Tuning of an active suspension system using a fractional controller and a closed-loop tuning

This paper presents the design of the controller of an active suspension system. Such a system begins to be used in automotive applications, for example to isolate the engine from the chassis. A restricted-complexity controller is initially designed using the fractional Crone methodology. Then its high-level parameters are then fine-tuned using a "tuned in closed-loop" approach. The optimization technique uses the power spectral density of the closed-loop simulation of a residual force to be niinimized. This final controller is finally assessed with a real-time implementation.