一種內(nèi)插器,特別是在計量裝置中和光柵一起使用,用于檢測位置,它接收正交的輸入信號. An internal interpolator, particularly in the metering apparatus and used with the grating, for detecting the position, which receives the quadrature input signal. 對輸入信號中的一個進行平方并把兩個輸入信號乘在一起, 以提供頻率為輸入信號頻率二倍頻的進一步的正交信號. Of an input signal is squared and the two input signals are multiplied together to provide a frequency of the second harmonic of the input signal frequency quadrature signal further. 也對進一步的信號進行平方,并把進一步的信號乘在一起,以提供頻率為輸入信號頻率4倍頻的輸出信號.