基于SystemC的航电系统故障建模仿真方法

SYSTEMC-BASED SIMULATION METHOD FOR AVIONICS SYSTEM FAULT MODELLING

面向民用航空维修训练领域,提出一种模块化、层次化的故障行为建模仿真方法。针对航电系统结构复杂、故障种类繁多、信息流难以控制等特点,依据飞机相关手册资料,采用离散事件系统DEVS(Discrete Event System)描述系统的结构和行为,采用电气线性网络ELN(Electrical Linear Networks)计算模型描述系统的电气特性,在System C/System C AMS仿真环境下对系统进行故障仿真。经验证该方法能真实反映正常和故障情况下航电系统电气特性和功能行为,基本满足维修训练仿真要求。

For civil aviation maintenance and training area,we present a modular and hierarchical simulation method for fault behaviours modelling. Targeted at the characteristics of avionics system such as complex structure,variety of fault types,difficult in information flow control,etc.,it simulates the system faults in the simulation environment of System C / System C AMS according to related airplane manuals and materials and using the structure and behaviour of Discrete Event System（ DEVS） description system as well as adopting the electrical characteristics described by electrical linear network（ ELN） computation model. It is verified that the system can factually reflect the electrical characteristics and functional behaviours of avionics system in both normal and fault situations,and basically meets the requirements in maintenance and training simulation.