The work presented in this study aims to develop an intelligent algorithm, based on fuzzy logic, to track the maximum power point (MPP) of a photovoltaic (PV) panel. Modelling and simulation steps of the PV panel are ...
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The work presented in this study aims to develop an intelligent algorithm, based on fuzzy logic, to track the maximum power point (MPP) of a photovoltaic (PV) panel. Modelling and simulation steps of the PV panel are made by using the MATLAB/Simulink environment, before passing to the description of fuzzy logic MPP tracking (MPPT) algorithm. On an arduino Mega 2560 controller board, a real-time implementation of the MPPT algorithm by using Simulink Support Package for arduino Hardware in MATLAB/Simulink was conducted to experimentally validate the preliminary results of simulations. The proposed work outlines also the solution to modify pulse-width modulation frequency of arduino when it is used with Simulink.
In the present article, it is presented the obtained results in the design and implementation of an electronic system for the detection of volcanic ashes, directed towards the farming's protection as a resource to...
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ISBN:
(纸本)9781467387569
In the present article, it is presented the obtained results in the design and implementation of an electronic system for the detection of volcanic ashes, directed towards the farming's protection as a resource to mitigate the effects the fall of volcanic ashes cause. This system was developed from a pH probe to determine the levels of hydrogen potential of the volcanic ashes in a reference way (buffer). This probe is designed to work directly with an arduino card which allows the hardware programming in accordance with the pH values previously determined, activating protection methods for farming with sprinklers to clean the sheets and invigorate the food conduction inside the plant and thus, it could be able to realize the photosynthesis process.
In this research a quadcopter, which is also known as including four rotors, had been assembled to equipped with video camera derived by a step motor and controlled by arduino card programmed by LabVIEW to control bot...
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ISBN:
(纸本)9781538678589
In this research a quadcopter, which is also known as including four rotors, had been assembled to equipped with video camera derived by a step motor and controlled by arduino card programmed by LabVIEW to control both the video camera and the quadcopter movements through mobile application programmed for that. The available quad copter with video camera is extremally expensive especially if it was controlled by mobile, the idea is to imitate it by low cost equipment's leads to a mobile controlled quadcopter with controlled video camera less expensive by about ten time the commercial one available. Many challenges were solved including fixing the stability and controllability of both video camera and quadcopter and the excessive lode due to the video camera, arduino card and the step motor weight, also fixed the shifting in aerodynamic and gravity center arrived by that load. A mathematical model was built by solid work and had been tested by Ansys to ensure that. The equipped quadcopter was worked properly and both images and films taken by it was acceptable with respect to those taken by commercial one.
In this work, the dynamical behavior and real time control of a target trajectory of a modified Van der Pol model so the potential is proportional to the term sin(n) (x) is proposed. A generalization in the case of sm...
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In this work, the dynamical behavior and real time control of a target trajectory of a modified Van der Pol model so the potential is proportional to the term sin(n) (x) is proposed. A generalization in the case of small oscillations on the sinn (x) function is studied. Due to sinn (x) function, the system presents periodical regions of stability and unstability, a very rich dynamical behavior. Analytical investigations based on the harmonic balance method came out some specific values of the excitation frequency for which the model is subjected to a phenomenon of frequency entrainment. Also, under effect of the sine function power, chaos appears for even small value of the nonlinearity coefficient, in contrast to the classical Van der Pol oscillator. An investigation as an artificial pacemaker is done based on the real frequency of the natural pacemaker. We found that the modified Van der Pol model, like the classic Van der Pol model, can play the role of an artificial pacemaker with some approximations. Due to the complexity of the analogical sine function, an experimental study was made by real implementation of an arduino card based on the Runge-Kutta 4th order algorithm. The results obtained show a good correlation with the numerical results.
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