Simulation studies on an active all-wheel-steering car show that disturbance of vehicle parameters have high influence on lateral car dynamics. This motivates the need of robust design against such parameter uncertainties. A specific parametrisation is established combining deterministic, velocity-dependent steering control parameters with partly uncertain, velocity-independent vehicle parameters for simultaneous use in a numerical optimisation process. Model-based objectives are formulated and summarised in a multi-objective optimisation problem where especially the lateral steady-state behaviour is improved by an adaption strategy based on measurable uncertainties. The normally distributed uncertainties are generated by optimal Latin hypercube sampling and a response surface based strategy helps to cut down time consuming model evaluations which offers the possibility to use a genetic optimisation algorithm. Optimisation results are discussed in different criterion spaces and the achieved improvements confirm the validity of the proposed procedure.


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    Title :

    Optimisation of lateral car dynamics taking into account parameter uncertainties


    Contributors:

    Published in:

    Vehicle System Dynamics ; 52 , 2 ; 166-185


    Publication date :

    2014-02-01


    Size :

    20 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English





    Optimisation of lateral car dynamics taking into account parameter uncertainties

    Busch,J. / Bestle,D. / Brandenburg Univ.of Technol.,DE | Automotive engineering | 2014




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