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    • 85. 发明公开
    • Motor rotation angle detection device
    • Vorrichtung zur Erfassung des Motordrehwinkels
    • EP2053725A1
    • 2009-04-29
    • EP08017753.8
    • 2008-10-09
    • Honda Motor Co., Ltd.
    • Miyoshi, TakashiYoneda, AtsuhikoShimizu, Yasuo
    • H02K11/00H02K29/12B62D15/02
    • B62D5/0409B62D15/0235H02K29/12
    • A motor rotation angle detection device, comprising a resolver (56) which detects a rotation angle of a motor (M) generating an assist torque for steering road wheels. The resolver (56) includes an annular rotor (60) disposed inside an annular stator (59) with an air gap interposed in between an outer circumferential surface of the rotor (60) and an inner circumferential surface of the stator (59), so that the stator (59) and the rotor (60) are rotatable relative to each other, wherein a rotor supporting member (53) is connected to a rotary shaft (47) of the motor (M), and the rotor (60) extends out from an axial end portion of the rotor supporting member (53) so as to surround an outer periphery of the rotary shaft (47). With such a motor rotation angle detection device, it is possible to stabilize the magnetic permeability of the rotor (60), and accordingly to increase an accuracy with which the rotation angle of the motor (M) is detected.
    • 一种电动机旋转角度检测装置,包括检测产生用于转向车轮的辅助转矩的电动机(M)的旋转角度的旋转变压器(56)。 旋转变压器(56)包括设置在环形定子(59)内部的环形转子(60),其中空气间隙介于转子(60)的外周表面和定子(59)的内圆周表面之间,因此 定子(59)和转子(60)能够相对于彼此旋转,其中转子支撑构件(53)连接到电动机(M)的旋转轴(47),并且转子(60)延伸 从转子支撑构件(53)的轴向端部以包围旋转轴(47)的外周的方式排出。 通过这样的电动机旋转角度检测装置,能够使转子(60)的磁导率稳定化,从而提高检测出电动机(M)的旋转角度的精度。