摘要
为了提高航天器的有效载荷比,针对目前姿态控制系统中采用有线连接的问题,以单轴气浮台为仿真平台,基于无线自组织网络构建了一种刚体航天器姿态控制半实物仿真系统,提高航天器设计的灵活性和可靠性。首先详细介绍了该系统的总体构成和方案设计,星载计算机采用双ARM冗余的体系结构,光纤陀螺、星载计算机、反作用飞轮以及动力学仿真机之间通过无线自组织网络节点互连。其次,介绍了姿态控制系统的数学模型及控制算法。最后,利用该系统对航天器三轴正常姿态稳定控制进行了半实物仿真。仿真结果表明,姿态控制精度能够满足任务需求,同时校验了仿真系统设计的合理性和正确性。
To increase the effective load ratio of spacecraft,and to solve the wire connected problem of current attitude control system,a hardware-in-the-loop simulation system for rigid-body spacecraft attitude control based on the mono-axis air-bearing table and ad hoc wireless network was established,and the flexibility and reliability of the spacecraft design were greatly enhanced.Firstly,the constitution and scheme design were introduced in detail;the dual ARM redundant architecture was employed for the on-board computer,and the fiber gyro,on-board computer,reaction wheel and the dynamics simulation computer were connected via the ad hoc wireless network.Secondly,the attitude kinematic equation and dynamic equation were introduced and the control algorithms were proposed.Finally,the three-axis stable control for spacecraft was conducted in the simulation system.The simulation results show that the control precision is satisfied to meet the mission requirements and the correctness of the software and hardware interfaces are also verified.
出处
《系统仿真学报》
CAS
CSCD
北大核心
2013年第6期1364-1368,1375,共6页
Journal of System Simulation
基金
国防预先研究基金项目(51320010201)
关键词
无线自组织网络
航天器
姿态控制
单轴气浮台
半实物仿真
Ad Hoc wireless network
spacecraft
attitude control
mono-axis air-bearing table
hardware-in-the-loop
