To provide a driver torque estimation device which can estimate a driver torque with high accuracy.SOLUTION: An electric power steering device 1 includes: a second shaft 9 which is connected to a first shaft 8 via a torsion bar 10; a basic driver torque estimation part (extended state observer) 62 which estimates a basis driver torque by a disturbance observer on the basis of a torsion bar torque and a rotational angle of the second shaft 9; a gravitational torque calculation part 63 which calculates a gravitational torque, which is given to the first shaft 8 by a gravity force acting on a center of gravity of a steering wheel 2, by use of a rotational angle of the steering wheel 2; and a driver torque estimation part 51 which estimates a driver torque by use of the basic driver torque estimated by the basic driver torque estimation part 62 and the gravitational torque calculated by the gravitational torque calculation part 63.SELECTED DRAWING: Figure 3

    【課題】ドライバトルクを高精度に推定できるドライバトルク推定装置を提供する。【解決手段】電動パワーステアリング装置1は、第1軸8にトーションバー10を介して連結された第2軸9と、トーションバートルクと第2軸9の回転角とに基づいて、外乱オブザーバによって基本ドライバトルクを推定する基本ドライバトルク推定部(拡張状態オブザーバ)62と、ステアリングホイール2の回転角を用いて、ステアリングホイール2の重心に作用する重力によって第1軸8に与えられる重力トルクを演算する重力トルク演算部63と、基本ドライバトルク推定部62によって推定される基本ドライバトルクと、重力トルク演算部63によって演算される重力トルクとを用いて、ドライバトルクを推定するドライバトルク推定部51とを含む。【選択図】図3


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    Title :

    DRIVER TORQUE ESTIMATION DEVICE AND STEERING GEAR COMPRISING SAME


    Additional title:

    ドライバトルク推定装置およびそれを備えた操舵装置


    Contributors:

    Publication date :

    2019-10-24


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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