In this paper, a new method is presented for estimating the current sprung mass inertial parameters of a vehicle, such as the mass, pitch and roll muss moments of inertia, and lateral and longitudinal centre of gravity locations. The method measures the sprung mass response when the vehicle is driven over an unknown and unmeasured random road profile. From these measurements, the equivalent free-decay responses are extracted and modal analysis techniques used to estimate the sprung mass natural frequencies, damping ratios and mode shapes. This information is combined with a simplified vehicle estimation model, least squares analysis and known equivalent stiffness parameters to estimate the vehicles' inertial parameters. The results obtained from several simulation examples show that estimates of the inertial parameters generally have small relative errors.


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    Title :

    A method for estimation of vehicle inertial parameters


    Additional title:

    Eine Methode zur Schätzung der Trägheitsparameter von Fahrzeugen


    Contributors:

    Published in:

    Vehicle System Dynamics ; 48 , 5 ; 547-565


    Publication date :

    2010


    Size :

    19 Seiten, 17 Bilder, 1 Tabelle, 23 Quellen




    Type of media :

    Article (Journal)


    Type of material :

    Print


    Language :

    English




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