ABSTRACT Electro-hydraulic system technology is employed in many modern control systems including aircrafts and missile flight control systems. These systems used to position the control surfaces of the flying vehicles with high controllability and accurate action. Pilot or autopilot commands are translated into electrical position commands to the electro-hydraulic control system (EHCS). This study is based upon the development of a detailed nonlinear mathematical model of the EHCS and a computer simulation program using MATLAB/SIMULINK package. The EHCS mainly consists of two systems; main and secondary with two separate active hydraulic power supply systems, used to supply the EHCS with the required power. The studied EHCS incorporates two electro-hydraulic servo-valves and a smart design of built-in direct operated directional control valves, controlled by electrical solenoids. The EHCS is designed with smart capability to over-ride the possible problems of failure in the hydraulic power supply systems or in the servo-valves. The transient response is obtained by the simulation program using the solver of ode23s (stiff/Mod. Rosenbrock) method. A comparison between the dynamic responses of the EHCS is presented in different modes of failure. The simulation results show that this EHCS is capable to provide a continued safe flight even when experiencing a certain component failure or a combination of failures.
Fadel, M., Rabie, M., & Youssef, A. (2018). INVESTIGATION OF THE OPERATION OF AN ELECTROHYDRAULIC CONTROL SYSTEM OF A FLYING VEHICLE UNDER FAILURE CONDITIONS. The International Conference on Applied Mechanics and Mechanical Engineering, 18(18th International Conference on Applied Mechanics and Mechanical Engineering.), 1-16. doi: 10.21608/amme.2018.34982
MLA
M. Z. Fadel; M. G. Rabie; A. M. Youssef. "INVESTIGATION OF THE OPERATION OF AN ELECTROHYDRAULIC CONTROL SYSTEM OF A FLYING VEHICLE UNDER FAILURE CONDITIONS". The International Conference on Applied Mechanics and Mechanical Engineering, 18, 18th International Conference on Applied Mechanics and Mechanical Engineering., 2018, 1-16. doi: 10.21608/amme.2018.34982
HARVARD
Fadel, M., Rabie, M., Youssef, A. (2018). 'INVESTIGATION OF THE OPERATION OF AN ELECTROHYDRAULIC CONTROL SYSTEM OF A FLYING VEHICLE UNDER FAILURE CONDITIONS', The International Conference on Applied Mechanics and Mechanical Engineering, 18(18th International Conference on Applied Mechanics and Mechanical Engineering.), pp. 1-16. doi: 10.21608/amme.2018.34982
VANCOUVER
Fadel, M., Rabie, M., Youssef, A. INVESTIGATION OF THE OPERATION OF AN ELECTROHYDRAULIC CONTROL SYSTEM OF A FLYING VEHICLE UNDER FAILURE CONDITIONS. The International Conference on Applied Mechanics and Mechanical Engineering, 2018; 18(18th International Conference on Applied Mechanics and Mechanical Engineering.): 1-16. doi: 10.21608/amme.2018.34982
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