| With the rapid development of science and technology and the improvement of living standards,people’s demand for communication rate and communication capacity is increasing,and the laser communication technology of the stars is born in the face of the increasing demand for communication rate and communication capacity.As a new type of communication technology,the laser communication technology of the star has a lot of application potential and the development prospect of the industry.It will also be a hot thesis in the global newsletter.However,the laser communication system is characterized by the fact that there is a distance of communication distance and the stenosis of laser beam,making it difficult to realize the rapid and accurate construction of the satellite between satellites.In order to ensure the ability of the laser communication stability construction chain,it is the speed of laser communication and other sensors,and it is especially important for the rapid capture of laser signals and real-time tracking,and also the focus of this thesis.Firstly,the thesis introduces the concept of laser communication system and its capture tracking chain process,and analyzes the overall demand of the laser communication system of the star,and obtains the performance indicator requirements of the laser communication terminal in the preliminary trace stage.The problem is analyzed in the case of precision problem,considering the accuracy of a single electromagnetic position sensor,and by adopting the absolute synchronous sensor of measuring precision as the position sensor of the servo transfer station,and through the method of the fusion of the method,the accuracy of the accuracy of the measurement accuracy of the electromagnetic position sensor is solved indirectly by the method of the fusion of the method of the method of the fusion of the method.This thesis takes the FOC(field-oriented control-oriented control technology for real-time control of the brushless dc motor,and studies the real-time control of the BLCD in the blcd(brushless dc machine)at low speed.And through the pid parameter adjustment,the accuracy of the servo transfer machine is within 300 urad.To meet the precision requirements of the atp(acquisition tracking and pointing)servo platform. |
