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Algerian Journal of Signals and Systems最新文献

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Steel Surface Defect Detection Using Convolutional Neural Network 基于卷积神经网络的钢材表面缺陷检测
Algerian Journal of Signals and Systems Pub Date : 2020-12-15 DOI: 10.51485/AJSS.V5I4.122
Yousra Kateb, Hocine Meglouli, A. Khebli
{"title":"Steel Surface Defect Detection Using Convolutional Neural Network","authors":"Yousra Kateb, Hocine Meglouli, A. Khebli","doi":"10.51485/AJSS.V5I4.122","DOIUrl":"https://doi.org/10.51485/AJSS.V5I4.122","url":null,"abstract":"Steel is the most important engineering and construction material in the world. It is used in all aspects of our lives. But as every metal is can be defected and then will not be useful by the consumer Steel surface inspection has seen an important attention in relation with industrial quality of products. In addition, it has been studied in different methods based on image classification in the most of time, but these can detect only such kind of defects in very limited conditions such as illumination, obvious contours, contrast and noise...etc. In this paper, we aim to try a new method to detect steel defects this last depend on artificial intelligence and artificial neural networks. We will discuss the automatic detection of steel surface defects using the convolutional neural network, which can classify the images in their specific classes. The steel we are going to use will be well-classified weather the conditions of imaging are not the same, and this is the advantage of the convolutional neural network in our work. The accuracy and the robustness of the results are so satisfying.","PeriodicalId":153848,"journal":{"name":"Algerian Journal of Signals and Systems","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128508461","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Synthesis of activated carbon sand their application in the synthesis of monometallic and bimetallic supported catalysts 活性炭的合成及其在单金属和双金属负载催化剂合成中的应用
Algerian Journal of Signals and Systems Pub Date : 2020-12-15 DOI: 10.51485/AJSS.V5I4.116
Dalila Bousba, Chafia Sobhi, Amna Zouaoui, Souad Bouasla
{"title":"Synthesis of activated carbon sand their application in the synthesis of monometallic and bimetallic supported catalysts","authors":"Dalila Bousba, Chafia Sobhi, Amna Zouaoui, Souad Bouasla","doi":"10.51485/AJSS.V5I4.116","DOIUrl":"https://doi.org/10.51485/AJSS.V5I4.116","url":null,"abstract":"Biomass-derived porous carbons are attractive materials for the synthesis of carbon-supported catalysts, carbonaceous catalysts are environmentally benign and could provide an important competitive advantage as compared to existing heterogeneous catalysts, however the surface properties of carbon materials and excellent physical and chemical properties are compatible with diverse catalysis reactions including organic transformations. Currently, activated carbons are one of well known carbonaceous materials for their catalytic properties and for use as support in heterogeneous catalysis. The supported catalysts have been successfully used in the chemical industries for a long time, in which carbon supported catalysts have allowed to a new chemical catalytic process, on the other hand Heterogeneous catalysis plays a key role in the manufacture of essential products in different fields. In this paper, we present a comparative study, between two main different methods for activated carbons (ACs) preparation namely, physical and chemical activations. Latter was prepared from agro-industrial biomass and used as a support to prepare monometallic (dry impregnation and excess impregnation) and bimetallic catalyst (successive impregnation and co impregnation).","PeriodicalId":153848,"journal":{"name":"Algerian Journal of Signals and Systems","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126385292","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Design Optimization of PMU Anti-Aliasing Filters using Taguchi Method 基于田口法的PMU抗混叠滤波器设计优化
Algerian Journal of Signals and Systems Pub Date : 2020-12-15 DOI: 10.51485/AJSS.V5I4.119
F. Z. Dekhandji
{"title":"Design Optimization of PMU Anti-Aliasing Filters using Taguchi Method","authors":"F. Z. Dekhandji","doi":"10.51485/AJSS.V5I4.119","DOIUrl":"https://doi.org/10.51485/AJSS.V5I4.119","url":null,"abstract":"A Phasor Measurement Unit (PMU) is a monitoring device, which serves in checking the power system condition by measuring voltage and current phasors along with frequency at a particular node. The basic structure of PMU consists of Synchronization Unit, Measurement Unit and Data Transmission Unit. The Measurement Unit has three components: Anti-aliasing filters, Analog-to-Digital Converter and Phasor measurement Unit/ Processor. An anti-aliasing filter ensures that all the analog signals have the same phase shift and attenuation thus assuring that the phase angle differences and relative magnitudes of the different signals are unchanged. Anti-aliasing filters made up of an analog front end and a digital decimation filter are far more stable as far as aging and temperature variations are concerned. IEEE C37.118 standard stipulates that it is mandatory to use the filter for avoiding any aliasing errors. Out of various analog filters, the Butterworth has been preferred due to its flat response in pass-band as compared to other filters. In this work, it is attempted to design anti-aliasing filters to be used in PMUs. The design problem is formulated as an optimization task that is solved using the Taguchi method. The results show better performance in terms characteristics compared to the conventional filters. The designed filters may be employed as building blocks in modern PMUs.","PeriodicalId":153848,"journal":{"name":"Algerian Journal of Signals and Systems","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123540630","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
RLS-based Identification of fractional order H n1,n2 system using the Singularity Function approximation 基于rls的分数阶H n1,n2系统奇异函数逼近辨识
Algerian Journal of Signals and Systems Pub Date : 2020-12-15 DOI: 10.51485/AJSS.V5I4.117
Yamina Ali Larnene, S. Ladaci, Aissa Belemeguenai
{"title":"RLS-based Identification of fractional order H n1,n2 system using the Singularity Function approximation","authors":"Yamina Ali Larnene, S. Ladaci, Aissa Belemeguenai","doi":"10.51485/AJSS.V5I4.117","DOIUrl":"https://doi.org/10.51485/AJSS.V5I4.117","url":null,"abstract":"This paper presents a study of fractional order systems modeling and identification by recursive least squares (RLS) with forgetting factor estimation technique. The fractional order integrators are implemented using the Singularity Function approximation method. Parametric Identification of fractional order differential equations (FDE) is investigated when estimating system parameters by a linear model with respect to parameters, as well as non-integer orders from temporal data (H n1,n2 )-type model. A numerical simulation example illustrates the effectiveness of the proposed identification approach to ensure the convergence of the plant and model outputs even if a bias is persistent in parameters’ values.","PeriodicalId":153848,"journal":{"name":"Algerian Journal of Signals and Systems","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128962394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Straddle Robot Design and control with a PID controller optimized by PSO algorithms 基于粒子群算法优化的PID控制器的跨界机器人设计与控制
Algerian Journal of Signals and Systems Pub Date : 2020-06-15 DOI: 10.51485/AJSS.V5I2.109
Y. Zennir, Sami Grief, El-Arkam Mechhoud
{"title":"Straddle Robot Design and control with a PID controller optimized by PSO algorithms","authors":"Y. Zennir, Sami Grief, El-Arkam Mechhoud","doi":"10.51485/AJSS.V5I2.109","DOIUrl":"https://doi.org/10.51485/AJSS.V5I2.109","url":null,"abstract":"The work presented in this paper illustrates the design and control of a straddle robot-type four-wheel moving robot with PID controller adjusted by meta-genetic algorithms genetic Algorithm (GA) and PSO. The approach used for the simulation is a modeless approach because it assumes no knowledge of the mathematical model of the system, indeed, the mechanical structure was implemented under SolidWorks, then a simulation (Solidworks, Simulink) has was conducted using particle swarm optimization (PSO) techniques for controller parameter optimization (PID) to control the steering angle and angular velocity of each wheel. The results obtained clearly illustrate the effectiveness of the selected control architecture and the accuracy is better with the use of the PSO algorithm. In a future work, we compare the results with using other optimization algorithms like GA (Genetic Algorithm) and GWO (Grey Wolf Optimizer) algorithm.","PeriodicalId":153848,"journal":{"name":"Algerian Journal of Signals and Systems","volume":"136 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125237644","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Simulation and Analysis of a Petrochemical Process (Deethanizer Column- MLE field) using HYSYS Aspen Simulator 利用HYSYS Aspen模拟器对某石化过程(Deethanizer塔- MLE场)进行了仿真分析
Algerian Journal of Signals and Systems Pub Date : 2020-06-15 DOI: 10.51485/AJSS.V5I2.101
Amel Belhocine, R. Bendib, Y. Zennir
{"title":"Simulation and Analysis of a Petrochemical Process (Deethanizer Column- MLE field) using HYSYS Aspen Simulator","authors":"Amel Belhocine, R. Bendib, Y. Zennir","doi":"10.51485/AJSS.V5I2.101","DOIUrl":"https://doi.org/10.51485/AJSS.V5I2.101","url":null,"abstract":"Natural gas industry has a great strategic and economic importance; it becomes one of the most attractive business opportunities in the petroleum and petrochemical field. In order to produce high quality gas, many companies all over the world including Algeria create many plants for natural gas processing to clean raw natural gas, by using separation unites and other services to get a product that respect the commercial specifications. Natural gas fractions are separated by distillation column in our case is called deethanizer tower. In this work a dynamic simulation study of deethanizer column is developed and implemented in HYSYS simulator. Simulation results prove that the HYSYS is a powerful tool to simulate industrial processes such that the simulated results are close to the real ones.","PeriodicalId":153848,"journal":{"name":"Algerian Journal of Signals and Systems","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125936756","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Analog Filter Design: A Succinct Investigation 模拟滤波器设计:一个简单的研究
Algerian Journal of Signals and Systems Pub Date : 2018-12-15 DOI: 10.51485/ajss.v3i4.74
A. Recioui, Fatma Zohra Hamrioui, Kenza Benamrouche, Oussama Merabet
{"title":"Analog Filter Design: A Succinct Investigation","authors":"A. Recioui, Fatma Zohra Hamrioui, Kenza Benamrouche, Oussama Merabet","doi":"10.51485/ajss.v3i4.74","DOIUrl":"https://doi.org/10.51485/ajss.v3i4.74","url":null,"abstract":"In many systems, it is essential to extract or enhance the desired information and remove the unwanted components. This is the simplest aim of signal processing where the filter turns out to be the key element. The objective of this paper is to investigate the characteristics of analog passive and active filters. Particularly, the interest goes to the conventional Butterworth, Chebychev and Bessel filter. A comparative study of these filters is done. The different circuits are simulated using the MULTISIM software to visualize the magnitude and phase responses. The procedure of designing the different filters is presented so that it can be used in any application.","PeriodicalId":153848,"journal":{"name":"Algerian Journal of Signals and Systems","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130060558","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Mathematical Method for Parameters Calculation of electric Characteristic of Photovoltaic Module 光伏组件电特性参数计算的数学方法
Algerian Journal of Signals and Systems Pub Date : 2018-12-15 DOI: 10.51485/AJSS.V3I4.75
B. Benabdelkrim, A. Benatillah
{"title":"Mathematical Method for Parameters Calculation of electric Characteristic of Photovoltaic Module","authors":"B. Benabdelkrim, A. Benatillah","doi":"10.51485/AJSS.V3I4.75","DOIUrl":"https://doi.org/10.51485/AJSS.V3I4.75","url":null,"abstract":"The study of photovoltaic systems (PV) in an efficient manner requires a precise knowledge of the I-V characteristic curves of PV modules. An accurate current-voltage (I-V) model of PV modules is inherently implicit and non-linear and calls for iterative computations to obtain an analytical expression of current as a function of voltage. In this paper, numerical approaches are proposed to forecast the PV modules performance for engineering applications. The proposed approaches were implemented in a Matlab script and the results have been compared with the datasheet values provided by manufacturers in standard test conditions (STC). These approaches permit to extract the unknown parameters and also allow quantifying the effects of module temperature and irradiance on key cells parameters. In this work, a comparative study of the performance characteristics for different modules thin films and solid is analyzed by a single-diode equivalent circuit using four- and five-parameter models and two diode model.","PeriodicalId":153848,"journal":{"name":"Algerian Journal of Signals and Systems","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128618427","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Contribution to the Exploitation of Artificial Intelligence in the Domain of Maintenance Diagnosis 人工智能在维修诊断领域的应用
Algerian Journal of Signals and Systems Pub Date : 2018-12-15 DOI: 10.51485/ajss.v3i4.73
F. Inel
{"title":"Contribution to the Exploitation of Artificial Intelligence in the Domain of Maintenance Diagnosis","authors":"F. Inel","doi":"10.51485/ajss.v3i4.73","DOIUrl":"https://doi.org/10.51485/ajss.v3i4.73","url":null,"abstract":"Increasing the performance of production units becomes a complex task from the technical point of view, especially when it comes to ensuring the availability and continuity of production systems where maintenance plays a fundamental role; it consists of checking and ensuring permanent monitoring of the installations of these systems. This operation requires continuous and high-level training of the operators, in order to overcome this limit, we call upon the field of artificial intelligence and expert systems. The basic idea of this work is the study of the contribution of expert systems in maintenance. It is a matter of synthesizing, from a bibliographic study, a logic to allow integrating the expert systems of diagnosis of breakdowns and dysfunctions in the maintenance of the systems of production; this last expert systems gives the better performance concerning the settling time and it’s always taken","PeriodicalId":153848,"journal":{"name":"Algerian Journal of Signals and Systems","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133485204","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
TCR Antenna For Small Satellite Application 用于小卫星的TCR天线
Algerian Journal of Signals and Systems Pub Date : 2018-12-15 DOI: 10.51485/ajss.v3i4.71
Z. Kourdi, O. KARA ALI
{"title":"TCR Antenna For Small Satellite Application","authors":"Z. Kourdi, O. KARA ALI","doi":"10.51485/ajss.v3i4.71","DOIUrl":"https://doi.org/10.51485/ajss.v3i4.71","url":null,"abstract":"The results of this study are interesting about antenna technology generation used in small satellite. A new design optimized of the TCR (tracking, command and ranging) antenna has been presented. It has a good impedance matching to the 50 Ohm coaxial line which has been radically enhanced with different geometric features. For the Ku band frequency band, the VSWR of 1.15 is not exceeded. In its optimized version, it is compact and aesthetic and this property reduces antenna distortions. Design considerations for this antenna performance in terms of coverage gain, side lobe isolation, and cross-polar isolation are discussed. The paper also discusses the possibilities of extending the frequency coverage of the antenna system into the Ku-band system can increase the capabilities and operational flexibility of existing earth stations as well as adapts with new current and future technology trends are presented.","PeriodicalId":153848,"journal":{"name":"Algerian Journal of Signals and Systems","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123972916","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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