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    • 1. 发明授权
    • Apparatus for detecting the amplitude and phase of an A.C. signal
    • 用于检测交流信号的振幅和相位的装置
    • US5714877A
    • 1998-02-03
    • US754504
    • 1996-11-19
    • Toshiyuki FujiiShinzo TamaiHatsuhiko NaitohNaohiro Toki
    • Toshiyuki FujiiShinzo TamaiHatsuhiko NaitohNaohiro Toki
    • G01R19/00G01R19/04G01R25/00G01R31/42H02H3/08H02H3/26
    • G01R25/00G01R19/0053G01R31/42
    • An apparatus for detecting the amplitude and phase of an a.c. signal. The apparatus includes a signal detection circuit for detecting the a.c. signal, a signal splitting circuit for splitting the detected a.c. signal into first and second a.c. signals out of phase with each other by 90.degree.. The signal splitting circuit includes a low-pass filter, and a differentiation circuit. The apparatus also includes a phase compensation circuit coupled to the signal splitting circuit for receiving the first and second a.c. signals from the signal splitting circuit and for advancing the phase of an output signal of the apparatus by the phase lag of the low-pass filter. The phase compensation circuit also includes an amplitude and phased detection circuit for detecting the amplitude and phase of the detected a.c. signal by implementing a polar coordinate transformation of the first and second a.c. signals received from the signal splitting circuit.
    • 一种用于检测直流电压的振幅和相位的装置。 信号。 该装置包括用于检测直流电压的信号检测电路。 信号,用于分离检测到的交流电平的信号分离电路。 信号进入第一和第二个a.c. 信号异相90度。 信号分离电路包括低通滤波器和微分电路。 该装置还包括耦合到信号分离电路的相位补偿电路,用于接收第一和第二直流 来自信号分离电路的信号,并且通过低通滤波器的相位差推进装置的输出信号的相位。 相位补偿电路还包括幅度和相位检测电路,用于检测检测到的交流电的幅度和相位。 通过实施第一和第二等角的极坐标变换来发出信号。 从信号分离电路接收的信号。
    • 5. 发明授权
    • Apparatus for detecting the amplitude and phase of an a.c. signal
    • 用于检测交流电压的幅度和相位的装置 信号
    • US5808462A
    • 1998-09-15
    • US752316
    • 1996-11-19
    • Toshiyuki FujiiShinzo TamaiHatsuhiko NaitohNaohiro Toki
    • Toshiyuki FujiiShinzo TamaiHatsuhiko NaitohNaohiro Toki
    • G01R19/00G01R19/04G01R25/00G01R31/42H02H3/08H02H3/26
    • G01R25/00G01R19/0053G01R31/42
    • An apparatus for detecting the amplitude and phase of an a.c. signal. The apparatus includes a signal detection circuit for detecting the a.c. signal, a signal splitting circuit for splitting the detected a.c. signal into first and second a.c. signals out of phase with each other by 90.degree.. The signal splitting circuit includes a first order lag circuit having a phase lag, a subtractor, and first and second amplifying circuits. The apparatus also includes a phase compensation circuit coupled to the signal splitting circuit for receiving the first and second a.c. signals from the signal splitting circuit and for advancing the phase of an output signal of the apparatus by the phase lag of the first order lag circuit. The phase compensation circuit also includes an amplitude and phase detection circuit for detecting the amplitude and phase of the detected a.c. signal by implementing a polar coordinate transformation of the first and second a.c. signals received from the signal splitting circuit.
    • 一种用于检测直流电压的振幅和相位的装置。 信号。 该装置包括用于检测直流电压的信号检测电路。 信号,用于分离检测到的交流电平的信号分离电路。 信号进入第一和第二个a.c. 信号异相90度。 信号分离电路包括具有相位滞后的第一级滞后电路,减法器以及第一和第二放大电路。 该装置还包括耦合到信号分离电路的相位补偿电路,用于接收第一和第二直流 来自信号分离电路的信号,并且用于使装置的输出信号的相位提前一阶滞后电路的相位滞后。 相位补偿电路还包括一个幅度和相位检测电路,用于检测检测到的交流电的幅度和相位。 通过实施第一和第二等角的极坐标变换来发出信号。 从信号分离电路接收的信号。