Vehicle rollover represents a significant percentage of single-vehicle accidents and accounts for over 9,000 fatalities and over 200,000 non-fatal injuries each year. Previous automotive research has studied ways for detecting and mitigating rollover on flat ground at high speed, and robotics research has studied the rollover stability of robots on rough terrain at low speed. Accident statistics show, however, that over 80% of rollovers occur when a vehicle departs the roadway and encounters sloped and rough terrain at high speed. This thesis investigates the stability limits imposed by off-road terrain conditions and techniques for measuring vehicle stability in the presence of off-road terrain factors. An analysis of the effects of terrain slope, roughness, and deformability on vehicle rollover stability in road departure scenarios is presented. A simple model that captures the first-order effects of each of these terrain features is presented and used to compare the relative danger posed by each factor. A new stability measure is developed that is valid in off-road conditions, which include sloped, rough, and deformable terrain. The measure is based on the distribution of wheel-terrain contact forces and is measurable with practical sensors.

    (cont.) The measure is compared to existing stability measures and is able to detect wheel lift-off with greater accuracy in off-road conditions. The measure is experimentally validated with wheel lift-off detection as well. An uncertainty analysis of the measure is presented that assesses the relative importance of each sensor and parameter in the measure.


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    Modeling, analysis, and measurement of passenger vehicle stability



    Erscheinungsdatum :

    2006


    Format / Umfang :

    160 pages


    Anmerkungen:

    Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2006.
    Includes bibliographical references (leaves 114-118).


    Medientyp :

    Hochschulschrift


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    Passenger Vehicle Characterization, Modeling, Validation, and Sensitivity Analysis

    Klopp, Adam / Schultz, Jack / Tajaddini, Ali | British Library Conference Proceedings | 2018


    Passenger discomfort measurement during vehicle maneuver

    OBERLIER FABIEN / BUERKLE CHRISTIAN / SCHOLL KAI-UWE | Europäisches Patentamt | 2022

    Freier Zugriff

    PASSENGER DISCOMFORT MEASUREMENT DURING VEHICLE MANEUVER

    OBORIL FABIAN / BUERKLE CORNELIUS / SCHOLL KAY-ULRICH | Europäisches Patentamt | 2022

    Freier Zugriff

    PASSENGER DISCOMFORT MEASUREMENT DURING VEHICLE MANEUVER

    OBORIL FABIAN / BUERKLE CORNELIUS / SCHOLL KAY-ULRICH | Europäisches Patentamt | 2021

    Freier Zugriff

    Three-Wheel Passenger Vehicle Stability and Handling

    Kanianthra, Joseph / Van Valkenburgh, Paul G. / Klein, Richard H. | SAE Technical Papers | 1982