Robust adaptive position control of automotive electronic throttle valve using PID-type sliding mode technique

In this paper, a robust adaptive position controller is proposed for vehicle electronic throttle (ET) valve systems. In comparison with the traditional throttle control schemes, we develop an adaptive sliding mode control for the purpose of eliminating the influences of the parametric uncertainties and nonlinearities, which involve friction, gear backlash, and return spring limp-home. It is shown in this paper that not only the uncertainty bound but also the control gains are online estimated by the adaptive laws, and thus their bound information is no longer required, which ensures a robust tracking performance. Simulation results demonstrate the excellent tracking performance of the proposed control in terms of transient and steady-state performance.