Accession Number : ADA540390


Title :   A Saturation Balancing Control Method for Enhancing Dynamic Vehicle Stability (PREPRINT)


Descriptive Note : Journal article preprint


Corporate Author : CLEMSON UNIV SC INTERNATIONAL CENTER FOR AUTOMOTIVE RESEARCH (CUICAR)


Personal Author(s) : Sill, Justin ; Ayalew, Beshah


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a540390.pdf


Report Date : 01 Mar 2011


Pagination or Media Count : 28


Abstract : This paper proposes a new vehicle stability control method that quantifies and uses the level of lateral force saturation on each axle/wheel of a vehicle. The magnitude of the saturation, which can be interpreted as a slip-angle deficiency, is determined from on-line estimated nonlinear lateral tire forces and their linear projections. Once known, the saturation levels are employed in a saturation balancing control structure that biases the drive torque to either the front or rear axles/wheels with the goal of minimizing excessive under- or over-steer. The control structure avoids the need for an explicit reference model to generate target vehicle responses. The method is particularly suited for a vehicle with a torque-biasing or independent axle or wheel drive system. The benefits of the proposed approach are demonstrated considering a nominally unstable heavy vehicle in an extreme obstacle avoidance type dynamic maneuver.


Descriptors :   *STABILITY , *MANEUVERS , *BRAKING , *PASSENGER VEHICLES , *ADAPTIVE CONTROL SYSTEMS , AXLE SHAFTS , GROUND VEHICLES , TORQUE , CONTROL SYSTEMS


Subject Categories : Cybernetics
      Surface Transportation and Equipment


Distribution Statement : APPROVED FOR PUBLIC RELEASE