An experimental comparison between semi-active and passive suspensions for air-cushion vehicles
by D. Hrovat, D.L. Margolis
International Journal of Vehicle Design (IJVD), Vol. 2, No. 3, 1981

Abstract: An experimental heave made model of a tracked air-cushion vehicle incorporating on-off semi-active (SA) damper suspension is described. Preliminary tests are conducted to assess the SA pneumatic damper characteristics. For identical sinusoidal ground inputs, the totally passive and on-off SA damping schemes are compared in terms of sprung mass vibration isolation properties. It is shown that the semi-active suspension offers significant advantages over the corresponding passive suspensions, while at the same time requiring only a small amount of control energy. Although the performance of the pneumatic SA device is judged to be adequate for the case under investigation, it is concluded that, for more demanding applications, requiring higher controller speeds of response, an hydraulic SA implementation will probably have to be used.

Online publication date: Sun, 25-May-2014

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