基于多软件的微小卫星多领域建模与仿真研究

Researches of Micro-satellites' Multidisciplinary Modeling and Simulation Based on Software Interfaces

微小卫星是由多个学科构成的复杂系统,各学科间存在着复杂的耦合关系,针对微小卫星多领域建模与仿真问题,提出了基于STK、ADAMS、ModelSim和Matlab/Simulink等商用软件接口的微小卫星多领域建模与仿真方案,给出了多学科建模与仿真平台体系结构,提出并解决了耦合建模、软件接口和协同仿真等多项关键技术。最后,建立由微小卫星中耦合关系较强的姿态控制、结构动力学、星载计算机和电源分系统构成的原型系统,针对微小卫星大角度姿态控制模式进行了仿真,仿真结果验证了本文所提出的多领域建模方法的有效性和仿真平台的可行性。

Micro-satellites are complex systems, constituted by several disciplinaries, and there are complicated multidisciplinary coupling relationships between different disciplinaries. Aiming at modeling and simulation of micro- satellites, a scheme for multidisciplinary modeling and simulation of micro-satellites, based on commercial softwares such as STK, ADAMS, ModelSim, Matlab/Simulink and so on, was proposed. The architecture of the modeling and simulation platform was also given. Then some key techniques such as coupling modeling, software interface and co-simulation were proposed and solved. At last, a prototype system composed of attitude control, structure dynamic and power supply was built, and a large angle maneuver of the prototype was simulated. The simulation result verifies the efficiency of modeling method and the feasibility of the platform.