Study Of Robust Eigenstructure Assignment In UAV Flight Control Design And Anti Crosswind Landings

In order to solve the problems of characteristic structural configuration methodscan not meet the requirements of the robustness of the system design and thedisadvantages of other existing flight control design theory to study the characteristicsof the structure to improve the robustness of the system configuration processsolutions to meet the system’s reach control response and immunity requirements. Forthe above goals， the paper carried the following research.This paper discusses the response time of the system characteristics and featuresof the relationship between the structure of the system; study the effects of variousfeatures of the structure of the system response time of the system; analyzes thefeasibility of the system to carry out the robust features of structural configurationdesign. Structure is configured to solve the problem of the existence of robustfeatures， characteristics studied conditions for the existence of robust feedbackmatrix structure configuration， interference border issues， configuration issuesrobust feature structures， features robust closed-loop system and other issues.For the application of this method in the flight control design， studied themethod of calculation methods that optimize the allocation calculated eigenvalues;and the method of robust eigenstructure assignment eigenvalues sensitivity indexestablished; optimization feature vectors selection method; interference perturbationmethod of establishing the model as well as the state feedback designed state observer.Among them， the method to establish the characteristics of sensitivity index valueswere analyzed configurable system analysis， system model and method sensitivityindex perturbation exists.Using direct force control，the application of this method is designed wind UAVlanding system. This part of the study include： the impact of aerodynamic shape ofthe UAV landing performance， crosswind landing impact on the UAV modelcommonly used to analyze crosswind landings， direct power generation method， amethod based on the robust features of the structure of the configuration designcontrol rate， according to the classical testing methods to verify the control systemdesign effect. Simulation results show that application of this design of the flight control system with ideal wind landing effect.Finally， according to the requirements of versatility and modular designfeatures robust structure prepared to configure applications. Using the system， youcan learn more about the different features of the structure of the configuration ofrobust methods and traditional design methods and the advantages of this method;understand the method in engineering practice design steps and use. The wholesystem has great versatility， the state equation can be changed to other applicationspecific engineering design. At the same time， by comparison of before and after theperformance of the system modules， the design effect can be further detected， theperformance of the system more intuitive understanding.From the mathematical basis of the feasibility of this structural configurationdesign of robust features， configurability existing conditions， the specificcharacteristics of structural configuration calculation method robust design methodsto carry out extensive research. Characteristics of the existing structure is configuredto improve and develop design theory.