Wheel slip control for antispin acceleration via dynamic spark advance

One of the problems that might occur during acceleration is wheel spin. Whi le the wheels are spinning, the driving force on the tires reduces consider ably and the vehicle cannot speed up as desired. It may even become very di fficult to control the vehicle under these conditions. The acceleration cha racteristics of a vehicle can be improved without changing its physical cap abilities with a suitable engine control algorithm that has no additional s ensor inputs. This paper presents several control strategies for the wheel slip control problem. The torque output of an engine is modulated to preven t the wheel spin caused by rapid increases in the throttle input. The spark time is varied dynamically to adjust the engine torque and therefore the p roblem is often referred to as dynamic spark advance (DSA). Variable struct ure control theory is used for the controller design purposes and simulatio n results are provided. (C) 2000 Elsevier Science Ltd. All rights reserved.