基于dSPACE的挠性卫星姿轨控实时仿真系统  

Real Time Simulation System for Attitude and Orbit Control System of Flexible Satellite Based on dSPACE Multiprocessor Systems

作　　者：翟坤[1] 杨涤[1] 朱承元[1] 王新 

机构地区：[1]哈尔滨工业大学航天学院,哈尔滨150001 [2]上海航天控制工程研究所,上海200233

出　　处：《航天控制》2004年第1期17-25,共9页Aerospace Control

摘　　要：以某在研挠性卫星星载计算机在回路中的仿真试验为背景 ,利用dSPACE多处理器系统构建了卫星姿轨控实时仿真系统。介绍了实现该系统的软、硬件构成。重点介绍了实现该实时系统的关键———如何用dSPACEDS4 2 0 1s板上的RS2 32 / 42 2串口模拟星载计算机与各路姿态敏感器、反作用飞轮串口之间的复杂通信及串口通信Simulink仿真模型的设计。本文用Simulink ,Stateflow和S函数混合建模方法 ,设计了该实时系统的串口通信接口模型。并以星上自主模式为例进行了实时仿真。仿真结果证明了本文设计的卫星姿轨控实时仿真系统的可行性和串口通信接口模型设计的有效性。Based on the dSPACE multiprocessor systems, a real time simulation system of certain flexible satellite's Attitude and Orbit Control System ( AOCS ) is designed for on-board computer-in-the-loop simulation. This paper introduces the software and hardware architecture of this real time simulation system and focuses on the key to simulation of RS 232/422 serial communication between on-board computer and attitude sensors using dSPACE DS 4201s serial port hardware boards.Simulink models for RS 232/422 serial communication of this real time system are designed based on Simulink, Stateflow and S-function toolboxes. The real time simulation of satellite's attitude and orbit control in autonomous mode is completed on the dSPACE systems. Results of simulation show the effectiveness of this real time simulation system and the design of Simulink models for serial communication.

关 键 词：实时仿真系统 挠性结构 卫星 姿态控制系统 轨道控制系统 串口通信 DSPACE 

分 类 号：V448.2[航空宇航科学与技术—飞行器设计]