摘要： 针对惯导系统在载机静止状态下无法提供动态参数的问题,对惯导子系统进行数字仿真。在航电系统仿真中,采用1553B 总线与总线控制器和其他航电、非航电设备交联,通过以太网接收外部激励数据,采用多线程技术实现主备2 个惯导并发运行,设计一种惯导逻辑仿真系统。阐述系统硬件结构和软件设计,建立惯导姿态仿真模型和位置仿真模型,实现惯导各种逻辑子过程。在某型飞机航电仿真系统中的联调证明,该仿真器能够准确接收外部激励源飞行信息、故障状态,经过结算后周期性地向总线控制器输出飞机位置数据、姿态数据等动态参数,执行某型飞机航电设计文档中相关惯导逻辑,并向总线控制器反馈惯导子系统状态。

关键词: 航电仿真, 惯导系统, 仿真模型, MIL-STD-1553B 总线, 以太网, 多线程

Abstract: Inertia Navigation System(INS) can not output dynamic data when plane is not moving. Simulation of INS can solve this problem. In the avionic system simulation,the inertial navigation logic simulator interconnects to bus controller and other avionic or non-avionic subsystem using 1553B bus. It receives exterior incentive data through Ethernet. Using multi-thread can make main INS and backup INS operate respectively. The structure of hardware and the design of software is expatiated. After establishing flight attitude model and navigation position model,the simulator can simulate different kinds of logic sub-process of INS. The test and debug of avionic simulation system proves that,this simulator can receive flight information and fault state from exterior incentive source by rule and line,send position data and pose data of the plane to bus controller periodically after resolving,execute INS logic in the avionic detail design document and send INS state to bus controller.

Key words: avionic simulation, Inertia Navigation System(INS), simulation model, MIL-STD-1553B bus, Ethernet, multi-thread

中图分类号: 

• TP39