In this work, the preview control problem is considered for fully active and hydro-pneumatic slow-active systems. Based on the quarter car model, linear optimal control theory is used to derive the control laws. The Pade approximation technique is used to represent the preview time resulting from a preview sensor mounted at the front bumper to measure the road irregularities ahead of the front wheels. The results of the slow-active system with preview showed that there is 15 % improvement in the ride comfort compared to slow-active without preview and 28.5 % improvement over passive system at similar root mean square (r.m.s) dynamic tyre load and suspension working space. The performance gains are, however, lower by about 15 % than those obtainable with the theoretically ideal, full active system with preview. The power results for slow active with and without preview showed that a 2 kW fixed displacement hydraulic pump is enough for full vehicle requirements.
Hydro-pneumatic slow-active suspension with preview control
Eine hydro-pneumatische langsamaktive Fahrwerksaufhängung mit 'vorausschauender' Regelung
Vehicle System Dynamics ; 25 , 5 ; 369-386
1996
18 Seiten, 8 Bilder, 3 Tabellen, 23 Quellen
Aufsatz (Zeitschrift)
Englisch
Hydro-pneumatic Slow-active Suspension with Preview Control
Taylor & Francis Verlag | 1996
|Hydro-pneumatic Slow-active Suspension with Preview Control
Online Contents | 1996
|Hydro-pneumatic slow-active suspension with preview control
Kraftfahrwesen | 1996
|A theoretical study of the hydro-pneumatic semi-active suspension system with preview
Kraftfahrwesen | 1998
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