PROBLEM TO BE SOLVED: To properly monitor a rotation angle sensor of a residual one circuit, even when a failure on one of rotation angle sensors of two circuits is detected, and continue steering assist using the rotation angle sensor.SOLUTION: A failure detection part for second circuit is configured so that, when duration time which is determined that magnitude of steering torque Tr is equal to or more than a failure determination value T1 is equal to or more than a set time (S106:YES), and, when a variation frequency f of the steering torque Tr is in a failure determination frequency range (f1-f2) (S109:YES), the failure detection part determines that failure occurs on a rotation angle sensor 31 of a residual one circuit (S103).SELECTED DRAWING: Figure 13

    【課題】 2系統の回転角センサの一方の故障が検出された場合でも、残りの1系統の回転角センサを適正に監視しつつ、その回転角センサを使って操舵アシストを継続できるようにする。【解決手段】 2系統目故障検出部は、操舵トルクTrの大きさが故障判定値T1以上と判定されている継続時間が設定時間以上となる場合(S106:Yes)、および、操舵トルクTrの変動周波数fが故障判定周波数範囲(f1〜f2)に入っている場合(S109:Yes)に、残り1系統の回転角センサ31に故障が発生していると判定する(S103)。【選択図】 図13


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    Titel :

    VEHICLE ELECTRIC POWER STEERING DEVICE


    Weitere Titelangaben:

    車両の電動パワーステアリング装置


    Beteiligte:
    SONE ATSUSHI (Autor:in)

    Erscheinungsdatum :

    2016-06-23


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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