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本文介绍无线电引信常用积分电路的工作原理和特点,给出了在等幅矩形脉冲作用下的积分计数公式。在正弦信号作用下,这种变参量电路的求解涉及超越方程,无法解析求解。本文以实际电路为例对等幅矩形波与正弦波输入的特性作了比较。带助于计算机求解的方法,给出了积分计数特性,并分别绘制了时间特性曲线与相平面图,有助于多普勒无线电引信低频电路的分析和抗干扰性能的研究。
This paper introduces the working principle and characteristics of the common integration circuit of the radio fuze, and gives the integral counting formula under the action of rectangular amplitude pulse. Under the action of sinusoidal signal, the solution of this variable parameter circuit involves the transcendental equation and can not be solved analytically. In this paper, the actual circuit is taken as an example to compare the characteristics of square wave input with sine wave input. With the help of computer solution method, the integral counting characteristic is given, and the time characteristic curve and phase plane plotted separately are helpful for the analysis and anti-interference performance of Doppler radio fuze low-frequency circuit.