Abstract
According to the problem of a truck steering heaviness, the paper built the truck virtual model and steering efforts test environment by multibody dynamics software ADAMS, and improved the steering system. Using the virtual model and virtual test environment, the steering efforts virtual tests had been finished. At the same time, to verify the simulation results, the steering effort road tests of the improvement truck had been processed. The result shows that simulation and road test had good consistency, the improvement of the steering system improved the truck steering efforts.
