To precisely estimate torque intended by a driver and applied to a steering shaft.SOLUTION: An electric power steering device includes: a steering angle detecting unit that detects a steering angle at the input side of a steering shaft; an output shaft angle detecting unit that detects an output shaft angle at the output side of the steering shaft; a torque detecting unit that detects torque applied to the steering shaft; and a control unit that controls the electric power steering device. The control unit includes: an estimating block that derives the estimated value of driver torque on the basis of the torque and of the steering angle; a filter processing block that performs filter processing which suppresses the high-frequency components of the estimated value; and a changing block that changes the characteristics of a filter applied at the filter processing block in accordance with an angular velocity derived from the output shaft angle detected by the output shaft angle detecting unit.SELECTED DRAWING: Figure 2

    【課題】操舵軸に対してドライバが意図して付与したトルクを精度良く推定する。【解決手段】電動パワーステアリング装置であって、操舵軸の入力側における操舵角を検出する操舵角検出部と、前記操舵軸の出力側における出力軸角を検出する出力軸角検出部と、前記操舵軸に対して加えられているトルクを検出するトルク検出部と、前記電動パワーステアリング装置を制御する制御部とを備え、前記制御部は、前記トルクと前記操舵角に基づいてドライバトルクの推定値を導出する推定部と、前記推定値の高周波成分を抑制するフィルタ処理を行うフィルタ処理部と、前記出力軸角検出部にて検出した出力軸角から導出される角加速度に応じて、前記フィルタ処理部にて用いられるフィルタの特性を変更する変更部を有する。【選択図】図2


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    Title :

    ELECTRIC POWER STEERING DEVICE AND TORQUE ESTIMATING METHOD


    Additional title:

    電動パワーステアリング装置、およびトルク推定方法


    Contributors:

    Publication date :

    2021-12-23


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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