An H-infinity-based control design methodology dedicated to the active control of vehicle longitudinal oscillations

This paper deals with the problem of active damping of vehicle oscillations. A complete methodology based on an H(infinity) optimization is presented. Several dedicated analysis tools are used in order to analyze the behavior of the closed-loop system. Two tuning parameters allow the design of a controller managing the compromise between performance (in terms of oscillation attenuation and limit cycles) and robustness. Finally, a feedforward component is designed in order to improve the performance without changing the robustness properties or the controller complexity. Simulation results obtained with an experimentally validated model show the efficiency of the resulting controller.