Adaptive prescribed performance servo control of an automotive electronic throttle system with actuator constraint

Abstract

To further improve the transient and steady-state performance of automotive electronic throttle positiontracking, in this paper an adaptive prescribed performance servo control strategy is designed and applied to a realelectronic throttle control system. In view of the possible high gain of the prescribed performance controller in practice,the actuator constraint is also considered in the controller design. The designed servo controller can ensure the transientand steady-state responses of tracking error are limited in the range prescribed by the performance function, and convergewith the prescribed convergence rate and have no overshoot. The incorporated adaptive updating law can enhance therobustness of the transient and steady-state performance against uncertainty from the product tolerance, the operatingconditions, and the aging of components. Both Matlab/Simulink simulation and dSPACE-based hardware-in-the-loopexperimental verification show the effectiveness and applicability of the proposed control strategy.