As a consequence of the availability of efficient and reliable electronic components, vehicle designers are begining to use different automatic control systems to improve vehicle quality and performance economy. Specifically, the improvement in vehicle suspension systems is based on the application of active and semi-active vibration control systems. In this article, the properties of active and semi-active suspension for heavy goods vehicles are compared. The criteria for the comparison are the RMS sprung mass vertical acceleration, RMS dynamic tyre force, and suspension power consumption. The active system is based on an air-spring with controlled in-flow and out-flow of the air. In the semi-active system, a controlled hydraulic damper is employed. The advantage of active systems is the possibility of further increasing of their efectiveness by proper adjusting of the value of 'd' (evidently at the expense of increased power consumption). In the semi-active system, the possibility of comparable increase of effectiveness is rather limited. If equal reduction of the RMS value of vertical acceleration of sprung mass m2is the criterion, then the required power for the semi-active system operation is lower than that for the active system. On the contrary, a decrease of the effective value of the dynamic part of the force transmitted to the roadway is more pronounced in the active system. The results concerning the semi-active suspension system were taken from the article by Besinger et al. (Besinger, F.H., Cebon, D. and Cole, D.J., 1995, Force control of a semi-active damper. Vehicle System Dynamics, 24(9), 695-723.)
Comparison of the properties of active and semiactive suspension
Eigenschaftenvergleich von aktiven und halbaktiven Federungen
Vehicle System Dynamics ; 45 , 11 ; 1065-1073
2007
9 Seiten, 3 Bilder, 2 Tabellen, 12 Quellen
Aufsatz (Zeitschrift)
Englisch
Fahrzeugfederung , aktive Steuerung und Regelung , Anwendung im Fahrzeugbau , mathematisches Modell , elektrohydraulische Steuerung , Modellbildung , Lkw (Lastkraftwagen) , elektropneumatische Steuerung , mechanische Schwingung , Schwingungsverhalten , quadratischer Mittelwert , dynamisches Verhalten , Luftfeder
Comparison of the properties of active and semiactive suspension
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