To grasp a degree of deterioration of a transmission part in an electric power steering device with an inexpensive configuration.SOLUTION: An electric power steering device 100 comprises: a controller 60 which controls an electric motor 50 on the basis of a steering torque and a motor rotation angle detected by a torque sensor 51 and a rotation angle sensor 52; first and second transmission parts 41, 42 which transmit a torque acting on a steering shaft 20 and a torque of the electric motor 50 to a rack shaft 30; an estimation part 71 which estimates a state quantity of the first and second transmission parts 41, 42 on the basis of the steering torque and the motor rotation angle detected by the torque sensor 51 and the rotation angle sensor 52; and a degradation degree calculation part 72 which calculates a degree of degradation of the first and second transmission parts 41, 42 on teh basis of the state quantity estimated by the estimation part 71.SELECTED DRAWING: Figure 1

    【課題】電動パワーステアリング装置における伝達部の劣化度を安価な構成で把握する。【解決手段】電動パワーステアリング装置100は、トルクセンサ51及び回転角センサ52により検出される操舵トルク及びモータ回転角に基づいて電動モータ50を制御するコントローラ60と、ステアリングシャフト20に作用するトルク及び電動モータ50のトルクをラックシャフト30に伝達する第1及び第2伝達部41,42と、トルクセンサ51及び回転角センサ52により検出される操舵トルク及びモータ回転角に基づいて第1及び第2伝達部41,42の状態量を推定する推定部71と、推定部71により推定された状態量に基づいて、第1及び第2伝達部41,42の劣化度を算出する劣化度算出部72と、を備える。【選択図】図1


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    Title :

    ELECTRIC POWER STEERING DEVICE AND MANAGEMENT SYSTEM FOR ELECTRIC POWER STEERING DEVICE


    Additional title:

    電動パワーステアリング装置及び電動パワーステアリング装置の管理システム


    Contributors:

    Publication date :

    2019-10-10


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

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



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