A control unit for an electric power steering apparatus that constitutes a model following control that an output of a controlled object follows-up to an output of a reference model, eliminates or reduces the occurrences of a noisy sound and a shock force at an end hitting without giving any uncomfortable steering feeling, takes a safety countermeasure against the model following control and suppresses the variation of the control output in a case that the safety countermeasure is excessively operated. The control unit calculates a current command value based on at least a steering torque and performs an assist-control of a steering system by driving a motor based on the current command value, comprising: a configuration of a model following control including a viscoelastic model as a reference model within a predetermined angle at front of a rack end, wherein shift correction is performed against displacement information which is used in the model following control; and wherein rack end hitting is suppressed by limiting a range of a control amount in the model following control by using a limit value which is set based on at least steering velocity.


    Access

    Download


    Export, share and cite



    Title :

    CONTROL UNIT FOR ELECTRIC POWER STEERING APPARATUS


    Contributors:

    Publication date :

    2020-11-05


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    English


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



    CONTROL UNIT OF ELECTRIC POWER STEERING APPARATUS

    ENDO SHUJI | European Patent Office | 2019

    Free access

    CONTROL UNIT FOR ELECTRIC POWER STEERING APPARATUS

    TSUBAKI TAKAHIRO | European Patent Office | 2016

    Free access

    CONTROL UNIT OF ELECTRIC POWER STEERING APPARATUS

    SAKAGUCHI TORU / ONOE TOSHIKAZU | European Patent Office | 2019

    Free access

    Control unit of electric power steering apparatus

    ENDO SHUJI | European Patent Office | 2020

    Free access

    Control unit for electric power steering apparatus

    TSUBAKI TAKAHIRO | European Patent Office | 2017

    Free access