某全動式地球站天線伺服系統(tǒng)的設(shè)計與實現(xiàn)
[Abstract]:The antenna servo system can accurately control the working parameters and state of the earth station antenna, improve its automation level and working precision, realize the working effect of the earth station antenna, and guarantee the receiving intensity of the link signal. It is of great significance to maintain the state of operation of satellite communication system. In this paper, the servo system of a 13m Ka full-acting antenna is studied and designed, and the conventional step tracking and memory tracking algorithms are optimized, so that the antenna can be accurately and stably aligned with the target satellite. The application requirement of antenna servo system of earth station is analyzed in the overall level. The common tracking methods of earth station antenna are compared and analyzed, and the step tracking scheme is adopted in this system. Based on the working principle and structure of servo system, modularization is carried out in the overall design scheme. The design scheme of each module is discussed, and the optimized antenna servo system combining step tracking and memory tracking is put forward. 2, the hardware design scheme of servo system is given. The hardware part of antenna servo system mainly includes limit detection circuit, security logic circuit, frequency converter drive circuit and power supply design, and so on. The hardware principle or realization circuit of different hardware modules are given. The selection scheme of the important components in the circuit is given. 3. The specific software design scheme of the servo system is given. The software part of the antenna servo system mainly includes the selection of the development environment, the determination of the overall function, the initialization and data preprocessing and control, the realization of scanning and tracking, and so on. The high precision that can be applied to the servo system is proposed. High reliability control algorithms, including digital PID control, step-by-step tracking optimization algorithm, memory tracking optimization algorithm, scanning algorithm and so on. 4, the test environment and test scheme that can be applied to this subject are proposed. The performance of servo system is tested, the test results are given, and the data before and after the optimization of step tracking and memory tracking are compared and analyzed. The results show that the precision of step tracking is greatly improved and the effect of memory tracking is greatly improved. The whole servo system meets the requirements of the target and achieves the expected design goal.
【學(xué)位授予單位】:西安電子科技大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2014
【分類號】:TN820.3
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