To provide an electrical power assisted steering device that applies an additional amount of assisted torque from a motor according to an operation in correspondence with a regulated operation of a steering wheel.SOLUTION: An electric power assisted steering apparatus comprises: an electric motor 1; a torque signal generator 6; a position signal generator 10 for a steering column 5; and a signal processing unit 7 adapted to receive the signals produced by sensing means and to produce therefrom a torque demand signal to be applied to the steering mechanism. The signal processing unit 7 includes: a first signal processing circuit which outputs an assistance torque signal; a second signal processing circuit which applies an additional offset torque to at least one of the input signal and the output signal of the first processing circuit in the event that a steering wheel moves back toward a center position following a period of movement of the steering wheel away from the center position, the additional offset torque being reduced or not being applied in the event that the steering wheel moves away from the center position; and a torque demand signal generating circuit adapted to produce the torque demand signal 8 from the assistance torque signal.SELECTED DRAWING: Figure 1

    【課題】ステアリングハンドルの規定された動作に相応してモータからの追加的な支援トルクの量を加える電力支援式ステアリング装置を提供する。【解決手段】電力支援式ステアリング装置は、電気モータ1とトルク信号生成器6と、ステアリングコラム5の位置信号生成器10と、感知手段により発生された信号を受け取ると共に、ステアリング機構に加えるべきトルク要求信号を発生する信号処理装置7とを備えている。信号処理装置7は、支援トルク信号を出力する第一の信号処理回路と、ステアリングハンドルが中央位置から離れる移動動作の後、中央位置に向けて移動復帰する事象のとき、第一の処理回路の入力信号と出力信号との少なくとも一方に追加的なオフセットトルクを加え、ステアリングハンドルが中央位置から離れる事象のとき、減少、又は加えない第二の信号処理回路と、支援トルク信号からトルク要求信号8を発生するトルク要求信号生成回路とを含む。【選択図】図1


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    Title :

    ELECTRICAL POWER ASSISTED STEERING SYSTEM


    Additional title:

    電力支援式ステアリングシステム


    Contributors:

    Publication date :

    2019-06-27


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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