Tire Wear Improvement by Steering a Third Axle

Williams, Daniel E.

doi:10.4271/2011-01-2148

Cited by 5 publications

(2 citation statements)

References 8 publications

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“…These lateral forces also produce yawing moments about the vehicle center of gravity that can be summed and equated with the yaw acceleration, giving the yaw or rotational equation of motion, (3) where I is the moment of rotational inertia of the vehicle. Together, (2) and (3) describe the dynamic behavior of a vehicle with a constant longitudinal velocity u.…”

Section: Three-axle Vehicle Modelmentioning

confidence: 99%

“…The third axle of these commercial vehicles is occasionally steered, providing low-speed handling [2] and tire wear [3] benefits. Currently electronically controlled rear axle steering systems are offered on European production commercial vehicles that fully counter-steer at low speeds, and remain at their nominal center positions at higher vehicle speeds [4].…”

Section: Introductionmentioning

confidence: 99%

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Directional Dynamics of Steering the Third Axle

Williams

Nhila

2015

SAE Int. J. Commer. Veh.

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With the expectation that means of redundant steering will be necessary for highly autonomous vehicles, different methods of providing redundant steering can be considered. One potential for redundancy is to steer the rear axle for directional control of the vehicle in the event of a failure in the primary steered front axle. This paper will characterize the dynamics of directional control of a three-axle vehicle when steered at the rear, and compare it to a conventionally steered three-axle vehicle. Several compensators are suggested that allow similar vehicle dynamic behavior when steering the rear axle as a driver would expect when steering the front, giving hope that a steerable rear axle can provide acceptable redundancy for a failed primary steering system on the front axle.

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Section: Three-axle Vehicle Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%