Design And Study On Automatic Carrier Landing System

Carrier landing control system is a key technology of modern aircraft carrier/carrier-based aircraft system. This is because with the decline in carrier-based aircraft flying, landing control system must have required the ability of the high precision orbit control, it enables carrier-based aircraft to land accurately in accordance with the ideal decline orbit, in order to achieve the purpose of safe landing. In this dissertation, carrier-based aircraft was designed and analyzed the system's control effect of its decline phase, and improved its control rate of vertical guidance.First of all, based on the relevant knowledge of the flight mechanics and aerodynamics in terms of coordinate of speed, made mechanical analyses in the flight of carrier-based aircraft, established a longitudinal small perturbation equation of state about the carrier-based aircraft, and analyzed inherent dynamic characteristics in this state. In order better to illustrate the environmental interference of the carried-base aircraft carrier landing, conducted a modeling analysis of the both, according to causes of the stern flow and atmospheric turbulence.Reading on the basis of an extensive literature, referred to the actual general structure of carrier-based aircraft carrier landing control system, and chose the order of feedback parameters through from the inside out, and designed the flight control system and thrust control system. In order to more accurately control the attitude angle of the carrier-based aircraft in the decline. Made a discussion about the compensation part of vertical guidance control law and deck motion, based on the design of flight control system and thrust control system. Completed the overall design of the control system, and made a closed-loop simulation on the entire process of landing.The fact is analysed that automatic warship navar characteristic is in progress to the same carrier-based machine. Then, we improved the vertical guidance law, and introduced the fuzzy control theory. With routine PID, the controller mixes up the PID controller combining with being composed of each other. Parameters can be tuned on line taking advantage of the fuzzy controller. Through simulation, combined with carrier landing test, the statistics of the landing errors showed that fuzzy PID control is more effective than conventional PID control to improve the quality of landing control system, and reduced carrier landing error.