A QFT approach to robust control of automobiles active suspension

One of the most important problems which affect the performance of active suspension system is variation in suspension parameters such as tire stiffness, mass of body, etc. In this paper two robust approaches are applied to active suspension: H/sub /spl infin// and QFT. The performance of these two controllers is examined in the presence of parameter variation and actuator nonlinear dynamics. Simulation results show that QFT is effective in the robust control of active suspensions in automobiles and so it is useful for automobile engineers to think about using this algorithm in automobiles.