卫星姿轨控半物理仿真测试系统

Research on Satellite AOCS Semi-Test Simulation Test System

为了保证卫星发射前的地面姿轨控半物理试验的顺利进行,研制了姿轨控分系统半物理仿真地面测试系统;为了满足相关类似卫星型号的通用化测试,本套仿真测试系统采用通用模块化的设计架构,同时采用现今主流的PXI总线测试技术(配合VPC转接电路板);使用标准通用cPCI总线板卡以及部分自制FPGA可编程cPCI总线板卡实现各测试模块的功能;这种架构不仅能实现功能模块化,便于后续的功能扩展及维修,同时具有可靠性高、搭建时间快、可维护性强的优点,且体积小,稳定性强,能适应不同测试对象的测试环境条件,适合长途运输;文章介绍了系统的总体设计结构,重点介绍了模拟总体电源、动力学仿真机、电信号源、程序加载以及外围设备等硬件系统功能,以及相关配套软件的基本功能;测试系统经过与卫星的星地联试,功能性及使用性均得到了验证,测试结论符合设计之初功能性及通用化的构想。

In order to keep the satellite AOCS （Attitude Trajectory Control System） semi--physical test smoothly, the ground testing system of AOCS semi--physical simulation was designed. In order to meet the universal test of similar satellite models, the simulation test system adopts a general modular desigh framework,. As the same time, the current mainstream PXI bus testing technology is adopted coop- erating with VPC switching circuit board. The function of each module is realized by using standard cPCI bus card and some home--made FPGA programmable cPCI bus card. This architecture can not only realize the function modularization, but also facilitate the subsequent function expansion and maintenance. Meanwhile, the utility model has the advantages of high reliability, fast construction time and strong maintainability, and has the advantages of small size and strong stability, and can be adapted to test environment conditions of different test objects, and is suitable for long--distance transportation. This paper introduces the overall design structure of the system, the overall pow- er simulation, dynamic simulator, electrical source interface, programming load application interface, peripheral equipment and other hard- ware were introduced respectively. The test system has been verified by satellite and ground test. The function and usability of the test system have been verified. The test result accords with the conception of design function and generalization at the beginning of the design.