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    • 8. 发明申请
    • ROTATION ANGLE DETECTING DEVICE
    • 旋转角度检测装置
    • US20120182008A1
    • 2012-07-19
    • US13336186
    • 2011-12-23
    • Takeshi UEDAHayato KOMATSU
    • Takeshi UEDAHayato KOMATSU
    • G01B7/30
    • G01D5/145
    • Three magnetic sensors are arranged around a rotor at predetermined angular intervals about the rotation axis of the rotor. Sinusoidal signals that have a phase difference of a predetermined degree of 45° are output from the respective magnetic sensors. A rotation angle computing device detects a magnetic pole transition in a first output signal as follows. Specifically, the rotation angle computing device detects a magnetic pole transition in the first output signal based on a value having a larger absolute value between a current value of the second sinusoidal signal and a current value of the third sinusoidal signal, an immediately preceding value of the first sinusoidal signal and a current value of the first sinusoidal signal.
    • 围绕转子的旋转轴线以预定的角度间隔围绕转子设置三个磁性传感器。 从相应的磁传感器输出具有预定的45度相位差的正弦信号。 旋转角度计算装置如下检测第一输出信号中的磁极转变。 具体地说,旋转角计算装置基于第二正弦信号的电流值和第三正弦信号的电流值之间的绝对值较大的值,检测第一输出信号中的磁极转变, 第一正弦信号和第一正弦信号的电流值。
    • 9. 发明申请
    • ROTATION ANGLE DETECTION DEVICE
    • 旋转角度检测装置
    • US20120158340A1
    • 2012-06-21
    • US13326701
    • 2011-12-15
    • Takeshi UEDA
    • Takeshi UEDA
    • G01B7/30G06F19/00
    • G01D5/244G01D5/24461G01D5/3473
    • A rotation angle calculation unit includes a first rotation angle calculation portion, a second rotation angle calculation portion, a third rotation angle calculation portion, an abnormality monitoring portion, and a final rotation angle calculation portion. The abnormality monitoring portion determines, based on a first output signal, a second output signal, and a third output signal, whether the first to third output signals are each normal or abnormal. The final rotation angle calculation portion calculates a final rotation angle based on the final determination result obtained by the abnormality monitoring portion and the first to third rotation angles calculated by the first to third rotation angle calculation portions, respectively.
    • 旋转角度计算单元包括第一旋转角度计算部分,第二旋转角度计算部分,第三旋转角度计算部分,异常监视部分和最终旋转角度计算部分。 异常监视部分基于第一输出信号确定第二输出信号和第三输出信号,第一至第三输出信号是否正常或异常。 最终旋转角度计算部分基于由异常监视部分获得的最终确定结果和由第一至第三旋转角度计算部分计算的第一至第三旋转角度分别计算最终旋转角度。
    • 10. 发明申请
    • ROTATION ANGLE DETECTION APPARATUS
    • 旋转角度检测装置
    • US20120232839A1
    • 2012-09-13
    • US13408415
    • 2012-02-29
    • Takeshi UEDA
    • Takeshi UEDA
    • G01B7/30G06F19/00
    • G01D5/24471G01D5/2451
    • A first third harmonic component removing portion calculates an approximate value (sin θ)n of a signal sin θ that is an output signal of a first magnetic sensor from which third harmonic components have been removed. A second third harmonic component removing portion calculates an approximate value (cos θ)n of a signal cos θ that is an output signal of a second magnetic sensor from which third harmonic components have been removed. A rotation angle calculation portion calculates a rotation angle θ of a rotor based on the approximate value (sin θ)n of sin θ, which has been calculated by the first third harmonic component removing portion and the approximate value (cos θ)n of cos θ, which has been calculated by the second third harmonic component removing portion.
    • 第一三次谐波分量去除部分计算信号sin& thetas的近似值(sin& tt;)n; 这是已经去除三次谐波分量的第一磁传感器的输出信号。 第二三次谐波分量去除部分计算信号cos& t的近似值(cos& t); n。 这是从其中去除三次谐波分量的第二磁传感器的输出信号。 旋转角度计算部分计算旋转角度和角度; 基于已经由第一三次谐波分量去除部分计算出的sin&thetas的近似值(sin& tt;)n和已经计算出的cos&Thetas的近似值(cos& t) 通过第二三次谐波分量去除部分。