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Hardware Implementation of Fuzzy Logic for Turbojet Engine Fuel Control System

Yousefpour, Hossein | 2010

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  1. Type of Document: M.Sc. Thesis
  2. Language: English
  3. Document No: 40530 (58)
  4. University: Sharif University of Technology, International Campus, Kish Island
  5. Department: Science and Engineering
  6. Advisor(s): Montazeri, Morteza; Kazemzadeh Hannani, Siamak
  7. Abstract:
  8. Gas turbine engine control is a demanding task that requires the regulation of the thrust as well as the satisfaction of the limitations such as engine aerodynamic instability, over temperature and over speed. Fuzzy logic is an attractive technique for the control of poor understood unmodeled, or complex systems especially where the experience of human operators is available to provide qualitative rules. In such cases, it has been found that control decisions can be made on the basis of linguistic measures or fuzzy algorithms. The controller that is designed on the basis of this theory is called fuzzy logic controller. The main objective of this thesis is hardware implementation of fuzzy logic system for turbojet engine fuel control system. In this study, a fuzzy control system is firstly designed to control the fuel flow of a turbojet engine. This fuzzy control system is then simulated with the engine model in Matlab-Simulink. The results obtained from the simulation show the effectiveness of the designed controller for jet engine performance satisfaction. Subsequently, the hardware implementation of the fuzzy logic controller is performed on an AVR microcontroller, and an electronic control unit (ECU) is manufactured. The ECU is then tested using an available hardware in the loop (HIL) simulation where it was connected to the fuel control unit (FCU). Finally, the results are compared with the Matlab simulation in order to show that the fuzzy logic implementation is performed correctly.
  9. Keywords:
  10. Fuel Control ; Gas Turbine Engines ; Hardware Implementation ; AVR Microcontroller ; Fuzzy Logic Control

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