To make it possible to obtain an absolute steering angle even when one of two detection units which are incorporated in a steering angle sensor and detect relative steering angles fails.SOLUTION: When determining that an absolute steering angle θf is not outputted from an absolute steering angle arithmetic unit 11c, a self diagnosis unit 21 checks whether either a primary detection unit 11a or secondary detection unit 11b has failed, obtains a current absolute steering angle θf by adding a relative steering angle (θp or θs), which is outputted from the normal detection unit, to a latest absolute steering angle θf(n-1) (θf←θf(n-1)+(θp or θs)), and updates the latest absolute steering angle θf(n-1) with the absolute steering angle θf (θf(n-1)←θf).SELECTED DRAWING: Figure 1

    【課題】操舵角センサに設けられた相対舵角を検出する2つの検出部の一方が失陥した場合であっても、絶対舵角を求めることができるようにする。【解決手段】自己診断部21は、絶対舵角演算部11cから絶対舵角θfが出力されていないと判定した場合、プライマリ検出部11aとセカンダリ検出部11bとの何れが失陥しているかを調べ、正常な検出部側から出力されている相対舵角(θp或いはθs)を、最新の絶対舵角θf(n-1)に加算して、今回の絶対舵角θfを求め(θf←θf(n-1)+(θp或いはθs))、この絶対舵角θfで最新の絶対舵角θf(n-1)を更新する(θf(n-1)←θf)。【選択図】図1


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    Titel :

    STEERING ANGLE DETECTOR


    Weitere Titelangaben:

    操舵角検出装置


    Beteiligte:
    KISHI RYUSAKU (Autor:in) / TSAI POHSIU (Autor:in)

    Erscheinungsdatum :

    01.11.2021


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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