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    • 5. 发明授权
    • Rotation-angle detection device, image processing apparatus, and rotation-angle detection method
    • 旋转角度检测装置,图像处理装置以及旋转角度检测方法
    • US09255817B2
    • 2016-02-09
    • US14279637
    • 2014-05-16
    • Tatsuya Kawase
    • Tatsuya Kawase
    • G01B7/00G01R33/022G01D5/14G01D5/244
    • G01D5/145G01D5/2448
    • A rotation-angle detection device includes: an amplitude adjustment unit that performs correction to match amplitude values of multiple detection signals output from multiple rotation detection units to output corrected signals, the rotation detection units changing outputs in accordance with a rotation angle of a rotor and being provided such that the rotation detection units output the detection signals having different phases; a vector generation unit that performs addition and subtraction on two signals out of the corrected signals to generate two vector component signals that are perpendicular to each other; an amplitude correction unit that performs correction to match amplitudes of the two vector component signals to output corrected vector component signals; and a rotation-angle searching unit that searches for the rotation angle of the rotor on basis of a vector that is represented by the two corrected vector component signals to output a detection angle.
    • 旋转角度检测装置包括:振幅调整单元,其执行校正,以匹配从多个旋转检测单元输出的多个检测信号的振幅值,以输出校正信号,所述旋转检测单元根据转子的旋转角度改变输出, 被设置为使得旋转检测单元输出具有不同相位的检测信号; 矢量生成单元,对经校正的信号进行两个信号的加减运算,生成彼此垂直的两个矢量分量信号; 幅度校正单元,执行校正以匹配两个矢量分量信号的幅度以输出校正的矢量分量信号; 以及旋转角搜索单元,其基于由两个校正矢量分量信号表示的矢量来搜索转子的旋转角度,以输出检测角度。
    • 8. 发明授权
    • Rotation angle detector, rotation angle detection method, and image forming apparatus
    • 旋转角度检测器,旋转角度检测方法和图像形成装置
    • US09435664B2
    • 2016-09-06
    • US14278069
    • 2014-05-15
    • Tatsuya Kawase
    • Tatsuya Kawase
    • G01B7/30G01D5/245
    • G01D5/2451
    • Provided are a rotation angle detector and a rotation angle detecting method. Each of the rotation angle detector and rotation angle detecting method detects a rotation angle of a rotating body according to a plurality of detection signals that vary depending on the rotation angle of the rotating body and have phases different from each other, to output the detected rotation angle as a detection angle, generates pseudo harmonics based on a multiplied detection angle obtained by multiplying the detection signal by a specified number, and removes the pseudo harmonics from the detection signals, to output a corrected detection signals from which the pseudo harmonics are removed to the detecting of the rotation angle, the detection angle being generated based on the correction detection signals.
    • 提供旋转角度检测器和旋转角度检测方法。 旋转角度检测器和旋转角度检测方法中的每一个根据根据旋转体的旋转角度而变化的多个检测信号来检测旋转体的旋转角度,并且具有彼此不同的相位,以输出检测到的旋转 作为检测角度产生基于通过将检测信号乘以规定数目而获得的相乘检测角度的伪谐波,并且从检测信号中去除伪谐波,以将修正的检测信号从其中去除伪谐波被去除 检测旋转角度,检测角度是根据校正检测信号产生的。