Design And Implementation Of Flight Evaluation System Based On Component

In recent years,the development of UAV has become increasingly prosperous,while UAV flight quality standards have developed slowly.Flight quality,which mainly evaluates the stability and maneuverability of the aircraft,can be defined as the evaluation of the dynamic response of the aircraft to the command.Flight quality specification is the basis for evaluating flight quality and it plays very significant normative and guiding role in aircraft design,development,testing and use.Therefore,the research of how to define,how to calculate,how to evaluate the quality of UAV flight is particularly meaningful.Firstly,the objective evaluation of flight quality is discussed.With Taking into account the various aspects of remote operation of UAV and doing analysis of control process,the thesis demonstrates the feasibility of referring to the flying quality specification of manned aircraft.The thesis points out that the model of evaluation can not be only the dynamic model,but should be calculated from the direct joystick.The flight quality model will be established by considering the dynamic response characteristics of each link.The equivalent system method is used to evaluate the flight quality of UAV,so that the evaluation of flight quality is more comprehensive.The study about the equivalent system fitting algorithm based on pattern search and simulated annealing algorithm makes the evaluation result more accurate.With referring to man-machine evaluation criterion,the thesis makes some necessary adaptable modifications and establish evaluation index system.Secondly,we mainly study the subjective evaluation of flight quality.A flight quality monitoring software is designed and implemented based on a data centric framework.Thus,the flight quality is evaluated by displaying the parameters,instruction shape of the flight state real time.In view of the characteristics of UDP and the requirement of data transmission accuracy,a network communication protocol based on UDP is designed to improve the accuracy of data transmission.Aiming at the large amount of data storage and calculation in the flight evaluation process,the conceptual structure,logical structure and interaction design are designed and implemented database based on MySQL.Finally,the flight evaluation system is designed from top to bottom by using the object-oriented software engineering idea.Considering the idea of COM component and design pattern,eachcomponent of the system is realized,and then the component is stored in the system to realize the flight evaluation system.Each component and module is uncoupled from each other in this system.In order to verify the function and performance of the flight evaluation system,the actual evaluation method of the flight evaluation system is carried out by using the actual UAV flight simulation platform.The test results show that the flight evaluation system meets the design requirements.This thesis is established in easy to expand and reusable design,which greatly reduced the software development cycle and maintenance costs.At present,the flight evaluation system has been applied to the actual development of UAV to assist UAV R & D and technical verification.In this thesis,the research and implementation of the flight evaluation system has some reference value for the research and development of similar flight evaluation system.