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Energy and AI 2024年第2期16卷 528-537页

作者： Patrick Rizk Frederic Rizk Sasan Sattarpanah Karganroudi Adrian Ilinca rafic.younes Jihan Khoder Department of Mechanical Engineering Universitédu QuébecàTrois-RivièresDrummondvilleQCCanada Centre national intégrédu manufacturier intelligent(CNIMI) Universitédu QuébecàTrois-RivièresDrummondvilleQCCanada Department of Mathematics Computer Science and EngineeringUniversitédu QuébecàRimouski300 allée des UrsulinesRimouskiQCG5L3A1Canada The Center for Advanced Computer Studies University of Louisiana at LafayetteLafayetteLAUSA T3E Industrial Research Group Mechanical Engineering DepartmentÉcole de Technologie Supérieure1100 Notre-Dame St WMontréalQC H3C 1K3Canada Faculty of Engineering Third BranchLebanese UniversityHadathBeirutLebanon LISV Laboratory University of Versailles Saint-Quentin-en-Yvelines10-12 Avenue de l'Europe78140VélizyFrance

In the context of global efforts to mitigate climate change by pursuing sustainable energy sources, wind energy has emerged as a critical contributor. However, the wind energy industry faces substantial challenges in maintaining and preserving the integrity of wind turbine blades. Timely and accurate detection and classification of blade faults, encompassing issues such as cracks, erosion, and ice buildup, are imperative to uphold wind turbines' ongoing efficiency and safety. This study introduces an inventive approach that amalgamates hyperspectral imaging and 3D Convolutional Neural Networks (CNNs) to augment the precision and efficiency of wind turbine blade fault detection and classification. Hyperspectral imaging is harnessed to capture comprehensive spectral information from blade surfaces, facilitating exact fault identification. The process is streamlined through Incremental Principal Component Analysis (IPCA), reducing data dimensions while maintaining integrity. The 3D CNN model demonstrates remarkable performance, achieving high accuracy in detecting all fault categories in full-band hyperspectral images. The model retains high accuracy even with dimensionality reduction to 20 spectral bands. The reduced processing time of the 20-band image enhances the practicality of real-world applications, thereby reducing downtime and maintenance expenditures. This research represents a significant advancement in wind turbine blade inspection, contributing to the sustainability and dependability of wind energy systems and furthering the cause of a cleaner and more sustainable energy future as part of the broader fight against climate change.

关键词： blade thereby turbine

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A review of control strategies used for morphing aircraft applications

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Chinese Journal of Aeronautics 2024年第4期37卷 436-463页

作者： Muhammed S.PARANCHEERIVILAKKATHIL Jafar S.PILAKKADAN rafic M.AJAJ Mohammadreza AMOOZGAR Davood ASADI Yahya ZWEIRI Michael I.FRISWELL Department of Aerospace Engineering Khalifa University of Science and TechnologyAbu DhabiUnited Arab Emirates Department of Aerospace Engineering Advanced Research and Innovation Center(ARIC)Khalifa University of Science and TechnologyAbu DhabiUnited Arab Emirates Department of Mechanical Materials&Manufacturing EngineeringUniversity of NottinghamNottingham NG72RDUK Department of Aerospace Engineering Adana Alparslan Turkes Science and Technology UniversityTurkey College of Engineering Swansea UniversitySwansea SA18ENUK

This paper reviews the various control algorithms and strategies used for fixed-wing morphing aircraft applications. It is evident from the literature that the development of control algorithms for morphing aircraft technologies focused on three main areas. The first area is related to precise control of the shape of morphing concepts for various flight conditions. The second area is mainly related to the flight dynamics, stability, and control aspects of morphing aircraft. The third area deals mainly with aeroelastic control using morphing concepts either for load alleviation purposes and/or to control the instability boundaries. The design of controllers for morphing aircraft/wings is very challenging due to the large changes that can occur in the structural, aerodynamic, and inertial characteristics. In addition, the type of actuation system and actuation rate/speed can have a significant effect on the design of such controllers. The aerospace community is in strong need of such a critical review especially as morphing aircraft technologies move from fundamental research at a low Technology Readiness Level(TRL) to real-life applications. This critical review aims to identify research gaps and propose future directions. In this paper, research activities/papers are categorized according to the control strategy used. This ranges from simple Proportional Integral Derivative(PID) controllers at one end to complex robust adaptive controllers and deep learning algorithms at the other end. This includes analytical, computational, and experimental studies. In addition, the various dynamic models used and their fidelities are highlighted and discussed.

关键词： Control strategies Morphing aircraft Shape morphing Flight dynamics Aeroelasticity

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Complete Modeling for Systems of a Marine Diesel Engine

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Journal of Marine Science and Application 2015年第1期14卷 93-104页

作者： Hassan Moussa Nahim rafic.younes Chadi Nohra Mustapha Ouladsine Faculty of Engineering Lebanese University Beirut Lebanon LSIS Aix Marseille University Marseille 13397 France Faculty of Engineering Beirut Arab University (BA U) Tripoli Lebanon

This paper presents a simulator model of a marine diesel engine based on physical, semi-physical, mathematical and thermodynamic equations, which allows fast predictive simulations The whole engine system is divided into several functional blocks： cooling, lubrication, air, injection, combustion and emissions. The sub-models and dynamic characteristics of individual blocks are established according to engine working principles equations and experimental data collected from a marine diesel engine test bench for SIMB Company under the reference 6M26SRP1. The overall engine system dynamics is expressed as a set of simultaneous algebraic and differential equations using sub-blocks and S-Functions of Matlab/Simulink. The simulation of this model, implemented on Matlab/Simulink has been validated and can be used to obtain engine performance, pressure, temperature, efficiency, heat release, crank angle, fuel rate, emissions at different sub-blocks. The simulator will be used, in future work, to study the engine performance in faulty conditions, and can be used to assist marine engineers in fault diagnosis and estimation （FDI） as well as designers to predict the behavior of the cooling system, lubrication system, injection system, combustion, emissions, in order to optimize the dimensions of different components. This program is a platform for fault simulator, to investigate the impact on sub-blocks engine＇s output of changing values for faults parameters such as： faulty fuel injector, leaky cylinder, worn fuel pump, broken piston rings, a dirty turbocharger, dirty air filter, dirty air cooler, air leakage, water leakage, oil leakage and contamination, fouling of heat exchanger, pumps wear, failure of injectors （and many others）.

关键词： marine diesel engine engine system cooling system lubrication system air system injection system combustion system emissions system fault diagnosis and estimation (FDI)

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A Linear Approach with μ-Analysis Control Adaptation for a Complete-Model Diesel-Engine Diagnosis

A Linear Approach with μ-Analysis Control Adaptation for a ...

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2009中国控制与决策会议

作者： Chady Nohra Hassan Noura rafic.younes Laboratoire des Sciences de l’Information et des Systèmes(LSIS) Paul Cézanne UniversityAix Marseille Ⅲ13397 Marseille Cedex 20France Mechanical Engineering Department Lebanese UniversityRafic Hariri CampusLebanon

＜正＞This paper proposes an innovative fault-diagnosis system for a turbocharged diesel engine with variable-geometry turbocharger *** and diversified actuator faults are identified and analyzed such as air-leakage in the admission collector, compressor malfunctioning,intake-valves fault,intercooler fault,deterioration in the turbine-compressor coupling,defect in the variable geometry of the ***,a complete non-linear engine model with four state variables is *** proposed strategy consists in developing Fault Detection and Estimation algorithm（FDE） based on the theory ofμanalysis control,operated on a linearization LTI model of the diesel,permits a fault detection and estimation while attenuating the effect of uncertainties,disturbances and *** with LTI Diesel model in the presence of noise and uncertainties were carried out which demonstrated the effectiveness of the proposed ***,the robustness properties of the used H-infinity/μFDE filters exhibited significant rejection of disturbances and noise-effects attenuation as well as robustness against uncertainties which make the proposed strategy adequately close to the conditions of the real physical system.

关键词： Diagnosis Fault detection and estimation(FDE) Diesel engine H∞/μcontrol structured singular value.

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A compliant polymorphing wing for small UAVs

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Chinese Journal of Aeronautics 2020年第10期33卷 2575-2588页

作者： Sadique P.MUHAMMED rafic M.AJAJ Kamran AKHAN Department of Mechanical Engineering United Arab Emirates UniversityAl Ain 15551United Arab Emirates Department of Aerospace Engineering Khalifa University of Science and TechnologyAbu Dhabi 127788United Arab Emirates

This paper presents the development of a novel compliant polymorphing wing capable of chord and camber morphing for small *** morphing wing can achieve up to 10%chord extension and±20°camber *** design,modeling,sizing,manufacturing and mechanical testing of the wing are *** polymorphing wing consists of one continuous front spar fixed to the fuselage and a rear spar on each side of the *** rear spar can translate in the chordwise direction(chord morphing)and rotate around itself(camber morphing).A flexible elastomeric latex sheet is used as the skin to cover the wing and maintain its aerodynamic shape whilst allowing *** loads from the skin are transferred to the spars using the compliant cellular ribs that support the flexible skin and facilitate ***-tensioning is applied to the skin to minimize wrinkling when subject to aerodynamic and actuation loads.A rack and pinion actuation system,powered by stepper motors,is used for ***-structural design,analysis and sizing are *** comparison between the polymorphing wing and the baseline wing(non-morphing)shows that chord morphing improves aerodynamic efficiency at low angles of attack while camber morphing improves efficiency at high angles of attack.

关键词： Camber morphing Chord morphing Compliant structures Flexible skin UAVs

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香蕉葡萄糖浆的制备

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食品科技 2005年第1期30卷 19-20页

作者：朱乐敏 rafic Derjani 扬州职业大学 IMXP Comercio Internacional C.A. Caracas89000

研究用香蕉提取淀粉来制备葡萄糖浆。香蕉淀粉在抗高温α-淀粉酶的水解下可得麦芽糊精。香蕉麦芽糊精在淀粉葡萄糖苷酶和支链淀粉酶的作用下,经60℃,24h糖化后可制得葡萄糖浆。结果表明:香蕉葡萄糖浆和一般商用葡萄糖浆的化学和物理特... 详细信息

研究用香蕉提取淀粉来制备葡萄糖浆。香蕉淀粉在抗高温α-淀粉酶的水解下可得麦芽糊精。香蕉麦芽糊精在淀粉葡萄糖苷酶和支链淀粉酶的作用下,经60℃,24h糖化后可制得葡萄糖浆。结果表明:香蕉葡萄糖浆和一般商用葡萄糖浆的化学和物理特性基本相同,但前者的颜色更清晰,适宜于食品工业的应用。

关键词：香蕉淀粉葡萄糖苷酶葡萄糖浆

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从胡萝卜中提取淀粉的试验

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食品科技 2005年第4期30卷 36-38页

作者：朱乐敏 rafic Derjani 扬州职业大学 IMXP Comercio Internacional C.A Caracas 89000

尝试从秘鲁胡萝卜中提取淀粉,并将其理化性质与木薯淀粉进行了比较。结果显示,胡萝卜淀粉含量较高,与木薯淀粉的理化特性相似;其形态为球形和破鸡蛋壳颗粒状,其直径大小为4～26μm。

关键词：胡萝卜淀粉木薯淀粉特性

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从香蕉淀粉中制备麦芽糊精和果葡糖浆的研究

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河南工业大学学报（自然科学版） 2005年第6期26卷 53-56页

作者：朱乐敏谢骏 rafic Derjani 扬州职业大学 IMXP Comercio Internacional C A Caracas89000Venezuela

从香蕉中分离的淀粉,在抗高温α-淀粉酶的水解作用下,可制得葡萄糖值(DE)低于20的麦芽糊精.香蕉麦芽糊精同玉米麦芽糊精相比,颜色更白,色差(ΔE)更大,具有适宜用在食品工业的理化特性.香蕉淀粉水解完成后,在淀粉葡萄糖苷酶和普鲁兰酶的... 详细信息

从香蕉中分离的淀粉,在抗高温α-淀粉酶的水解作用下,可制得葡萄糖值(DE)低于20的麦芽糊精.香蕉麦芽糊精同玉米麦芽糊精相比,颜色更白,色差(ΔE)更大,具有适宜用在食品工业的理化特性.香蕉淀粉水解完成后,在淀粉葡萄糖苷酶和普鲁兰酶的作用下,经60℃,24 h糖化后可制得果葡糖浆.香蕉果葡糖浆的化学特性与玉米果葡糖浆相似,但色泽更清晰,色泽的稳定性也略高于玉米果葡糖浆.

关键词：香蕉淀粉淀粉酶麦芽糊精果葡糖浆

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乙酰化香蕉淀粉的特性

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粮油食品科技 2006年第4期14卷 31-33页

作者：朱乐敏 rafic Derjani 扬州职业大学 IMXP Comercio Internacional C.A. Caracas 89000

通过与玉米淀粉比较,乙酰化香蕉淀粉的灰分、蛋白质、脂肪含量均比乙酰化玉米淀粉高。乙酰化香蕉淀粉糊的透明率在低温下出现较小的退化趋势,但常温下淀粉糊的透明率较高且有较好的稳定性。在较高温度下,乙酰化香蕉淀粉的持水能力比原... 详细信息

通过与玉米淀粉比较,乙酰化香蕉淀粉的灰分、蛋白质、脂肪含量均比乙酰化玉米淀粉高。乙酰化香蕉淀粉糊的透明率在低温下出现较小的退化趋势,但常温下淀粉糊的透明率较高且有较好的稳定性。在较高温度下,乙酰化香蕉淀粉的持水能力比原淀粉高。乙酰化作用增加淀粉的溶解度和膨胀率。乙酰化作用也增加了香蕉淀粉糊的粘度值。

关键词：乙酰作用功能特性淀粉取代度香蕉淀粉

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