分布电容对引信共线装定系统信息传输特性的影响及其优化

doi:10.12382/bgxb.2022.0406

摘要/Abstract

摘要：

针对引信共线装定过程中分布电容影响装定可靠性的问题,建立基于装定器模块、能量与信息传输模块、引信电路模块的等效电路模型。分别研究在装定输出信号为高电平时和低电平时两种情况下,分布电容对共线装定系统信息传输特性的影响。得出高电平时分布电容对共线装定系统影响较小的结论,并推导低电平时引信识别到的接收信号的低电平脉宽与分布电容的关系式。提出两种优化方法,一种利用二极管屏蔽外部因素如并入电缆引入的电容;另一种利用并联一个阻值较小电阻的方法来降低系统的时间常数,从而提高引信识别到的低电平脉宽,提高装定可靠性。经仿真和实验验证,两种方法均提高了引信识别接收信号的可靠性。

关键词: 引信, 装定系统, 分布电容, 可靠性

Abstract:

An equivalent circuit model based on the setter module, the energy and information transmission module and the fuze circuit module is established for the effect of distributed capacitance on the setting reliability in the process of fuze collinear setting. The influences of distributed capacitance on the information transmission characteristics of collinear setting systemwhen the setting output signal is at high level and low level are studied, respectively. The conclusion is drawn that the distributed capacitance has little influence on the collinear installation system at high level, and the relationship between the low-level pulse width of the received signal recognized by the fuze and the distributed capacitance at low level is deduced. Finally, two optimization methods are proposed, one uses a diode to shield the external factors, such as the capacitance introduced by the incorporated cable, and the other uses a parallel-connected resistor with a smaller resistance to reduce the time constant of the system, thereby improving the recognition rate of the fuze. The low-level pulse width improves the reliability of fuze setting. The simulation and experimental verification show that both methods improve the reliability of the fuze to identify the received signal.

Key words: fuze, setting system, distributed capacitance, reliability

中图分类号:

TJ430

李昊, 李豪杰, 原红伟, 岳中豪, 马海涛. 分布电容对引信共线装定系统信息传输特性的影响及其优化[J]. 兵工学报, 2024, 45(1): 319-327.

LI Hao, LI Haojie, YUAN Hongwei, YUE Zhonghao, MA Haitao. Influence of Distributed Capacitance on Information Transmission Characteristics of Collinear Setting System of Fuze and Its Optimization[J]. Acta Armamentarii, 2024, 45(1): 319-327.

图/表 19

图1 共线装定系统原理图

Fig.1 Schematic diagram of collinear setting system

图2 共线装定系统等效电路模型

Fig.2 Equivalent circuit model of collinear setting system

图3 引信解码的低电平持续时间

Fig.3 Low level duration for fuze decoding

图4 装定输出电压Vi波形

Fig.4 Set output voltage Vi waveform

表1 仿真值设定说明

Table 1 Setting of simulation values

参数	数值
装定输出电阻R₁/Ω	20
装定输出模块接地电阻R₆/kΩ	100
电缆等效电阻R₂、R₃/Ω	3.8
传输电缆等效的分布电容与击发电缆引入的电容C₁/nF	9.28
接收装定信号的接收电阻R₄/kΩ	6.3
储能电容C₂/μF	200
储能电容的等效负载R₅/kΩ	10

图5 共线装定系统仿真模型

Fig.5 Simulation model of collinear setting system

图6 有无分布电容对波形畸变的影响

Fig.6 Influence of distributed capacitance on waveform distortion

图7 传输信号畸变图

Fig.7 Transmission signal distortion

图8 装定输出信号Vi为高电平时的装定模型

Fig.8 Setting model when set output signal Vi is high

图9 装定输出信号为低电平时的装定模型

Fig.9 Setting model when set output signal Vi is low

图10 不同分布电容对波形畸变造成的影响

Fig.10 Influence of different distributed capacitances on waveform distortion

图11 利用二极管隔离部分电容后共线装定系统的原理图

Fig.11 Schematic diagram of collinear setting systemafter using diode to isolate some capacitors

图12 增加二极管后的共线装定系统仿真模型

Fig.12 Simulation model of collinear setting system with diode

图13 利用二极管屏蔽分布电容后的传输信号波形

Fig.13 Transmission signal waveform after shielding the distributed capacitance by diode

图14 利用二极管优化前后的实验波形

Fig.14 Experimental waveforms before and after optimization using diodes

图15 并联电阻后的系统原理图

Fig.15 Schematic diagram of the system after paralleling resistors

图16 并联电阻后的共线装定系统仿真模型

Fig.16 Simulation model of collinear setting system with parallel resistors

图17 并联不同电阻之后波形的畸变程度

Fig.17 Distortion degree of waveform after parallel connection of different resistors

图18 并联1kΩ阻值电阻前后的实验波形

Fig.18 Experimental waveforms before and after paralleling 1kΩ resistors

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