Design and evaluation of a helicopter main rotor electrohydraulic control system

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Date

2022-8-26

Author

Düzağaç, Hasan Ali

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Helicopters are widely used aircrafts for several purposes. Main Rotor of a Helicopter creates necessary flight forces for performing flight operation. Orientation of a Helicopter Rotor System is determined and controlled manually by pilot and automatically by automatic control system via hydraulically operated flight control actuators. In this research, a novel electrohydraulically operated helicopter main rotor control system is mathematically designed and developed to improve overall performance of control system and to extend controllable frequency range. Besides, resonant frequency is modified to a rarely used frequencies and amplitude of resonant frequency response is reduced. Mathematical model of Flight Control Actuator is verified and mathematical model is validated using test results obtained in a test bench that reflects main rotor control system of helicopter. Theoretical and experimental test results are compared. A novel control actuator and feedback actuator are introduced and implemented within the system for application of proposed control strategies.

Subject Keywords

Hydraulic, Control Theory, System Dynamics, Helicopter, Fluid Power Control

URI

https://hdl.handle.net/11511/99418

Collections

Graduate School of Natural and Applied Sciences, Thesis

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Citation Formats

H. A. Düzağaç, “Design and evaluation of a helicopter main rotor electrohydraulic control system,” M.S. - Master of Science, Middle East Technical University, 2022.