飞机弹射座椅内部分支线束网络的建模与仿真

Modeling and Simulation of Internal Branch Wiring Harness Network of Aircraft Ejection Seat

中文关键词:  弹射座椅  时域反射法  分支线束  特性阻抗

英文关键词:ejection seat  TDR  branch wiring harness  characteristic impedance

中文摘要:

      飞机弹射座椅分支线束网络是弹射座椅内部信息交互和信号传输的关键部件。为提升其电气测量的精度和可靠性，基于时域反射法（Time Domain Reflectometry,TDR）对飞机线束网络进行建模与仿真。首先，针对弹射座椅关键模块——线束网络，构建一般线束的电气等效模型，对其参数进行分析；然后，以弹射座椅内部分支线束网络为研究对象，采用TDR分析故障传播过程；最后，在MATLAB中搭建相应的仿真模型进行验证分析。仿真结果表明，在弹射座椅内部，高频脉冲信号不仅会在故障位置发生信号的透射和反射，还会在分支转接点处发生信号的透射与反射。

英文摘要:

      The branch wiring harness network of the aircraft ejection seat is a key component for information exchange and signal transmission inside the ejection seat.To improve the accuracy and reliability of its electrical measurement,the aircraft wiring harness network is modeled and simulated based on time domain reflectometry（TDR）.Firstly, for the key module of the ejection seat,the wiring harness network,a general electrical equivalent model of the wiring harness is constructed，and its parameters are analyzed.