Rotating Axis Through Axis High-speed Wireless Optical Communication Technology Research

Rotary axis systems are used in a wide range of applications,especially in the military field,where optoelectronic rotary tables play a vital role in the air-to-air tracking and targeting process.With the increasing amount of transmitted data,new requirements and challenges are put forward for the data transmission rate of continuous rotary axis wear axis system.The previous transmission methods of electric slip ring and fiber optic slip ring can no longer meet the demand of signal transmission rate of rotary axis system.With the development of laser communication technology,the non-contact signal transmission method has become an important development direction for the signal transmission of rotary axis system.This paper takes rotary transmission signal technology as the background,relying on the close range wireless optical communication high-speed transmission technology,and designs a rotary axis through-axis high-speed wireless optical communication system,aiming to realize high-speed and stable data transmission in rotary axis system.The main research contents of this paper are as follows:(1)To establish a high-speed data transmission link model of rotary axis based on wireless optical communication technology,analyze the influence of alignment deviation and rotary axis rotation error on communication performance of communication system,carry out simulation research of close range wireless optical communication link,analyze the interaction mechanism of deviation and link redundancy,construct a numerical model of detection and reception power based on each power loss coefficient of the system under the premise of ensuring communication performance,and obtain the system The optimal out-offocus offset of the system is obtained.The optical gain and air channel attenuation equations are combined to determine the communication system parameters and scheme.(2)Based on laser transmission theory as well as aberration theory,the structural parameters of the optical system are calculated,and the system optimization is completed by optical design software.Under the optimal out-of-focus deflection,the energy loss due to the maximum angular deflection and radial deflection of optical communication optical path transmission is analyzed.Combining the numerical simulation results and practical requirements,the structural design of the communication transceiver module and beacon transmitter module of the optical communication system is carried out,and the influence of system strain on the communication performance under temperature load is analyzed.(3)The experimental platform for close range wireless optical communication was built to complete the experiments of detecting the maximum redundant deflection of communication under the optimal out-of-focus offset of the optical communication system.The experimental results show that the maximum angular deflection of the system is ±0.275°at 1.364 mm,which is 2.2% different from the theoretical simulation,and the maximum radial deflection is ±10.78 mm,which is 1.8% different from the theoretical simulation.The experiment of wireless optical communication transmitting and receiving based on the rotary axis is built,and the 1 Gbps transmission rate test of wireless optical communication is completed to verify the feasibility of wireless optical communication on the rotary axis.