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- 摘要
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- 实验方案
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[IEEE 2018 IEEE 22nd International Conference on Intelligent Engineering Systems (INES) - Las Palmas de Gran Canaria, Spain (2018.6.21-2018.6.23)] 2018 IEEE 22nd International Conference on Intelligent Engineering Systems (INES) - High Resolution 3D Thermal Imaging Using FLIR DUO R Sensor
摘要： With the spread of photogrammetry processes, photo-based 2D/3D reconstruction became general, in research as well as in the industry. Source images are taken using either a hand-held camera or an automated camera fixed to the carrier, a UAV, then they are matched during post-processing. The price of digital microbolometer-based high-resolution (1 megapixel) thermal cameras is currently very high, but these, compared to RGB cameras (16-20 megapixel), are still considered to have very low-resolution, in this way employing photogrammetry in this present case is not feasible. In the article, a novel method developed by us is introduced which by using a low thermal resolution camera (FLIR DUO R), based on which a 3D thermal image can be produced with the help of a camera capable of dual imaging (RGB and Thermal). The work is illustrated using measurements, and post-production was conducted using the MATLAB software. The process is adequate for producing 3D thermal images taken using UAV devices.
关键词： FLIR,photogrammetry,large scale point cloud,MATLAB,object reconstruction,3D thermal imaging
更新于2025-09-10 09:29:36
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Optimal Operation of PV-DG-battery based Microgrid with Power Quality Conditioner
摘要： This paper presents an optimal control operation of a photovoltaic (PV)-battery based standalone microgrid, feeding nonlinear loads. To ensure continuous power supply to the critical loads during low insolation or low battery state of charge (SOC), a diesel generator (DG) is used as an auxiliary generator. This cost effective hybrid system with maximum utilization of the renewable as well as fossil fuel based generators, can be employed in hospitals, telecom stations in remote areas. In order to nullify the effect of nonlinear loads on the DG, modified enhanced phase locked loop (EPLL) based power quality conditioner is used. The characteristic equation of conventional EPLL is amplitude dependent, thus, the controller tuning parameters need to be modified if input signal varies over a large range. The presented controller overcomes this problem making the system more robust in eliminating noise & harmonics, and extracting fundamental component of given signal. This component is drawn from the DG with the help of voltage source converter, thus, making its current always distortion free. The proposed control scheme is simulated in MATLAB. Furthermore, experimental verification is done on a laboratory prototype of the same. The steady state and dynamic responses of the system validate its satisfactory performance.
关键词： EPLL,laboratory prototype,microgrid,power quality conditioner,battery,photovoltaic,nonlinear loads,MATLAB,diesel generator
更新于2025-09-10 09:29:36
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The Design of Nonlinear Chirp Based on the DSP Builder Technique
摘要： This paper, by analyzing the function Chirp, studies the software design and realization of the function. It offers a design plan based on the nonlinear Chirp signal of DSP Builder technique and designs the signal generator of the nonlinear Chirp based on the design flow of Matlab/Simulink/DSP Builder/QuartusⅡ. It also conducts simulation verification using the development software Matlab/Simulink and QuartusII, proving that the design can well realize the signal source Chirp. The experiment proves that the DSP Builder technique can modify the starting frequency, bandwidth and the frequency resolution of linear frequency modulation signals by changing the programming parameters. The method is proved to be simple in designing, convenient in modification, low in cost and it doesn’t involve any programming; therefore, it is easy to realize.
关键词： FPGA,Matlab/Simulink,Nonlinear Chirp,DSP Builder,QuartusⅡ
更新于2025-09-10 09:29:36
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Band Gap Optimization Design of Photonic Crystals Material
摘要： The photonic crystal has a fundamental characteristic - photonic band gap, which can prevent light to spread in the crystals. This paper studies the width variation of band gaps of two-dimension square lattice photonic crystals by changing the geometrical shape of the unit cells' inner medium column. Using the finite element method, we conduct numerical experiments on MATLAB 2012a and COMSOL 3.5. By shortening the radius in vertical axis and rotating the medium column, we design a new unit cell, with a 0.3*3.85e-7 vertical radius and a 15 degree deviation to the horizontal axis. The new cell has a gap 1.51 percent wider than the circle medium structure in TE gap and creates a 0.0124 wide TM gap. Besides, the experiment shows the first TM gap is partially overlapped by the second TE gap in gap pictures. This is helpful to format the absolute photonic band gaps and provides favorable theoretical basis for designing photonic communication material.
关键词： band gap,photonic crystals,finite element method,MATLAB,COMSOL
更新于2025-09-10 09:29:36
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DUAL-CHIRP ARBITRARY MICROWAVE WAVEFORM GENERATION BY USING A DUAL PARALLEL MACH-ZEHNDER MODULATOR FEEDING WITH RF CHIRP SIGNAL
摘要： In this paper, dual-chirped arbitrary microwave waveform has been generated through photonics, incorporated with single dual parallel mach-zehnder modulator (DPMZM) inbuilt mach zehnder interferometer (MZI) structure. We have taken two cases of chirping, i.e., linear and nonlinear chirps. A case of linear chirping has been explored previously. However, to the best of the authors’ knowledge e?ect of nonlinear chirping in this paper is evaluated for the ?rst time. Other photonics approaches are also available, such as spectra shaping and wavelength to time mapping. But due to ?xed spectral response of spectral shaper, center frequency of linear chirp generated waveform is ?xed. To get large center frequency again we have to use large number of spectral shapers which will increase the system complexity. DPMZM avoids such di?culties. These MZMs are biased at the minimum transmission point to get carrier suppressed modulation. Product modulator (PM) is cascaded to the lower arm of DPMZM. Here by using DPMZM we get two advantages. First we have two complimentarily chirped microwave waveforms and second up conversion of the frequency of microwave carrier. A dual-chirped microwave waveform with centre frequency 6 GHz with bandwidth 200 MHz and 2 GHz is generated. The paper gives speci?c details about various performance parameters such as input signal frequency and power, output signal parameters viz output frequency, chirp rate, chirp bandwidth, time bandwidth product (TBW), etc. The overall model and its performance parameters are computed through MATLAB simulation.
关键词： DPMZM,dual-chirped microwave waveform,linear chirping,photonics,nonlinear chirping,MATLAB simulation
更新于2025-09-09 09:28:46
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[Lecture Notes in Networks and Systems] Renewable Energy for Smart and Sustainable Cities Volume 62 (Artificial Intelligence in Renewable Energetic Systems) || The MPPT Command for a PV System Comparative Study: Fuzzy Control Based on Logic with the Command “P&O”
摘要： The photovoltaic system is able to provide a maximum power to the load to a point of particular operation which is usually called as the maximum point of power (MPP); thus, it is important to use a maximum power point trackers (MPPT) to achieve the photovoltaic maximum power nevertheless the unsteady environmental conditions. The (P&O) algorithm has used to be a classical solution for the purpose of tracking the maximum power, however, there are several drawbacks in this technique such as it causes an oscillation nearby the maximum power point. To overcome the existing problems in the classical method a lot of researches have been done. This article provides an intelligent method to improve and optimize the performance of the maximum power point tracker associated with the PV array with the help of fuzzy logic technology, as well as compare its behavior by report has other techniques (P&O) used in the photovoltaic systems controls. The simulation results are developed under MATLAB/Simulink software. An extensive simulation have been done and compared with the traditional (P&O) technique under various climatic conditions to provide the effectiveness of the proposed controller.
关键词： Fuzzy logic controller (FLC),The PV system,Maximum power point tracking MPPT,Matlab/Simulink,The perturbation and observation (P&O)
更新于2025-09-04 15:30:14
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[IEEE 2018 International CET Conference on Control, Communication, and Computing (IC4) - Thiruvananthapuram (2018.7.5-2018.7.7)] 2018 International CET Conference on Control, Communication, and Computing (IC4) - Comparative Study of Adaptive Single Sensor Based MPPT for PV Applications with Conventional Algorithms
摘要： Photovoltaic (PV) Systems are becoming vital for the existence of mankind nowadays. From bulk power generation to space exploration applications, PV systems finds an important role. To extract power from PV device it has to be operated at its Maximum Power Point(MPP) for which different MPPT algorithms are used. On a relative study of these different MPPT algorithms it is found that most of them suffers from certain problems such as highly oscillatory response and slow tracking time. Most of these algorithms uses both current and voltage sensors, this adds to the issue of reliability of such MPPTs. Here in this study, a Single voltage sensor based Adaptive MPPT is using different MPPT compared with MATLAB/SIMULINK simulations.
关键词： MATLAB/Simulink,Adaptive Voltage Sensor based MPPT,Maximum Power Point Tracking (MPPT),Solar power,Single Ended Primary Inductance Converter (SEPIC)
更新于2025-09-04 15:30:14
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[IEEE 2018 7th International Conference on Renewable Energy Research and Applications (ICRERA) - Paris, France (2018.10.14-2018.10.17)] 2018 7th International Conference on Renewable Energy Research and Applications (ICRERA) - Improved Matlab Simulink Two-diode Model of PV Module and Method of Fast Large-Scale PV System Simulation
摘要： Nowadays, to response to the demand of a high rate renewable energy penetration in the electricity grids, the installation of many new large-scale photovoltaic systems up to more than 100 MW is unavoidable. However, in many countries, there is a serious lack of space for these large-scale projects. As the authorities wish to avoid taking away many farmlands for ground-mound photovoltaic systems, we must find acceptable ecological alternative solutions. One of the solution is the linear photovoltaic systems due to the availability and ready to use of the linear space: bike path, along the pavement of a road, along the edge of a highway… Another interesting method is the installation of floating PV power plants on inland water bodies. The possibilities and opportunities of these new kinds of large-scale PV plants are infinite. However, their installations meet a lot of challenges, such as the loss due to new structures and environments, the cost of equipment, the compatibility of the new PV plants with the initial function of the surface… To study these challenges, an effective simulation tool is essential. Considering the importance of the simulation tools, this paper proposes an improved PV system simulation model based on the two-diode model and a fast, comprehensive method to simulate the PV system in long term with a huge volume of the MATLAB/SIMULINK in environment.
关键词： PV module database,Large-scale photovoltaic system,Module modelisation,Photovoltaic (PV),Matlab/Simulink
更新于2025-09-04 15:30:14
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Effect of elastomer characteristics on fiber optic force sensing performance in biomedical robotics applications
摘要： Miniaturized and “smart” sensors are required for research in biology, physiology, and biomechanics, and they have extremely important clinical applications for diagnostics and minimally invasive surgery. Fiber optic sensors have been proven to provide advantages compared to conventional sensors and high potential for biomechanical and biomedical applications. They are small, easy to operate, minimally invasive with low risk, more accurate, and inexpensive. This paper reports the design and modeling of a fiber optic force sensor that is capable of measuring compliance for a contact force of up to 1 N. The main objective of this study is to design and model a fiber optic sensor capable of measuring the total force applied on an object. A polydimethylsiloxane (PDMS) elastomer film with a thickness of 1.2 mm is placed between an optical fiber tip and an object, and it is used for measuring the force applied on a rigid element. The compliance of the fiber optic force sensor is measured by recording the response of PDMS elastomer films under different load conditions. We use finite element modeling results as a basis for comparing experimental data. The agreement between theoretical predictions and experimental data is reasonable and within an acceptable range.
关键词： Force sensor,FEM analysis,Optical fiber,Elastomer,MATLAB analysis,LabVIEW,ANSYS simulation,Biomedical robotics
更新于2025-09-04 15:30:14