This article describes the development of a composite controller for an active suspension system. This consists of two controllers operating together over different frequency ranges. The first of these is required to cancel out the low-frequency dynamic loads experienced during cornering and braking in order to maintain a level vehicle platform. The second is required to isolate the car body from vibrations caused by the high-frequency road profile. Furthermore, the vibration controller is based on a fully adaptive control algorithm. This enables the suspension to auto-tune to different vehicle payloads, tyre stiffnesses and other parameter variations experienced during progressive wear, and to adapt to the varying road frequency spectrum. Simulations were performed on a quarter car (one wheel) suspension model and the results obtained demonstrated the potential benefits of composite and adaptive control in active suspension design.
Composite active suspension for automotive vehicles
1994-06-01
6 pages
Aufsatz (Zeitschrift)
Englisch
auto-tune , car body , vibrations , fully adaptive control algorithm , composite active suspension , automotive vehicles , low-frequency dynamic loads , vibration control , composite controller , active suspension design , parameter variations , simulations , vehicle payload , braking , tyre stiffnesses , high-frequency road profile , frequency range , cornering , automotive electronics , vibration controller , suspension model , automobiles , adaptive control , road frequency spectrum
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