An electric power steering controller adjustably generates a target steer torque dynamically by weighting (i) a load based target steer torque that is determined based on an estimated load and (ii) a steer angle based target steer torque with a weighting ratio. The weighting ratio varies depending on a condition of a road surface on which a subject vehicle is traveling, a steering state of the driver and the like, which enables an adjustment of the target steer torque to suitably accommodate the condition of the road surface and to provide a road surface conscious steering feel while achieving robustness over an influence of a friction of the mechanical components in a steering system.


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    Title :

    Electric power steering controller


    Contributors:

    Publication date :

    2017-03-14


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    A01B SOIL WORKING IN AGRICULTURE OR FORESTRY , Bodenbearbeitung in Land- oder Forstwirtschaft / B62D MOTOR VEHICLES , Motorfahrzeuge / B63G OFFENSIVE OR DEFENSIVE ARRANGEMENTS ON VESSELS , Angriffs- oder Verteidigungsanordnungen auf Schiffen / B63H Schiffsantrieb oder Steuerung der Schiffe , MARINE PROPULSION OR STEERING / G05D SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES , Systeme zum Steuern oder Regeln nichtelektrischer veränderlicher Größen / G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung



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