Active Front Steering (AFS) provides an electronically controlled superposition of an angle to the steering wheel angle. This additional degree of freedom enables a continuous and driving-situation dependent adaptation of the steering characteristics. Features like steering comfort, effort and steering dynamics are optimized and stabilizing steering interventions can be performed. After the successful introduction of AFS (or active steering) together with the new BMW 5-series into the international market, ZF Lenksysteme focuses on aspects like system modularization and integration. For that reason the system bounds, its functionality, and the required system interface are defined to provide a compatibility to several overall chassis control concepts. This paper focuses on a modular system concept and its respective advantages and requirements. In order to simplify the description of the interface for the modular AFS system, it will be defined in three phases - assistance, - assistance and stabilization and - assistance, stabilization, manual configuration and diagnosis. The pure assistance interface exclusively includes input signals - signed road wheel speeds,- status of the road wheel speeds, - steering wheel angle, ESP and ABS intervention flags, - engine revolutions, - current gear.


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    Title :

    Concept and functionality of the active front steering system


    Additional title:

    Konzept und Funktionalität aktiver Lenksysteme


    Contributors:


    Publication date :

    2004


    Size :

    7 Seiten, 16 Bilder, 10 Quellen




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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