A monitoring system for an electric power-assisted steering system comprising a DC power supply; an inverter bridge including a plurality of bridge switches selectively connecting phases of a multi-phase electric motor to the DC power supply, the multi-phase electric motor being configured to provide power-assistance to a steering system of a vehicle; a bridge driver circuit for providing control signals to the inverter bridge; and a DC link capacitor circuit interposed between the DC power supply and the inverter bridge, the DC link capacitor circuit at least one DC link capacitor. The monitoring system comprises a monitoring circuit configured to monitor the integrity of the DC link capacitor circuit, and outputting a ripple value indicative of a ripple voltage in an output of the DC power supply; and comparison means for comparing the ripple value with at least one ripple parameter indicative of a fault in the DC link capacitor circuit and determining whether a fault is present.


    Access

    Download


    Export, share and cite



    Title :

    Monitoring system for electric power assisted steering


    Contributors:

    Publication date :

    2020-02-25


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern / B62D MOTOR VEHICLES , Motorfahrzeuge



    MONITORING SYSTEM FOR ELECTRIC POWER ASSISTED STEERING

    TERDY TAMAS / MAHENDHRARAJAH CHARLES / KUDANOWSKI MACIEJ | European Patent Office | 2021

    Free access

    Monitoring System for Electric Power Assisted Steering

    TERDY TAMAS / MAHENDHRARAJAH CHARLES / KUDANOWSKI MACIEJ | European Patent Office | 2019

    Free access

    ELECTRIC POWER ASSISTED STEERING SYSTEM

    MIYATSU RYUICHI / YOSHIOKA KOYU / MATSUBARA KAZUHITO | European Patent Office | 2019

    Free access

    Electric power assisted steering system

    FARRELLY JAMES OWEN PATRICK | European Patent Office | 2019

    Free access

    Electric power assisted steering system

    FARRELLY JAMES OWEN PATRICK | European Patent Office | 2018

    Free access