نتایج جستجو برای: quadrotor

تعداد نتایج: 1445  

Quadrotor control has been noted for its trouble as the consequence of the high maneuverability, system nonlinearity and strongly coupled multivariable. This paper deals with the simulation depend on proposed controller of a quadrotor that can overcome this trouble. The mathematical model of quadrotor is determined using a Newton-Euler formulation. Fractional Order Proportional Integral Derivat...

2013
Xiao-chen Dong Fei Yan

Quadrotor is a widely used aircraft now and be with the nonlinear, uncertain characteristics. Because of requirement on high attitude stability the attitude control system of quadrotor needs to be well designed. Firstly the movement pattern and working principle of the quadrotor are analyzed. Then the hardware schematic diagram of attitude control system is designed which includes several senso...

2011
Mark Cutler N. Kemal Ure Bernard Michini Jonathan P. How

This paper presents the design, analysis and experimental testing of a variablepitch quadrotor. A custom in-lab built quadrotor with on-board attitude stabilization is developed and tested. An analysis of the dynamic differences in thrust output between a fixed-pitch and variable-pitch propeller is given and validated with simulation and experimental results. It is shown that variable-pitch act...

2015
Attila Nemes A. Nemes

The aim of this article is to give an introduction to quadrotor systems with an overview of soft computing techniques used in quadrotor unmanned aerial vehicle (UAV) control, modelling, object following and collision avoidance. The quadrotor system basics, its structure and dynamic model definitions are recapitulated. Further on synopsis is given of previously proposed methods, results evaluate...

2016
r. babaie

This paper presents the design of an optimal nonlinear controller for trajectory tracking of a quadrotor helicopter based on the well-known sliding mode control method (SMC). To this end, the Lyapunov law analysis has been used regarding nonlinear equations of the quadrotor. The proposed control method is characterized by its robustness against disturbances and aerodynamic effects. One of the m...

2013
Hicham Khebbache Mohamed Tadjine

The main purpose of this paper is to integrate fuzzy logic control and sliding mode control techniques based on backstepping approach to develop a robust fuzzy backstepping sliding mode controller (RFBSMC) for an under-actuated quadrotor UAV system under external disturbances and parameter uncertainties. First, a robust backstepping sliding mode control for quadrotor is introduced briefly. More...

2013
Christopher Lehnert

This paper presents the design of μAV, a palm size open source micro quadrotor constructed on a single Printed Circuit Board. The aim of the micro quadrotor is to provide a lightweight (approximately 86g) and cheap robotic research platform that can be used for a range of robotic applications. One possible application could be a cheap test bed for robotic swarm research. The goal of this paper ...

2017
F. Yacef

In this paper we deals with the limitation of flight endurance for quadrotor unmanned aerial vehicles. Quadrotor UAVs are multi-rotors flying machines; thus, a large proportion of their energy is consumed by rotors in order to maintain the vehicle in the air. In this concept, we introduced an energetic model composed of quadrotor movement dynamic, motors dynamic and battery dynamic; then, the p...

2011
Mark Cutler Nazim-Kemal Ure Bernard Michini N. Kemal Ure Jonathan P. How

The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. This paper presents the design, analysis and experimental testing of a variable-pitch quadrotor. A custom in-lab built quadrotor with on-board attitude stabilization is developed and tested. An analysis of the dynamic differences in thrust output between a fixed-pitch and varia...

2015
Marinela Georgieva Popova

Visual Servoing for a Quadrotor UAV in Target Tracking Applications Marinela Georgieva Popova Master of Applied Science Graduate Department of Aerospace Engineering University of Toronto 2015 This research study investigates the design and implementation of position-based and image-based visual servoing techniques for controlling the motion of quadrotor unmanned aerial vehicles (UAVs). The prim...

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