The Simulation Technology Based On Scenario For Spacecraft Control System

Spacecraft simulation technology is a combined product of system simulation and aerospace engineering, which is a cornerstone of aerospace industry. The reliability of the spacecraft control system determines the possibility of success of the flight mission, thus a simulation test to the control programe is of vital importance.A simulation model of a control system is always built for a specific task, instead of being universally functional. To solve that problem, it is necessary to create a reusable model base and a simulation supporting structure, in order that the physical parameters of the spacecraft are not limited conditions in the simulation process. Therefore, this paper is mainly based on the idea of reusability of simulation models and scenario modeling technique and the content is as following:Firstly, the control system of spacecraft is researched, on the basis of which, a demand-supply analysis of universalized simulation systems is performed. Based on reusability of simulation models and scenario modeling technique, a universalized simulation framework of spacecraft is designed, which can be used to generate a simulation task, run the simulation system and analyze the simulation results, in order to evaluate the feasibility of a flight mission design.Then, a database supporting the simulation of spacecraft control system is built, including simulation model base, scenario modeling base and simulation data base, and submodels interact with each other to reach the simulation goal. The effort is focused on building and analyzing the simulation model base and scenario modeling base.Finally, the key techniques, such as guiding mechanism of simulation model base and allocation of scenarios are obtained based on the universalized simulation framework of spacecraft control system.Then one specific exploration mission of an asteroid is taken as an example,the scenarios are allocated and operated in the system, it has proved feasibility of the simulation framework through the simulation application.