To provide a rotational angle detection device for precisely correcting a detection angle even if temperature of a rotational angle sensor is changed.SOLUTION: Rotational angle sensors 301, 302 include at least two hall elements mounted on a board, and at least one sensor magnet 37. A primary error elimination part 43 eliminates "an error caused by position precision of rotational angle sensors" included in detection angles θo1, θo2 of the rotational angle sensors, and calculates detection angles θ1p and θ2p after primary correction. A secondary error elimination part 45 calculates angle error correction amounts θ#1, θ#2 so as to eliminate "an error caused by leakage flux by energization to winding wires." An angle correction operation part 46 calculates detection angles θm1, θm2 after secondary correction on the basis of detection angles θp1, θp2 after primary correction and angle error correction amounts θ#1 and θ#2. A secondary error elimination part 45 calculates the angle error correction amounts θ#1, θ#2 according to temperature of the rotational angle sensors 301, 302 and "an amount correlated with the amplitude and phase of current conducted to winding wires."SELECTED DRAWING: Figure 8

    【課題】回転角センサの温度が変化しても検出角度を精度良く補正する回転角検出装置を提供する。【解決手段】回転角センサ301、302は、基板に実装された二つ以上のホール素子、及び、一つ以上のセンサマグネット37を含む。一次誤差除去部43は、回転角センサの検出角度θo1、θo2に含まれる、「回転角センサの位置精度に起因する誤差」を除去し、一次補正後検出角度θ1p、θ2pを算出する。二次誤差除去部45は、「巻線への通電による漏れ磁束に起因する誤差」を除去するように角度誤差補正量θ#1、θ#2を算出する。角度補正演算部46は、一次補正後検出角度θp1、θp2と角度誤差補正量θ#1、θ#2とに基づき二次補正後検出角度θm1、θm2を算出する。二次誤差除去部45は、回転角センサ301、302の温度、及び、「巻線に通電される電流の振幅及び位相に相関する量」に応じて角度誤差補正量θ#1、θ#2を算出する。【選択図】図8


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    Titel :

    ROTATIONAL ANGLE DETECTION DEVICE


    Weitere Titelangaben:

    回転角検出装置


    Beteiligte:
    MATSUKI YOSUKE (Autor:in) / HORIBA HARUKI (Autor:in) / KANO RYO (Autor:in)

    Erscheinungsdatum :

    2023-12-06


    Medientyp :

    Patent


    Format :

    Elektronische Ressource


    Sprache :

    Japanisch


    Klassifikation :

    IPC:    G01D MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE , Anzeigen oder Aufzeichnen in Verbindung mit Messen allgemein / B62D MOTOR VEHICLES , Motorfahrzeuge / G01B MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS , Messen der Länge, der Dicke oder ähnlicher linearer Abmessungen



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