無(wú)人地效翼船氣動(dòng)仿真與飛控系統(tǒng)研究
[Abstract]:Ground effect wing ship (Wings In Ground Craft) is a kind of special aircraft which usually flies close to the sea surface / ground, and can realize very low altitude flight ability with the help of "ground effect" in this flight state. However, according to the current situation of the control technology of the global ground effect wing ship, the application field of this kind of aircraft flying in the water vapor medium is not expanded because the theoretical knowledge of the research and development of the ground effect wing ship is not mature at present. However, with the development of computer technology, computational fluid dynamics (CFD) has been developed rapidly. This method can be used as a theoretical reference for the aerodynamic layout design and kinematics model establishment of a ground-effect wing ship. At the same time, the flight control system, as the flight control core of the ground effect wing ship, is responsible for the tasks of information collection, control information calculation and data communication during the whole flight. Therefore, a stable set of flight control system is designed for the ground effect wing ship. The flight control system suitable for its flight characteristics is of great significance. Firstly, this paper introduces the main research methods of aerodynamics related to the ground effect wing ship and the FLUENT software which is often used in numerical fluid calculation. In this paper, the Russian advanced Caspian Monster is selected as the prototype, the 3D modeling software CATIA is used to reconstruct the 3D model, and then the 3D model is imported into the ICME software for gridding. Finally, FLUENT numerical software is used to calculate the aerodynamic parameters of the gridding model. At the same time, when it navigates in the ground effect area, its navigation platform changes frequently. In order to realize the long-term stable navigation, it is necessary to develop a stable and reliable flight control system. In this paper, the flight control system of the ground effect wing ship is designed based on the experience of the design of the fixed-wing flight control system and the aerodynamic numerical data. Then, the concept of flight control and mission management is adopted separately in hardware, and the overall scheme of flight control system architecture with dual-chip system chip as the core is determined. Two TMS320 F2812 microchips are used as main controller, which are responsible for flight control and navigation data solution. The main control module, the sensor module, the steering gear module and the interface module are established on this architecture to reduce the coupling degree of the system and complete the system design by modularization. The software design also follows the idea of modular design and realizes the driving design of each unit module in the bottom layer. The algorithm of heading angle of sins attitude module is analyzed and the attitude and altitude data are analyzed. Finally, according to the characteristics of ground effect aircraft, a real-time and stable control system is designed by using PID controller. The longitudinal and lateral control laws of ground effect aircraft are simulated by SRO optimization software package in MATLAB. The simulation results show that the controller design is reasonable and has good application significance.
【學(xué)位授予單位】:南昌航空大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2015
【分類(lèi)號(hào)】:V249.1;V279
【共引文獻(xiàn)】
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