-power source torque coordination ＆ control strategy is developed in rapid acceleration and engine output torque is optimized in real-time based on fuzzy controller, by taking advantages of 48V micro hybrid electric vehicle equipped with BRM （start motor）, which can operate in BOOST mode for a short period. Simulation results show that the proposed control strategy in boost mode can recognize different rapid acceleration requests, the determined engine torque in real-time can fulfill the driver＇s torque request and optimize engine emission performance.

关 键 词：48V微混HEV BOOST模式 发动机转矩 瞬态优化控制 

分 类 号：U462.3[机械工程—车辆工程]