An Integrated Design Method for Articulated Heavy Vehicles with Active Trailer Steering Systems
- Journal Article
- DOI: https://doi.org/10.4271/2010-01-0092
Published April 12, 2010 by SAE International in United States
Citation: He, Y., Islam, M., and Webster, T., "An Integrated Design Method for Articulated Heavy Vehicles with Active Trailer Steering Systems," SAE Int. J. Passeng. Cars – Mech. Syst. 3(1):158-174, 2010, https://doi.org/10.4271/2010-01-0092.
This paper presents an integrated design method for active trailer steering (ATS) systems of articulated heavy vehicles (AHVs). Of all contradictory design goals of AHVs, two of them, i.e. path-following at low speeds and lateral stability at high speeds, may be the most fundamental and important, which have been bothering vehicle designers and researchers. To tackle this problem, a new design synthesis approach is proposed: with design optimization techniques, the active design variables of ATS systems and passive design variables of trailers can be optimized simultaneously; the ATS controller derived from this approach has two operational modes, one for improving lateral stability at high speeds and the other for enhancing path-following at low speeds. To demonstrate the effectiveness of the proposed approach, it is applied to the design of an ATS system for an AHV with a tractor and a full trailer. Simulation results illustrate that compared with the baseline vehicle, the one derived from the design synthesis approach decreases low-speed off-tracking by 35.2% and reduces high-speed rearward amplification ratio by 30.0%. The proposed approach may be used for identifying desired design variables and predicting performance envelopes in the early design stages of AHVs with ATS systems.