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The lateral stability for the tractor-semitrailer vehicle which consists of the tractor and the semitrailer is much more complex compared with the individual 2-axle vehicle. ‘Jackknife’ and ‘lateral sway’ are the typical lateral destabilizations in server situations. Considering the strong nonlinear property of tyre force in severe situations, nonlinear system method is used here to study the lateral...
This paper proposes a new stability control method that quantifies and uses the level of lateral force saturation on each axle of a vehicle featuring an independent wheel drive system. The magnitude of the saturation, which can be interpreted as a slip-angle deficiency, is determined from estimated nonlinear axle lateral forces and comparisons with linear projections that use estimates of the cornering...
The 2DOF model and differential equation of three-axle vehicle with multi-axle steering are established. Based on zero side-slip angle of mass center and proportional control strategy, handling stability of three-axle vehicle with two steering mode (the front and rear wheel steering 4WS and all wheel steering 6WS) are simulated and compared. But considering the realization of all-wheel steering is...
We consider the problem of rear axle regenerative braking maximization in hybrid vehicles. We focus on cornering maneuvers on low friction surfaces, where excessive braking at the rear axle might induce vehicle instability. We present and compare two predictive control approaches, where the objective is maximizing the regenerative braking and distributing the friction braking at the four wheels, while...
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