To provide a reliable arithmetic unit.SOLUTION: An interface group 41 includes: a voltage abnormality detection circuit 71 for detecting an abnormality of a power supply circuit 61; an arithmetic rotation direction comparison circuit 72 for detecting an abnormality of a rotation direction detection circuit 65; a sensor rotation direction comparison circuit 73 for detecting an abnormality of detection signals Sd1 and Sd2; and a counter comparison circuit 74 for detecting an abnormality of a counter 68. The interface group 41 further includes: a power source BIST circuit 81 for diagnosing the voltage abnormality detection circuit 71; an arithmetic BIST circuit 82 for diagnosing the arithmetic rotation direction comparison circuit 72; a sensor BIST circuit 83 for diagnosing the sensor rotation direction comparison circuit 73; and a counter BIST circuit 84 for diagnosing the counter comparison circuit 74.SELECTED DRAWING: Figure 2

    【課題】信頼性の高い演算装置を提供する。【解決手段】インターフェース群41は、電源回路61の異常を検出する電圧異常検出回路71と、回転方向検出回路65の異常を検出する演算回転方向比較回路72と、検出信号Sd1,Sd2の異常を検出するセンサ回転方向比較回路73と、カウンタ68の異常を検出するカウンタ比較回路74とを備える。そして、インターフェース群41は、電圧異常検出回路71を診断する電源BIST回路81と、演算回転方向比較回路72を診断する演算BIST回路82と、センサ回転方向比較回路73を診断するセンサBIST回路83と、カウンタ比較回路74を診断するカウンタBIST回路84とを備える。【選択図】図2


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    Title :

    ARITHMETIC UNIT


    Additional title:

    演算装置


    Contributors:

    Publication date :

    2019-11-21


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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