Modelling and Analysis of Vibrations in a UAV Helicopter with a Vision System

Plasencia, Graciliano Nicolás Marichal; Rodríguez, María Tomás; Castillo-Rivera, Salvador; Hernández, Alberto Miguel Brito

doi:10.5772/52761

Cited by 18 publications

(8 citation statements)

References 17 publications

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“…Several important sources of vibration on helicopter are identified by Cai et al [6] and Ceruti et al [8]. Elsewhere, a comprehensive vibration analysis of the UAV helicopter is pursued by Plasencia et al [28]. In the MAV environment, the structural components may vibrate due to mechanical and aerodynamic effects.…”

Section: Finite Element Analysis Of Platform Structurementioning

confidence: 99%

Systematic Design and Implementation of a Micro Unmanned Quadrotor System

Phang

et al. 2014

Un. Sys.

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This paper presents a guideline to systematically design and construct a micro quadrotor unmanned aerial vehicle (UAV), capable of autonomous flight. The designed micro UAV has a gross weight of less than 40 g including power supply sufficient for an 8-min flight. The design is divided into three parts. First, investigation is made on the structural design of a conventional quadrotor. The quadrotor frame is then carefully designed to avoid any potential structural natural frequencies within the range of rotors operating speeds, based on simulation results obtained from MSC Nastran. Second, avionic system of the aircraft will be discussed in detail, mainly focusing on the design of printed circuit boards which include sensors, microprocessors and four electronic speed controllers, specially catered for micro quadrotor design. Last, a mathematical model for the micro quadrotor is derived based on Newton-Euler formalism, followed by methods of identifying the parameters. The flight test results are later described, analyzed and illustrated in this paper.

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Section: Finite Element Analysis Of Platform Structurementioning

confidence: 99%

Systematic Design and Implementation of a Micro Unmanned Quadrotor System

Phang

et al. 2014

Un. Sys.

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“…As the basis and predecessor of compound UAVs, the manned compound helicopter has shown great advantages in VTOL and flight stability at high speed with heavy loading, since it was first proposed by American researchers in 1960s [14,15]. The researchers oversea prefer to study the flight aerodynamics mainly aimed at rotors without ducts, vibration solving issues and control problems rather than the analysis of the configuration optimization [16][17][18]. In China, the researchers in Nanjing University of Aeronautics and Astronautics mainly focus on the studies of compound helicopters assembled with single lifting airscrew, fixed side wings and single vector tail ducted thruster including aerodynamics, interference coupling characteristics and hovering ability [19][20][21].…”

Section: Introductionmentioning

confidence: 99%

“…plot of (h) (y-axis) versus f P h (x-axis), based on f P b = 100 and different(8) HFPSO iteration procedure.The new position and velocity are updated by Eqs (17). and(22).…”

mentioning

confidence: 99%

Aerodynamic characteristic analysis and layout optimization design for compound UAVs by using hybrid Fuzzy–PSO algorithm

Chen

Qin

Shang

et al. 2019

J Braz. Soc. Mech. Sci. Eng.

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In order to further improve the performance of compound UAVs at high and low speed with heavy loading, a type of compound coaxial UAV with fixed wings and tail ducted-rotor thrusters was proposed to meet technology requirement. The lift and thrust aerodynamic characteristics were analyzed to get some relative characteristic and the aerodynamic coupling relationships between the fixed wings and tail propulsion system. And an optimization method based on hybrid Fuzzy-PSO (HFPSO) algorithm was proposed to obtain the optimal configuration plan that can reach the best aerodynamic performance without considering the coaxial architecture. The optimal configuration plan was finally obtained by applying the HFPSO method which also proves the method is effective and reasonable through comparison.

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“…10 Plasencia et al modeled a UAV system, generated a range of vibrations originating in the main rotor and designed a control methodology based on an adaptive neuro-fuzzy inference system to damp the unwanted vibrations. 11 From the aforementioned contributions, it can be seen that the random vibrations occur during the flight or landing of the UAV for several reasons-aerodynamic excitation, system malfunctions and external factors such as atmospheric turbulence.…”

Section: Introductionmentioning

confidence: 99%

“…modeled a UAV system, generated a range of vibrations originating in the main rotor and designed a control methodology based on an adaptive neuro-fuzzy inference system to damp the unwanted vibrations. 11…”

Section: Introductionmentioning

confidence: 99%

Random vibrations in unmanned aerial vehicles, mathematical analysis and control methodology based on expectation and probability

Аl-Мashhadani

2018

Journal of Low Frequency Noise, Vibration and Active Control

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The analysis of the random vibrations that occur during the flight of the unmanned aerial vehicles is important, as these random vibrations have random characteristic properties and have the ability to decrease the endurance of such systems. The accuracy of data collected from sensors in the unmanned aerial vehicle system is important for the flight control system. The transferring of these data among different sensors such as inertial measurement unit, axis accelerometers, GPS or cameras is usually affected by many factors. One of the important factors is the random vibration, which is usually caused by aerodynamic excitation or air turbulence. The problem of random vibrations has been studied for a long time and explained in many text books. In this study, the author introduces a mathematical analysis for random vibrations that are independent of their sources by considering these vibrations as a random and non-stationary process and designs a control methodology based on expectations and probability theory to reduce the effect of these vibrations. The analysis used in this research is based on the assumptions of practical approximation techniques.

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Modelling and Analysis of Vibrations in a UAV Helicopter with a Vision System

Cited by 18 publications

References 17 publications

Systematic Design and Implementation of a Micro Unmanned Quadrotor System

Systematic Design and Implementation of a Micro Unmanned Quadrotor System

Aerodynamic characteristic analysis and layout optimization design for compound UAVs by using hybrid Fuzzy–PSO algorithm

Random vibrations in unmanned aerial vehicles, mathematical analysis and control methodology based on expectation and probability

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