基于dSPACE的卫星控制实时仿真系统设计

为满足某在研大型挠性卫星计算机在回路中的仿真需要,利用dSPACE多处理器系统设计了卫星姿态和轨道控制实时仿真系统。介绍了该系统的软、硬件构成。以星载计算机与惯性基准单元串口通信为例,重点介绍了采用RTI模块、Simulink和Stateflow,实现该实时系统的串口通信建模方法。在星上自主模式下,对该实时系统进行了实时仿真。仿真结果证明了设计的卫星姿态和轨道控制实时仿真系统和串口通信接口模型的有效性。此方法对dSPACE实时仿真系统在航空航天领域的工程应用具有参考价值。

Design of real-time simulation system for satellite control based on dSPACE system

To meet the need of on-board computer-in-the-loop simulation, real-time simulation system for attitude and orbit control of a flexible satellite is designed based on dSPACE multiprocessor system. The software and hardware architectures of this sytem are presented. With the serial communication between on-board computer and the inertial reference units as an example, the modeling approach of serial communication using RTI, Simulink and Stateflow is particularly addressed. The real-time simulation of the attitude and orbit control system in autonomous mode is completed on dSPACE system. The simulation results show the effectiveness of this real-time simulation system and the modeling approach of serial communication. It is valuable for the practical applications of dSPACE real-time simulation systems in the aerospace engineering.