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In order to improve the control precision of electronic throttle, the extended state observer, which is used to estimate the change of throttle opening, is designed based on nonlinear model of electronic throttle. In addition, the sliding mode controller has been built through the Lyapunov theory based on the throttle error and differential of throttle error. Finally, the simulation is conducted and...
Cylinder pressure is an important parameter for engine combustion analysis and fault diagnosis. In order to improve the estimation precision and the tracking speed of cylinder pressure, the method of engine cylinder pressure estimation based on the robust sliding mode observer is proposed. On the basis of the establishment of the engine dynamic model, it designes the robust sliding mode observer....
Using observer to estimate cylinder pressure is significant for control and engine on-line diagnosis. Aiming to overcome the chattering phenomenon of sliding mode observer, a second-order sliding mode observer is designed based on the engine cylinder pressure model. And then part of the continuous observer injectors are designed to overcome the chattering problem and eliminate the error based on super-twisting...
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