基于dSPACE的星载计算机外部实时仿真环境实现

The Implementation of The External Real-Time Simulation Environment of on-board Computer Based on dSPACE Multiprocessor Systems

为测试星载计算机软硬件实时性能,本文基于dSPACE多处理器设计了由模拟星载计算机和星载计算机外部实时仿真环境两子系统构成的卫星姿态控制实时仿真系统。介绍了该系统硬件和Simulink模型总体结构。重点介绍了两子系统间的串口通信接口模型的建模方法。仿真结果证明了星载计算机外部实时仿真环境子系统的可信性和串口通信接口模型的有效性。

To test the real-time performance of the software and hardware of on-board computer, a real-time simulation system of satellite’s attitude control was designed using dSPACE multiprocessor systems. It includes two subsystems, which simulate on-board computer and its external real-time simulation environment respectively. The whole architectures of its hardware and Simulink models are presented. A method modeling the interface models of serial-port communication between two subsystems is proposed. Results of the simulation demonstrate the reliability of the subsystem of the on-board computer real-time simulation environment and the effectiveness of the interface models of serial-port communication.