PROBLEM TO BE SOLVED: To solve such a problem that since it is difficult to detect motor coil short circuit between respective systems of an electric power steering device (EPS) having a double (multiplex) inverter & motor, abnormality is not detected and since an abnormality, e.g., steering oscillation, occurs by starting assist, load on a driver increases.SOLUTION: When a motor drive circuit of one system is activated, the other is in not-activated state, and by monitoring the state of this not-activated system, inter-system short circuit of a motor coil is detected. Consequently, a motor actuator capable of detecting an abnormality quickly upon occurrence short circuit failure between redundancy system motors, issuing a warning is appropriately to a driver, and transiting to an optimum system state can be provided. A power steering device using the same can also be provided.SELECTED DRAWING: Figure 2

    【課題】2重(多重)インバータ&モータを持つ電動パワーステアリング装置(EPS)の各系間のモータコイルショートの検出は各系個別の診断では検出困難なため、異常が検出されず、アシストを開始して、操舵振動等の異常が発生しドライバーに負担が増加する。【解決手段】一方の系のモータ駆動回路を起動させた時、他方は未起動状態とし、この未起動の系の状態を監視する事で、モータコイルの系間ショートを検出する。これにより、冗長系モータ間でショート故障が発生した場合に速やかにその異常が検出出来ると共に、ドライバーへ適切に警告を出すと共に、最適なシステム状態に遷移が可能なモータアクチュエータ、及びそれを用いたパワーステアリング装置を提供することができる。【選択図】図2


    Access

    Download


    Export, share and cite



    Title :

    MOTOR ACTUATOR, AND POWER STEERING DEVICE USING THE SAME


    Additional title:

    モータアクチュエータ、及びそれを用いたパワーステアリング装置


    Contributors:

    Publication date :

    2017-09-21


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    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



    MOTOR ACTUATOR, AND POWER STEERING DEVICE USING SAME

    SASAKI MITSUO | European Patent Office | 2017

    Free access

    MOTOR ACTUATOR AND POWER STEERING APPARATUS USING THE SAME

    SASAKI MITSUO | European Patent Office | 2019

    Free access

    Motor actuator and power steering apparatus using the same

    SASAKI MITSUO | European Patent Office | 2019

    Free access

    MOTOR CONTROL DEVICE, MOTOR CONTROL DEVICE FOR STEERING ACTUATOR, AND STEERING ACTUATOR SYSTEM

    IMAZATO RYO / UMEMOTO TAKAFUMI / YOKOZUKA TAKUYA | European Patent Office | 2020

    Free access

    MOTOR, ACTUATOR, AND STEERING DEVICE

    ASAHI YU / YAMASHITA YOSHIAKI / KATAOKA NAKABA | European Patent Office | 2025

    Free access