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发明授权
CN103868448B 相位差检测装置以及具备其的旋转角检测装置 失效 - 权利终止

相位差检测装置以及具备其的旋转角检测装置
摘要：
本发明提供一种相位差检测装置以及具备了其的旋转角检测装置，第1相位差运算部使用在输入轴旋转时，两个磁传感器均检测同一个任意的磁极期间的三个不同定时进行取样而得的六个输出信号对与该任意的磁极对应的E(i)·C的值进行运算。这里E是角宽度误差修正值，C是两个信号的相位差。第1相位差运算部进行这样的处理直到所有的与磁极对应的E(i)·C的值被运算出为止。若所有的与磁极对应的E(i)·C的值被运算出来，则第1相位差运算部使用所有的与磁极对应的E(i)·C和磁极数(m)，对两输出信号(S1、S2)间的相位差(C)进行运算。
摘要（英）：

In a phase difference detector, a first phase difference computation unit computes a value of E(i) · C corresponding to one and the same given magnetic pole sensed by the two magnetic sensors with use of six output signals sampled at three different timings while the two magnetic sensors are sensing the given magnetic pole when a rotary body is rotating. E is an angular width error correction value, and C is a phase difference between two signals (S 1 , S 2 ). The first phase difference computation unit executes this process until values of E(i) · C corresponding to all the magnetic poles are computed. After that, the first phase difference computation unit computes the phase difference (C) between the output signals (S 1 , S 2 ) with use of the values of E(i) · C corresponding to all the magnetic poles and the number (m) of the magnetic poles.

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