摘要
In parallel hybrid electrical vehicle （PHEV） equipped with automatic mechanical transmission （AMT）, the driving smoothness and the clutch abrasion are the primary considerations for powertrain control during gearshift and clutch operation. To improve these performance indexes of PHEV, a coordinated control system is proposed through the analyzing of HEV powertrain dynamic characteristics. Using the method of minimum principle, the input torque of transmission is optimized to improve the driving smoothness of vehicle. Using the methods of fuzzy logic and fuzzy-PID, the engaging speed of clutch and the throttle opening of engine are manipulated to ensure the smoothness of clutch engagement and reduce the abrasion of clutch friction plates. The motor provides the difference between the required input torque of transmission and the torque transmitted through clutch plates. Results of simulation and experiments show that the proposed control strategy performs better than the contrastive control system, the smoothness of driving and the abrasion of clutch can be improved simultaneously.
In parallel hybrid electrical vehicle （PHEV） equipped with automatic mechanical transmission （AMT）, the driving smoothness and the clutch abrasion are the primary considerations for powertrain control during gearshift and clutch operation. To improve these performance indexes of PHEV, a coordinated control system is proposed through the analyzing of HEV powertrain dynamic characteristics. Using the method of minimum principle, the input torque of transmission is optimized to improve the driving smoothness of vehicle. Using the methods of fuzzy logic and fuzzy-PID, the engaging speed of clutch and the throttle opening of engine are manipulated to ensure the smoothness of clutch engagement and reduce the abrasion of clutch friction plates. The motor provides the difference between the required input torque of transmission and the torque transmitted through clutch plates. Results of simulation and experiments show that the proposed control strategy performs better than the contrastive control system, the smoothness of driving and the abrasion of clutch can be improved simultaneously.
基金
This project is supported by National Hi-tech Research and Development Program of China (863 Program, No. 2001AA501200, 2003AA501200).
作者简介
GU Yanchun is curie tly a PhD candidate in Shanghai Jiaotong University, China. His research interests include hybrid electric vehicle, automatic mechanical transmission, electrical control of powetrain, etc. Tel： ＋86-21-62933178; E-mail： guyanchun@sjto.edu.cnYIN Chengliang is currently a professor in School of Mechanical Engineering, Shanghai Jiaotong University, China. His research interests include vehicle electronics and control, electric cars and hybrid electric vehicles. Tel： ＋8621-54744742; E-mail： clyin1965@sjtu.edu.cnZHANG Jianwu received his PhD degree from Shanghai Jiaotong University, China, in 1984 and he is now a chair professor in ShanghAi Jiaotong University, China. His research interests are in areas of vehicle systems dynamics and control, electric vehicles and electronic control technology and special vehicles. Tel： ＋86-21-62933772; E-mail： jwuzhang@sjtu.edu.cn
