FlightGear And FPGA Based Helipcopter Visual Flight Simulation System

In the field of helicopter research, visual simulation system has very importantapplications. This paper aims to develop a functional, system integrity visualsimulation system which is based on FlightGear software, finding the best way foraircraft development. This paper is based on FlightGear software, with the appropriatesemi-physical simulation equipment, established an efficient internal communicationsystem. Achieve the communication between flight attitude data and protocol analysismodule and semi-physical c, Perfectly meet the needs of engineering practice.First, Studied the visual simulation system of internal communication link systemprinciples. Proposed and developed internal communication protocol independently,including communication protocols between three-DOF helicopter simulationequipment and protocol processing FPGA data module (communication protocol1),and communication protocols between protocol processing FPGA data module andSimulink interface module. Agreements are made of custom coding structure toachieve data frame format. Including preamble data frame, data frame identificationcode, valid data, the end of frame. The Internal internal communication link systemprinciples provide a solid foundation for the visual simulation system.Second, Studied the communication protocol analysis method and its FPGAhardware implementation. For the system of internal communication protocol, a"sliding window" Addressing header address data protocol analysis principle wasmade. Such analytical methods of high efficiency, real-time, ideal for engineeringapplication effect. Also, got the protocol analysis "sliding window" into a physicalrealization of FPGA hardware parsing module, ideally restore data results.Finally, discusseed the connection of the realization of the helicopter visualsimulation system. Relevant findings synthetic vision flight simulation technology andsimulation results, Verified the correctness and effectiveness of internal systemcommunication link system proposed by this project, detected the function of FPGAdata protocol analysis module, Successfully validated the design based on thecorrectness and feasibility of the proposed helicopter FlightGear visual simulationsoftware program. The visual flight simulation system can be widely used in aircraft modeling and controller design-related field of study, and provided a can provide avivid study of the flight control system data analysis, three-dimensional visual effectsdisplay environments.This visual simulation system will be widly used in the future.