digital simulation platform for space operations mission verification
- Paper number
IAC-17,B6,IP,11,x36970
- Author
Ms. Jing Yuan, National Key Laboratory of Aerospace Flight Dynamics, Northwestern Polytechnical University, China
- Coauthor
Prof. Yuan Jianping, National Key Laboratory of Aerospace Flight Dynamics,Northwestern Polytechnical University,Xi'an, China
- Coauthor
Mr. Chi Zhang, China
- Coauthor
Dr. Mingming Wang, National Key Laboratory of Aerospace Flight Dynamics,Northwestern Polytechnical University, China
- Year
2017
- Abstract
Space operations are the subjects of hot research activities in recent years. The mission process simulation under digital platform is an important way to certify the mission design index as well as technical feasibilities, and it relates to complex system simulation methods such as multidisciplinary coupling, multi-language modeling and spacecraft dynamic simulation. This paper introduces the design of a digital simulation platform for space operations mission verification. The platform has the advantages of high generality and extensibility, being easy to build up new task and high fidelity of operations simulation. The platform is composed of digital spacecraft dynamic simulation system, space situation information calculation system, visual display system and task operation system. It adopted the Functional Mockup Interface(FMI) Standard to achieve multidisciplinary models coupling and interactivity among the different modeling tools or languages and take advantage of the high efficiency and real-time design of FMI standard to implement the digital simulation platform. The platform is connecting with the ground TTC system through network communication module and could receive on-orbit spacecraft TTC data as its initial values to do simulation experiments for on-orbit missions. It has interface to access real time data of physical experimental platform to build up a half-physical simulation experimental environments. The task operation system is the master control unite of the platform. It loads, configurations , starts and controls the simulation task process either in automatic or in manual mode. The task process could be written into Python scripts which could concurrently run with the FMUs(Functional Mockup Units) and control the FMUs through parameterize or access FMU interface. The Control&&Command instructions or parameters also can be sent to the simulation system through operation the variable slide or input instructions in the command window of the system interface. Unity3D is adopted to implement the visual display system which includes 2D sub-satellite display scene, 3D flight trace display and 3D space manipulation display. Configuration tool is developed to map the 3D objects in visual scene with simulation physical variables for complex space control mechanism, which greatly improves platform's generality and extensibilities. In this platform, mission sceneries could be built efficiently by defining composition of spacecraft, parameterize space environment, scripting mission procession, and configuring visual scene. The last part of the paper took a typical space operation mission about a robotic arm deployed to capture an on-orbit target to demonstrate the functions of the platform.
- Abstract document
- Manuscript document
IAC-17,B6,IP,11,x36970.pdf (🔒 authorized access only).
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