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2015 16th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA)最新文献

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Image segmentation with improved watershed algorithm using radial bases function neural networks 基于径向基函数神经网络的改进分水岭图像分割算法
2015 16th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA) Pub Date : 2015-12-01 DOI: 10.1109/STA.2015.7505174
R. A. Husain, A. Zayed, W. Ahmed, H. S. Elhaji
{"title":"Image segmentation with improved watershed algorithm using radial bases function neural networks","authors":"R. A. Husain, A. Zayed, W. Ahmed, H. S. Elhaji","doi":"10.1109/STA.2015.7505174","DOIUrl":"https://doi.org/10.1109/STA.2015.7505174","url":null,"abstract":"This paper proposes an improved watershed segmentation algorithm that uses RBF Neural Networks for the segmentation of image target objects. Instead of using catchment basin minima in order to define object regions, the technique developed throughout this work deploys RBF neural networks to predict the end boundaries of the segmentation clusters which are formed from the watersheds created in the image histogram topography. The RBF initial parameters, such as centers, and widths, are automatically set upon the histogram peaks and minima respectively. Experimental results of this leaning algorithm make it viable for different applications of gray scale image classifications.","PeriodicalId":128530,"journal":{"name":"2015 16th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA)","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123070463","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: 15
Study on the FPGA implementation of high gain observer with sampled measurement for induction machine 感应电机高增益采样测量观测器的FPGA实现研究
2015 16th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA) Pub Date : 2015-12-01 DOI: 10.1109/STA.2015.7505187
M. Besbes, H. Chehimi, S. H. Said, F. M'sahli
{"title":"Study on the FPGA implementation of high gain observer with sampled measurement for induction machine","authors":"M. Besbes, H. Chehimi, S. H. Said, F. M'sahli","doi":"10.1109/STA.2015.7505187","DOIUrl":"https://doi.org/10.1109/STA.2015.7505187","url":null,"abstract":"This paper deals with the feasibility on FPGA implementation of a continuous-discrete time observer applied to an induction machine (IM). With only stator currents measurement which are weakly sampled, we can achieve not only a quit reconstruction of these last signals but also, an acceptable estimation of the mechanical speed, the rotor flux components and the load torque. By comparison with its continuous version, the proposed observer presents an improvement results which are proved by numerical simulation.","PeriodicalId":128530,"journal":{"name":"2015 16th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA)","volume":"15 8","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113936169","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
Real time implementation of DTC based on sliding mode speed controller of an induction motor 基于异步电动机滑模速度控制器的直接转矩控制的实时实现
2015 16th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA) Pub Date : 2015-12-01 DOI: 10.1109/STA.2015.7505139
Saber Krim, Soufien Gdaim, A. Mtibaa, M. Mimouni
{"title":"Real time implementation of DTC based on sliding mode speed controller of an induction motor","authors":"Saber Krim, Soufien Gdaim, A. Mtibaa, M. Mimouni","doi":"10.1109/STA.2015.7505139","DOIUrl":"https://doi.org/10.1109/STA.2015.7505139","url":null,"abstract":"This research work deals with the real time implementation on an Field Programmable Gate Array (FPGA) of the Direct Torque Control (DTC) of an Induction Motor (IM) utilizing a Sliding Mode controller (SMC) of the rotor speed. In several industrial applications, the speed is controlled by a Proportional Integral (PI) regulator, because of its simplicity. However, because of the model uncertainties of the motor, the stator resistance variation, and the variation of the load torque as an external disturbance, the PI controller becomes unable to guarantee the desired control performances. To overcome the PI insufficiency the SMC is proposed. SMC is featured by its capability to cope with the disturbances. Therefore, developing the SMC of speed presents the first contribution in this manuscript. The second contribution consists to implement the proposed approach referred as DTC-SMC using an FPGA due to its ability to execute this algorithm with high processing speed by adopting a parallel processing. The FPGA is proposed to overcome the DSPs and microcontrollers limitations, like the calculation delay due to its sequential processing. The DTC-SMC algorithm has been validated by simulation utilizing the Xilinx System Generator (XSG). The obtained results of simulation verify the proposed controller relative to the PI controller under load torque disturbances.","PeriodicalId":128530,"journal":{"name":"2015 16th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA)","volume":"19 8","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120814587","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: 11
Extended high gain observer design 扩展的高增益观测器设计
2015 16th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA) Pub Date : 2015-12-01 DOI: 10.1109/STA.2015.7505179
M. Farza, T. Ménard, M. M'Saad
{"title":"Extended high gain observer design","authors":"M. Farza, T. Ménard, M. M'Saad","doi":"10.1109/STA.2015.7505179","DOIUrl":"https://doi.org/10.1109/STA.2015.7505179","url":null,"abstract":"In this paper, an Extended High Gain Observer (EHGO) design for some classes of nonlinear systems with global Lipschitz nonlinearities, is proposed. The design is first proposed for a class of systems where the nonlinearities are triangular with respect to the state. Then, it is extended to another class of systems involving some unknown parameters that need to be estimated together with the state. Finally, the design is extended to a class of systems where the nonlinearities does not assume the usual triangular structure. Indeed, a more general triangular structure of the system is defined with respect to the state components which are reordered according to appropriate defined characteristic indices. The gain of the proposed EHGO is provided by a Lyapunov Ordinary Differential Equation (ODE). The observer convergence is guaranteed under an appropriate set of conditions given in terms of appropriate excitation. Simulation results are given for illustration purposes.","PeriodicalId":128530,"journal":{"name":"2015 16th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA)","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121636410","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
Implementation of a fast and simple space vector modulation scheme for a three-phase five-level neutral point clamped inverter 实现一个快速和简单的空间矢量调制方案的三相五电平中性点箝位逆变器
2015 16th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA) Pub Date : 2015-12-01 DOI: 10.1109/STA.2015.7505197
Zouhaira Ben Mahmoud, M. Hamouda, A. Khedher
{"title":"Implementation of a fast and simple space vector modulation scheme for a three-phase five-level neutral point clamped inverter","authors":"Zouhaira Ben Mahmoud, M. Hamouda, A. Khedher","doi":"10.1109/STA.2015.7505197","DOIUrl":"https://doi.org/10.1109/STA.2015.7505197","url":null,"abstract":"Multilevel inverters are nowadays considered among the most promising power conversion topologies for medium voltages and high power ranges. This work presents a fast space vector modulation algorithm (SVPWM) implemented on a three-phase five-level neutral point clamped (5L-NPC) inverter. The novelty of the proposed algorithm deals with the identification method of the adequate two-level small hexagon. This method computes the distance between each small hexagon center and the tip point of the reference space vector to be synthesized by the modulation algorithm. Therefore, the selected small hexagon is the one which has its center closest to the reference vector tip point. The remaining procedures needed to obtain the switching sequences of the transistors' gates are quite similar to those utilized by previous SVPWM algorithms. Computer simulations performed on a numerical model of the converter showed the effectiveness of the proposed identification method.","PeriodicalId":128530,"journal":{"name":"2015 16th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115172095","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: 5
Wind turbine high-speed shaft bearing degradation analysis for run-to-failure testing using spectral kurtosis 基于谱峰度分析的风电高速轴轴承运行失效分析
2015 16th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA) Pub Date : 2015-12-01 DOI: 10.1109/STA.2015.7505124
L. Saidi, Eric Bechhoefer, Jaouher Ben Ali, M. Benbouzid
{"title":"Wind turbine high-speed shaft bearing degradation analysis for run-to-failure testing using spectral kurtosis","authors":"L. Saidi, Eric Bechhoefer, Jaouher Ben Ali, M. Benbouzid","doi":"10.1109/STA.2015.7505124","DOIUrl":"https://doi.org/10.1109/STA.2015.7505124","url":null,"abstract":"Premature failures of wind turbine gearboxes increase the price of energy and affect their reliability. Most gearbox failures initiate in bearings. High-speed bearings and planetary bearings exhibit a high rate of premature failure. A critical work of bearing fault diagnosis is finding the optimum frequency band that covers faulty bearing signal, which is a challenging task in practice. The kurtogram is a high technic used to characterize non-stationarities hidden in a signal. Thus, allows responding to the given problem. It consists to determine the central frequency (resonance) and the appropriate bandwidth witch maximizes the kurtosis. This paper addresses a squared envelope based spectral kurtosis method diagnosis for skidding in high-speed shaft bearings. We have verified the potential of the spectral kurtosis diagnostic strategy in performance improvements for single-defect diagnosis using real measured data from a drive train wind turbine.","PeriodicalId":128530,"journal":{"name":"2015 16th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA)","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123603007","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: 12
Effect of the base negative drive on the turn-off transient behavior of Si and 4H-SiC power BJTs 基极负驱动对Si和4H-SiC功率bjt关断瞬态行为的影响
2015 16th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA) Pub Date : 2015-12-01 DOI: 10.1109/STA.2015.7505208
Mehrez Oueslati, H. Garrab, Atef Jedidi, H. Morel, K. Besbes
{"title":"Effect of the base negative drive on the turn-off transient behavior of Si and 4H-SiC power BJTs","authors":"Mehrez Oueslati, H. Garrab, Atef Jedidi, H. Morel, K. Besbes","doi":"10.1109/STA.2015.7505208","DOIUrl":"https://doi.org/10.1109/STA.2015.7505208","url":null,"abstract":"The study of the behavior of a power device operating in a power circuit while considering its interactions with the studied circuit remains a very important step in the power circuit design. The base drive has a primary order effect on the switching speed during the turn-off phase of power bipolar junction transistors. Hence, we will focus in this paper, through numerical simulation using the finite element method, on the influence of the base negative drive, on the turn-off transient behavior of Silicon and Silicon Carbide power bipolar junction transistors. Consequently, one of benefits of using Silicon Carbide material instead of Silicon in designing of power bipolar junction transistors has been highlighted.","PeriodicalId":128530,"journal":{"name":"2015 16th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA)","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127701581","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
Grid stability study after the integration of a wind farm 某风电场并网后电网稳定性研究
2015 16th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA) Pub Date : 2015-12-01 DOI: 10.1109/STA.2015.7505163
W. O. Amor, Hassen Ben Amar, M. Ghariani
{"title":"Grid stability study after the integration of a wind farm","authors":"W. O. Amor, Hassen Ben Amar, M. Ghariani","doi":"10.1109/STA.2015.7505163","DOIUrl":"https://doi.org/10.1109/STA.2015.7505163","url":null,"abstract":"Although the integration of wind farms into power grids is beneficial, it generally disturbs the quality and stability of power supply. In order to overcome the problems caused by electromechanical oscillation, additional stabilizing signals are used. Automatic voltage regulators act on the exciters to reach the desired voltage, and turbine governors act on the admission servo-motor to rectify the speed of the generator. Nonetheless, the interaction between the power system components and these devices requires optimization. The various results of simulations realized in the PSAT environment show the performance of the regulators integrated into the synchronous generators.","PeriodicalId":128530,"journal":{"name":"2015 16th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA)","volume":"225 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121124670","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: 3
Simulation and command of adam robot arm subjected to 3D external force 亚当机械臂在三维外力作用下的仿真与控制
2015 16th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA) Pub Date : 2015-12-01 DOI: 10.1109/STA.2015.7505203
Z. Chiheb, Jebli Tarek, A. Maalej
{"title":"Simulation and command of adam robot arm subjected to 3D external force","authors":"Z. Chiheb, Jebli Tarek, A. Maalej","doi":"10.1109/STA.2015.7505203","DOIUrl":"https://doi.org/10.1109/STA.2015.7505203","url":null,"abstract":"The aim of this article is the simulation and the control of three degree of freedom robotic arms using brushless DC motors. The two arms are used to maintain the stability of the robot in presence of external disturbances. We used an analytical approach based on the inverse dynamic model to determine the necessary configurations of the arms to stabilize the robot. The control of robotic arm is achieved by IPOS 4808 intelligent servo drives based on the latest DSP technology. We use the (TML) language and C++ to send motions. In this paper we show how to make the links between the PC and the drives also between the drives and the brushless motors. Before starting to send motion commands from the PC, the drive/motor setup using EasySetup was performed. In this paper we use the CAN bus to implement a network between the three IPOS.","PeriodicalId":128530,"journal":{"name":"2015 16th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA)","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126255120","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
Maximum power point tracking of a wind generation system based on T-S fuzzy model 基于T-S模糊模型的风力发电系统最大功率点跟踪
2015 16th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA) Pub Date : 2015-12-01 DOI: 10.1109/STA.2015.7505127
Naziha Harrabi, M. Kharrat, M. Souissi, A. Aitouche
{"title":"Maximum power point tracking of a wind generation system based on T-S fuzzy model","authors":"Naziha Harrabi, M. Kharrat, M. Souissi, A. Aitouche","doi":"10.1109/STA.2015.7505127","DOIUrl":"https://doi.org/10.1109/STA.2015.7505127","url":null,"abstract":"The current paper is presenting a Takagi-Sugeno (T-S) fuzzy controller designed for a wind generation system in the objective of Maximum Power Point Tracking (MPPT). The considered Wind Energy Conversion System (WECS) is composed of a wind turbine and a Permanent Magnet Synchronous Generator (PMSG) associated to an AC-DC converter. First, the WECS fuzzy model is presented based on T-S approach. Next, the proposed controller is designed using Linear Matrix Inequalities (LMI) techniques and Lyapunov stability approach. Simulation results bring out the efficiency of the proposed scheme.","PeriodicalId":128530,"journal":{"name":"2015 16th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127132874","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: 4
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