Transportation-cyber-physical-systems-oriented engine cylinder pressure estimation using high gain observer  

作　　者：李永福 寇晓培 郑太雄 李银国 

机构地区：[1]Center for Automotive Electronics and Embedded System, College of Automation, Chongqing University of Posts and Telecommunications

出　　处：《Chinese Physics B》2015年第5期621-626,共6页中国物理B（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant No.61304197);the Scientific and Technological Talents of Chongqing,China(Grant No.cstc2014kjrc-qnrc30002);the Key Project of Application and Development of Chongqing,China(Grant No.cstc2014yykf B40001);the Natural Science Funds of Chongqing,China(Grant No.cstc2014jcyj A60003);the Doctoral Start-up Funds of Chongqing University of Posts and Telecommunications,China(Grant No.A2012-26)

摘　　要：In transportation cyber-physical-systems （T-CPS）, vehicle-to-vehicle （V2V） communications play an important role in the coordination between individual vehicles as well as between vehicles and the roadside infrastructures, and engine cylinder pressure is significant for engine diagnosis on-line and torque control within the information exchange process under V2V communications. However, the parametric uncertainties caused from measurement noise in T-CPS lead to the dynamic performance deterioration of the engine cylinder pressure estimation. Considering the high accuracy requirement under V2V communications, a high gain observer based on the engine dynamic model is designed to improve the accuracy of pressure estimation. Then, the analyses about convergence, converge speed and stability of the corresponding error model are conducted using the Laplace and Lyapunov method. Finally, results from combination of Simulink with GT- Power based numerical experiments and comparisons demonstrate the effectiveness of the proposed approach with respect to robustness and accuracy.In transportation cyber-physical-systems （T-CPS）, vehicle-to-vehicle （V2V） communications play an important role in the coordination between individual vehicles as well as between vehicles and the roadside infrastructures, and engine cylinder pressure is significant for engine diagnosis on-line and torque control within the information exchange process under V2V communications. However, the parametric uncertainties caused from measurement noise in T-CPS lead to the dynamic performance deterioration of the engine cylinder pressure estimation. Considering the high accuracy requirement under V2V communications, a high gain observer based on the engine dynamic model is designed to improve the accuracy of pressure estimation. Then, the analyses about convergence, converge speed and stability of the corresponding error model are conducted using the Laplace and Lyapunov method. Finally, results from combination of Simulink with GT- Power based numerical experiments and comparisons demonstrate the effectiveness of the proposed approach with respect to robustness and accuracy.

关 键 词：transportation cyber-physical-systems high gain observer cylinder pressure estimation vehicle- to-vehicle communications 

分 类 号：U463.6[机械工程—车辆工程]