Fuzzy sliding-mode control of the electronic throttle system

Electronic throttle is a DC-motor-driven valve that regulates air inflow into the vehicle´s combustion system in modern automobiles. Electronic throttle system has the nonlinear dynamical characteristics, and it is difficult to be controlled with the satisfactory performance by the traditional PID control strategy. A fuzzy sliding-mode control method is proposed for the electronic throttle in this paper. At first, based on the dynamical model of the electronic throttle, sliding-mode controller is designed. The sliding-mode controller is composed of the equivalent control term and the switching control term. The fuzzy logic system is adopted to determine the gain of the switching control term. Therefore, the chattering of the controller is weakened. Finally, a computer simulation is performed, and simulation results verify that the proposed control method has the satisfactory control performance.