On Electronic Throttle Valve Control System Based Observers

In this paper, two PID conventional controllers of an Electronic Throttle Valve (ETV), based observers, are developed to estimate the opening angle of the electronic throttle, to compensate unexpected external disturbances and to detect sensor or system faults. The first approach is based on the use of a Luenberger Observer (LO) in order to detect the occurrence and to localize faults using residual values and the second one on the use of Unknown Input Observer (UIO) to detect and isolate the faults in presence. Numerical simulations based on a system linear model show the efficiency of the suggested control laws to make the throttle angle tracking the desired reference. The obtained results show the robustness of the proposed PID controllers based observers via the system parameters variations and in presence of sensor faults and unknown input disturbances.