This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Preview Estimation and Control for (Semi-) Active Suspensions
Published September 14, 1992 by Society of Automotive Engineers of Japan in Japan
An active suspension with preview is tested for rounded pulses and a stochastic road surface, and is compared with a passive suspension. The spectacular performance improvement obtained for a step function as road surface cannot be achieved. However, the improvement is still significant.
An observer is presented to reconstruct the preview information. No model of the road surface is needed. From simulations, it appears that the observer reconstructs both deterministic and stochastic road surface satisfactory. However, the influence of measurement noise is not reduced sufficiently.
Finally, a strategy is presented to combine the controller and the observer.