Adaptive pulse control of electronic throttle

Precise control of electronic throttle is critical to driveability, fuel economy and emission performance of present day passenger vehicles. Due to cost, material and packaging constraints, the throttle open-loop dynamics may be fairly complex, exhibiting substantial nonlinearities among which friction plays a prominent role. In this paper, a dynamic model for an electronic throttle is developed, based on a dynamic LuGre model to represent friction effects. An adaptive pulse controller is applied to achieve accurate throttle positioning.