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Nonlinear Observer-based Torque Control for SI Engine
Munan Hong,Tielong Shen,Minggao Ouyang 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
In this paper, a nonlinear torque observer for Spark Ignition(SI) engine is proposed and a torque control method based on the observer is presented. In the observer, a torque production model is employed to give the nominal value of torque estimation. Then, using the rotational dynamice quation of the crank shaft, a nonlinear adjusting law is added to correct the nominal estimation. The proposed observer isused to realize closed loop torque control, where the torque demand is given by solving an optimal speed tracking problem. To demon strate the observer and torque controller, experimental results are shown finally.