基于PXI的多功能卡在卫星测试系统中的研究

Research on Multifunctional Card Based on PXI in the Satellite Test System

中文关键词:  姿态控制  动量轮转速  多功能卡  DSP芯片  FPGA器件

英文关键词:attitude control  momentum wheels speed  multi-function card  DSP  FPGA device

中文摘要:

      在卫星技术及应用方面，卫星的姿态确定和控制是很重要的。由于各种干扰，卫星在空间的姿态角和姿态角速度往往会偏离设定值，这时就要进行控制和调整。主要介绍了卫星姿态控制系统的工作原理，并设计了一款测量卫星动量轮转速的多功能卡。设计中采用了DSP芯片TMS320C6713作为控制器，以及一款编程灵活、采集速率快的FPGA器件XC3S700A进行对动量轮转速的测量分析及控制输出，通过PXI接口将控制信号和数据传送给主CPU，然后与星体进行动量交换，进而控制卫星姿态，使其满足特定任务的需要。

英文摘要:

      In satellite technology and applications,the attitude determination and control of satellite is very important.Because of all sorts of interference,the attitude angle and the attitude angular velocity in space often deviates from the setting value,then it will need control and adjustment.The working principle of satellite attitude control system is mainly introduced,and a kind of multi-function card for measuring satellite momentum wheels speed is designed.In this system,a DSP chip TMS320C6713 is used as controller,and adopted XC3S700A which programmed flexibly and sampled fast to measure momentum wheels speed,then the data and control signal will be sent to CPU control system through the PXI interface.After that,it will used for momentum exchange with stars and then control satellite attitude to meet the needs of the specific task.