Dynamic modelling and simulation of a heavy vehicle trailing arm air suspension.

Author(s)
Li, B. & McLean, A.G.
Year
Abstract

This paper concentrates on the trailing arm air suspensions available on the rear tandem drive axles of some heavy prime movers. On such vehicles, the application of air suspension is believed to have a series of advantages including road friendly characteristics, better load sharing and self ride height adjustment. However, air suspensions are proved unstable under dynamic situations possessing inadequate support, harsh ride and chaotic response. In this paper, some individual components of the air suspension are modeled as well as the suspension vibration model and the pneumatic transmission line model. These models are then simulated using both SIMULINK and analytical techniques to find the causes for the adverse characteristics. From the simulation it is identified, the harsh ride is caused by insufficient flow in the transmission line whereas the chaotic response, at least to some extent, is found to be due to the haphazard design of the analogue feedback control system, especially the ride height control valve (HCV). (Author/publisher) For the covering entry of this conference, please see ITRD abstract no. E208431.

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Publication

Library number
C 26957 (In: C 26913 CD-ROM) /91 / ITRD E209305
Source

In: Transport: our highway to a sustainable future : proceedings of the 21st ARRB and 11th REAAA Conference, Cairns, Queensland, Australia, 18-23 May 2003, 16 p., 23 ref.

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This publication is one of our other publications, and part of our extensive collection of road safety literature, that also includes the SWOV publications.