Investigation of the Operation of an Electrohydraulic Control System of a Flying Vehicle Under Failure Conditions

Fadel, M.; Rabie, M. G.; Youssef, Abou-Bakr M.

doi:10.21608/amme.2018.34982

Cited by 2 publications

(2 citation statements)

References 1 publication

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“…The dynamic behavior of the ISA system is described by a set of mathematical relations. Due to this complicated system, there are some assumptions are taken into consideration in the model [12]:…”

Section: Mathematical Modelingmentioning

confidence: 99%

Modeling, Simulation and Control of a Fly-by-wire Flight Control System Using Classical PID and Modified PI-D Controllers

Fadel¹,

Rabie²,

Youssef³

2019

JESA

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The Fly-By-Wire (FBW) system is a computer-based flight control system that replaces the mechanical link between the pilot's cockpit controls and the moving surfaces by much lighter electrical wires. This concept is applied in the electro-hydraulic servo systems. In the present work, a detailed non-linear mathematical model of an aircraft integrated servo actuator (ISA) is developed and a computer simulation program is built using MATLAB / SIMULINK package. The ISA mainly consists of two separate active hydraulic power systems, used to supply the ISA with the required power. The studied ISA incorporates two electro-hydraulic servo-valves, a twin-symmetrical-hydraulic actuating cylinder, and a smart design of built-in directional control valves with a feedback system. The output linear motion of the actuating cylinder of the ISA is presented and its transient response is analyzed. A classical PID and modified PI-D controllers are designed and tuned by Zeigler-Nichols method according to the Integral Square Error (ISE) criteria to minimize the difference between the obtained system output feedback and the desired set input by adjusting the system control parameters. The comparative study between the two types of controllers show that the modified PI-D controller has better response than basic one and slower in the presence of disturbance.

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Section: Mathematical Modelingmentioning

confidence: 99%

Modeling, Simulation and Control of a Fly-by-wire Flight Control System Using Classical PID and Modified PI-D Controllers

Fadel¹,

Rabie²,

Youssef³

2019

JESA

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“…Two controllers were used to approach the desired motion with respect to the experimental measurements (actual condition). [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Modelling, transient response and hydraulic behaviour of 2DOF stabilization platform

Eldin¹,

Elnady²,

Hassan³

et al. 2020

FME Transactions

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The main part of the hydraulic circuit of the hydraulic stabilization platform (HSP) is the electro-hydraulic servo valve (EHSV), which is very expensive due to its manufacturing requirements, so the proper selection for the geometrical configuration of electro hydraulic servo valve (EHSV) and maintaining the system stability are the main goal for establishing HSP. Also improving the performance of (HSP) to achieve the position tracking in two degrees of freedom (2DOF) based on modifying the different parameters of the hydraulic circuit (actuator size - hydraulic servo actuator geometric configuration - different load on the platform) to achieve the best performance. The system offers a proposal for an upper stabilized platform with moving lower base to be used with ships to achieve a stabilization condition for many purposes such as radar. MATLAB Simulink and Simscape-multibody has been used in modeling the system. Changing the different parameters in the program block library input data (orifice area and spool slot width) to achieve best configuration of the system to be stabilized is discussed. The results show that using 0.6 mm² servo valve orifice area and more raises the system pressure and has a bad effect on system stability, also using 4 mm servo valve slot width has more fluctuation in the system pressure in the transient time than using (3, 2 or 1)mm slot width until approaching stable condition but has a better effect on system stability in the running (operation) time.

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Investigation of the Operation of an Electrohydraulic Control System of a Flying Vehicle Under Failure Conditions

Cited by 2 publications

References 1 publication

Modeling, Simulation and Control of a Fly-by-wire Flight Control System Using Classical PID and Modified PI-D Controllers

Modeling, Simulation and Control of a Fly-by-wire Flight Control System Using Classical PID and Modified PI-D Controllers

Modelling, transient response and hydraulic behaviour of 2DOF stabilization platform

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