Approximation of an optimal gain switching active law with a semiactive suspension

The paper presents a two-phase design technique for semiactive suspensions. In the first phase, we use a procedure proposed by Yoshida et al. (1986) to compute a target active control law that can be implemented by optimal gain switching. This control law is such that the force generated by the suspension system is bounded within a set. In the second phase, we approximate this target by controlling the damper coefficient of the semiactive suspension. Results of the two simulations show that the use of a semiactive suspension leads to minimal loss with respect to optimal performance of an active suspension