Torque observer design for gasoline engines using feedback linearization

In this paper, a control-oriented model of four-cylinder spark ignition gasoline engine is established based on physical model and map which is commonly used in engineering such as the volumetric efficiency map, friction torque map etc. Based on this, a torque observer is deduced using feedback linearization theory, In the observer, to thereby obtain the actual engine torque. While using input to state stability theory, the robust stability of the closed-loop error system, and thus the use of the linear system theory The guiding principles of control parameters selected. Finally, through simulation offline simulation and enDYNA model validation The estimated effectiveness of the algorithm.