Dissertation > Excellent graduate degree dissertation topics show

Design and Simulation of Flight Control System Based on LQG/LTR Method

Author: QinZuo
Tutor: ZhangWeiGuo
School: Northwestern Polytechnical University
Course: Navigation,Guidance and Control
Keywords: The reproducibility of the linear quadratic Gaussian / loop transfer Flight control Robustness Separation theorem Singular value
CLC: TP273
Type: Master's thesis
Year: 2006
Downloads: 599
Quote: 2
Read: Download Dissertation

Abstract


Due to unmodeled dynamic characteristics will make the system unstable , such as the presence of gust sensor measurement noise interference also often leads to poor system performance , so a crowd widespread concern in the design of the control system is designed with good stability and performance robustness of the controller . Linear quadratic Gaussian / loop transfer reproducibility (LQG / LTR) is a multi- variable frequency domain design methods, the application of the method in this paper to design a robust feedback control system . The simulation results verify the analysis shows that it has good robustness and decoupling characteristics . The paper is organized as follows: the classic frequency domain robust design concept is usually applied to single-input single - output system , the paper first by reference to the concept of singular value extended to multivariable systems . Then , research Kalman filter and state feedback control law is designed to ensure that they have a very good performance ; its combination of design LQG controller based on the separation theorem . Then we expound how to apply the improved LTR method so that the the original LQG design performance can be completely reproduced . Application LQG / LTR method designed flight control system robustness . The aircraft longitudinal , lateral a typical flight mode ( pitch attitude to maintain altitude hold , vertical landing coordinated turn given course correction and lateral deviation ) for the design and simulation . Set forth specific examples of the specific design steps, in the frequency domain and the time domain to obtain a desired characteristic . Design of LQG / LTR with PID controllers were compared . Simulation results show that the LQG / LTR controller has a good performance when the system the influence of interference by the wind ; compared with the PID controller , its advantages , especially in the control under the coupling between the case in the system channel is quite obvious. At the same time , the application of the LQG / LTR method to select the parameters of the computational cost is relatively small . In the last part of the paper , the development of a good interface , easy to operate flight control law design package . Made study confirmed the LQG / LTR controller can effectively achieve the desired control requirements , provides a feasible method for the practical application of the flight control system .

Related Dissertations

  1. Research on Approaches of the Subjective Automated Assessment,TP391.1
  2. Flying Wing Uav’s Stability & Control Character and Design of Auto-landing Control Law,V249.1
  3. Study on Robust Diagnosis and Fault-Tolerant Control Technology for Dynamical Systems,TP13
  4. Monitoring video digital watermarking security,TP309.7
  5. A Note on Portfolio Efficient Frontier Based on GEV under Various Risk Measures,F830.59
  6. Extraction of Seismo-Magnetic Anomalies Suspected and Analysis of the Relationship with the Earthquake,O441.4
  7. On Active Queue Management Algorithms for Network Congestion Control,TP393.06
  8. Based on the digital watermark information hiding technology,TP309.7
  9. Research on Text Clustering Based on Latent Semantic Analysis and Self-organizing Maps,TP391.1
  10. Digital Image Watermark Technology Research Based on DCT Domain,TP309.7
  11. Research on Blind Detection Based on Image Content,TP391.41
  12. The Research of the Factor Analysis and Implementation in AFC Data Analysis System,TP319
  13. Digital watermarking technology and its applications in e-commerce security,TP309.7
  14. Chinese Text Clustering Based on Latent Semantic and Its Applications,TP391.1
  15. Digital Image Watermarking Algorithm Based on DWT and SVD,TP309.7
  16. Face Recognition Based on Optimized Bayesian Method,TP391.41
  17. ADS-B under the guidance of the visual approach to software design specifications and inquiries,TP311.13
  18. Research on Modeling and Flight Control of Quadrotor,V249.1
  19. Study of Image Edge Detection Method Based on Morphological Theory,TP391.41
  20. Research on the Solutions of Ill-Posed Problems in Sound Identification,TB52
  21. DSP-based printing digital watermark algorithm design,TP309.7

CLC: > Industrial Technology > Automation technology,computer technology > Automation technology and equipment > Automation systems > Automatic control,automatic control system
© 2012 www.DissertationTopic.Net  Mobile