虚拟测试技术在卫星研制中的应用

Application of Virtual Test Technology in Satellite Development

针对卫星研制过程中技术难度跨越大和“阶段交叠,多线并行”等问题,提出一种虚拟测试技术.该技术以虚拟测试平台为依托,将星上软件嵌入虚拟目标机中,并将其与动力学仿真软件、部件仿真软件和自动化测试软件共同运行于一台PC机上,实现了软件运行的真实底层环境、软件各项功能、对外接口的模拟.虚拟测试具备“全软件工作”和“半实物工作”等多个模式,既能采用全虚拟部件运行,也支持接入真实部件,可应用于卫星各个研制阶段.和传统纯硬件测试相比,虚拟测试大大提前了测试时机,丰富了测试手段,同时缩短了测试周期,提高了卫星研制效率,节约了研制成本,具有较强的工程推广价值.

For the problems of great technical difficulty and multi-line parallel overlapping of phases in satellite development,a virtual test technology is proposed in this paper.Based on virtual test platform,the onboard software is embedded in the virtual target and runs on a PC together with the dynamic simulation software,parts simulation software and automatic test software.The technology realizes the simulation of real underlying environment,software-function and external interfaces.The virtual test can be used in all stages of satellite development,and has multiple modes such as pure software and semi-physical,which can not only run with virtual equipment,but also support access to real equipment.Compared with traditional pure-hardware tests,virtual test can greatly advance the test time,enrich the test means,reduce test cycles,improve efficiency of development and have lower cost of development,which also has high engineering value.