Investigation, Flight Testing, and Comparison of Three Nonlinear Control Techniques with Application to a Quadrotor Unmanned Aerial Vehicle

2012 ◽  
Author(s):  
Tong Li ◽  
Youmin Zhang ◽  
Brandon Gordon
Keyword(s):  
Nonlinear Control ◽  
Unmanned Aerial Vehicle ◽  
Flight Testing ◽  
Control Techniques ◽  
Aerial Vehicle

Modeling and flight testing of wing shaping for roll control of an unmanned aerial vehicle

2015 ◽  
Vol 3 (4) ◽  
pp. 192-204 ◽  
Author(s):  
Michael A. Thamann ◽  
Suzanne Weaver Smith ◽  
Sean C.C. Bailey ◽  
E. Brady Doepke ◽  
Scott W. Ashcraft
Keyword(s):  
Numerical Model ◽  
Unmanned Aerial Vehicle ◽  
Flight Testing ◽  
Flight Tests ◽  
Autonomous Flight ◽  
Roll Control ◽  
Modeling Process ◽  
Aerodynamic Properties ◽  
Aerial Vehicle

In this paper, an approach is described to implement autonomous (waypoint tracking) flight in a testbed airframe, which uses wing twist for roll control. These flights were performed using an existing commercial autopilot. Aileron effectiveness was identified as a parameter that could be modified to maintain roll control during autonomous flight. A modeling process was then developed to calculate the aileron effectiveness for a wing shaping demonstrator aircraft utilizing numerically determined aerodynamic properties. Simulations and flight tests with the testbed aircraft were performed that demonstrated suitability of the approach for autonomous flight. In-flight aileron doublets were used to validate the aileron effectiveness predicted by the numerical model, which matched within 7%.

scholarly journals Flight testing full conversion of a 40-kg-class tilt-duct unmanned aerial vehicle

2021 ◽  
pp. 106611
Author(s):  
Sungho Chang ◽  
Am Cho ◽  
Seongwook Choi ◽  
Youngshin Kang ◽  
Yushin Kim ◽  
...  
Keyword(s):  
Unmanned Aerial Vehicle ◽  
Flight Testing ◽  
Aerial Vehicle ◽  
Full Conversion

scholarly journals РОБАСТНОЕ УПРАВЛЕНИЕ БЕСПИЛОТНЫМ ЛЕТАТЕЛЬНЫМ АППАРАТОМ ПРИ НЕОПРЕДЕЛЕННЫХ СКОРОСТЯХ

2018 ◽  
pp. 4-12
Author(s):  
Будиба Уиссам
Keyword(s):  
Control System ◽  
Robust Control ◽  
Nonlinear Control ◽  
Unmanned Aerial Vehicle ◽  
Quality Criteria ◽  
Nominal Model ◽  
Ansys Cfx ◽  
Aerial Vehicle ◽  
Aerodynamic Parameters ◽  
Aerodynamic Lift

This paper presents the method for implementing robust control using a nominal model of an unmanned aerial vehicle (UAV). The operation of a classical controller in a nonlinear control system in the event of disturbing influences does not satisfy the specified quality criteria. This changes the aerodynamic parameters, and the system becomes unstable. To eliminate unwanted deviations in the control system of the aircraft introduced robust control. The introduction of such a correction control signal allows you to fend off all sorts of failures and disturbances that lead to uncontrolled control. Changes in the aerodynamic lift coefficients, coefficient of resistance, and moments affect the model of the object. The nominal model is calculated by calculating the coefficients with the ANSYS-CFX software and the calculation is confirmed experimentally. Errors are also modeled by this software, and the ranges of variation of each coefficient are a set of failures.

scholarly journals Control techniques of tilt rotor unmanned aerial vehicle systems: A review

2017 ◽  
Vol 30 (1) ◽  
pp. 135-148 ◽  
Author(s):  
Zhong Liu ◽  
Yuqing He ◽  
Liying Yang ◽  
Jianda Han
Keyword(s):  
Unmanned Aerial Vehicle ◽  
Control Techniques ◽  
Tilt Rotor ◽  
Vehicle Systems ◽  
Aerial Vehicle

SYNTHETIC ESTIMATION OF ANGLE OF ATTACK AND SIDESLIP FOR FLIGHT TESTING OF AN UNMANNED AERIAL VEHICLE

2019 ◽  
Author(s):  
Andrew Gomes Pereira Sarmento ◽  
Alain Souza ◽  
David Fernando Castillo Zuñiga ◽  
Luiz Carlos Sandoval Góes
Keyword(s):  
Unmanned Aerial Vehicle ◽  
Angle Of Attack ◽  
Flight Testing ◽  
Synthetic Estimation ◽  
Aerial Vehicle

Manufacturing Process and Flight Testing of an Unmanned Aerial Vehicle (UAV) with Composite Material

2016 ◽  
Vol 842 ◽  
pp. 311-318
Author(s):  
Gesang Nugroho ◽  
Ali Ashar Rafsan Jani ◽  
Ridho Ramadhan Trio Sadewo ◽  
Muhammad Satrio
Keyword(s):  
Composite Material ◽  
Unmanned Aerial Vehicle ◽  
Manufacturing Process ◽  
Flight Testing ◽  
Aircraft Flight ◽  
Good Surface ◽  
High Durability ◽  
Monitoring Process ◽  
Strong Material ◽  
Aerial Vehicle

The manufacturing process of lightweight and strong (Unmanned Aerial Vehicle) UAV and composite aircraft flight testing capability is described in this research. Nowadays, UAV development becomes more creative and high technology. Mapping and monitoring process from a UAV will be more effective and efficient. Mapping and monitoring process needs high durability UAV so that development with lightweight and strong material is needed. Lightweight technology is very suitable applied in the UAV technology. The composite material has many benefits for an aerodynamics world. The composite material was made of fiberglass and resin, and this material was used in components that are not loaded to high loads. The aircraft industry uses fiberglass composites widely because of the stiffness, strength, and toughness of composite.This research was conducted by manufacturing an aircraft with a fiberglass composite. The first manufacturing process was making a master prototype from styrofoam and then the styrofoam master was used to make a mold. The next process is called hand lay-up in which fiberglass and resin were laid to the model to produce half side of the aircraft. The process refined by vacuum bag to obtain a thin, flat, and good surface of the aircraft. Aircraft flight testing is needed to obtain statistical of the stability in pitch, roll and altitude, so the data result will determine the feasibility of composite aircraft in this research. The flight data have shown that the aircraft has high stability on roll and pitch.

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