KEYWORDS: Antennas, Control systems, Data transmission, Fuzzy logic, Satellites, Field programmable gate arrays, Control systems design, Data modeling, Analytical research, Telecommunications
The space data transmission antenna system is an important channel for the telemetry data transmission of the satellite platform to the ground. Therefore, the logarithmic antenna has high requirements for the pointing stability to the ground. The pointing accuracy of the data transmission antenna is seriously affected by the vibration of the satellite platform. Therefore, this paper analyzes the vibration of an orbiting spaceborne data transmission antenna, models, simulates, analyzes and calculates the logarithmic transmission antenna, optimizes the antenna system structure based on this, and designs a fuzzy adaptive PID control system under decentralized control for closed-loop control, The simulation test of the antenna system under the real vibration environment is carried out through the vibration test. The results show that the antenna system has stable performance and can effectively suppress the vibration, which verifies the reliability and feasibility of the antenna system. At present, the data transmission antenna has been put into orbit with satellite launch, and its performance indexes are stable, the research results can be used as a reference to improve the vibration safety of relevant spaceborne antennas.
KEYWORDS: Control systems, Field programmable gate arrays, Solar energy, Control systems design, Vibration control, Bridges, Transformers, Switching, Sun, Analog electronics
The space flexible solar wing is easy to be affected by the vibration from the satellite platform, which has characteristics of low frequency, dense frequencies and large static deformation. In order to ensure that the extension mechanism of the large flexible solar wing can realize the reliable, repetitive and stable deployment and retraction of the sun tracking, adynamic model of the flexible solar wing is established. On this basis, a double closed-loop control strategy of improved sliding mode and variable integral PID regulator is proposed to realize the double closed-loop control system of speed and current. Finally, the experimental system of peripheral circuit, driving circuit and position detection circuit based on single chip anti fuse FPGA is designed, and the experimental verification of large flexible solar wing deployment control based on FPGA is realized. Through the experimental verification, the system can achieve the vibration suppression function of the extension mechanism with high disturbance, and realize the engineering application that the large flexible solar wing can be repeatedly and smoothly unfolded and folded which has a certain application value and provides a reference for the subsequent engineering application.
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