Pub Date : 2010-12-17DOI: 10.1109/ICCCCT.2010.5670748
S. Sheik Mohammed, K. Ramasamy, T. Shanmuganantham
A Sierpinski carpet edge-fed microstrip patch antenna is proposed for size reduction of rectenna of Wireless Power Transmission (WPT) System. The conventional patch antenna is designed based on transmission line model with the characteristics impedance of 50Ω. The fractal geometry for the conventional antenna is generated up to second iteration and simulated. The results shows that the maximum of 27.68 % size reduction can be achieved by the Sierpinski Carpet microstrip patch antenna of the second iteration order, without affecting the other performances such as return loss and radiation pattern.
{"title":"A 2.45GHz Sierpinski Carpet edge-fed microstrip patch fractal antenna for WPT rectenna","authors":"S. Sheik Mohammed, K. Ramasamy, T. Shanmuganantham","doi":"10.1109/ICCCCT.2010.5670748","DOIUrl":"https://doi.org/10.1109/ICCCCT.2010.5670748","url":null,"abstract":"A Sierpinski carpet edge-fed microstrip patch antenna is proposed for size reduction of rectenna of Wireless Power Transmission (WPT) System. The conventional patch antenna is designed based on transmission line model with the characteristics impedance of 50Ω. The fractal geometry for the conventional antenna is generated up to second iteration and simulated. The results shows that the maximum of 27.68 % size reduction can be achieved by the Sierpinski Carpet microstrip patch antenna of the second iteration order, without affecting the other performances such as return loss and radiation pattern.","PeriodicalId":432382,"journal":{"name":"2010 7th International Multi- Conference on Systems, Signals and Devices","volume":"154 7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-12-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125901825","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}
Pub Date : 2010-06-27DOI: 10.1109/SSD.2010.5585505
Serein Al-Ratrout, F. Siewe, Omar Al-Dabbas, M. AL-Fawair
This paper presents a novel multi-agent architecture for meeting scheduling. The proposed architecture is a new Hybrid Multi-Agent Architecture (HMAA) that generates new heuristics for solving NP-hard problems. Moreover, the paper investigates the feasibility of running computationally intensive algorithms on multi-agent architectures while preserving the ability of small agents to run on small devices, including mobile devices. Three experimental groups are conducted in order to test the feasibility of the proposed architecture. The results show that the performance of the proposed architecture is better than those of many existing meeting scheduling frameworks. Moreover, it has been proved that HMAA preserves small agents' mobility (i.e. the ability to run on small devices) while implementing evolutionary algorithms
{"title":"Hybrid Multi-Agent Architecture (HMAA) for meeting scheduling","authors":"Serein Al-Ratrout, F. Siewe, Omar Al-Dabbas, M. AL-Fawair","doi":"10.1109/SSD.2010.5585505","DOIUrl":"https://doi.org/10.1109/SSD.2010.5585505","url":null,"abstract":"This paper presents a novel multi-agent architecture for meeting scheduling. The proposed architecture is a new Hybrid Multi-Agent Architecture (HMAA) that generates new heuristics for solving NP-hard problems. Moreover, the paper investigates the feasibility of running computationally intensive algorithms on multi-agent architectures while preserving the ability of small agents to run on small devices, including mobile devices. Three experimental groups are conducted in order to test the feasibility of the proposed architecture. The results show that the performance of the proposed architecture is better than those of many existing meeting scheduling frameworks. Moreover, it has been proved that HMAA preserves small agents' mobility (i.e. the ability to run on small devices) while implementing evolutionary algorithms","PeriodicalId":432382,"journal":{"name":"2010 7th International Multi- Conference on Systems, Signals and Devices","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117138843","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}
Pub Date : 2010-06-27DOI: 10.1109/SSD.2010.5585595
Basil M. Saied, R. Antar
Power system and its installation utility suffer from harmonic pollution due to the nature of non-linear load applications. The most reliable and significant approach, in order to contribute to minimize the harmonic pollution, is to treat each type of load autonomously. Therefore, this paper is investigating all types of power components for a filter circuit which is designed and used to reduce the harmonic amplitudes of the ac supply currents of a three phase six pulse controlled converter. The simulation results show that the filter circuit is active and reliable in the rectification and inversion modes, where dc machine is used as a load or prime mover in order to fulfill both rectification and inversion modes. The suggested method compared with the conventional type shows that a considerable improvements in effective power factor, minimizing harmonics and power distortion. Also different approaches have been presented for all types of power components.
{"title":"The investigation of power distortion in a three-phase modified controlled converter circuit","authors":"Basil M. Saied, R. Antar","doi":"10.1109/SSD.2010.5585595","DOIUrl":"https://doi.org/10.1109/SSD.2010.5585595","url":null,"abstract":"Power system and its installation utility suffer from harmonic pollution due to the nature of non-linear load applications. The most reliable and significant approach, in order to contribute to minimize the harmonic pollution, is to treat each type of load autonomously. Therefore, this paper is investigating all types of power components for a filter circuit which is designed and used to reduce the harmonic amplitudes of the ac supply currents of a three phase six pulse controlled converter. The simulation results show that the filter circuit is active and reliable in the rectification and inversion modes, where dc machine is used as a load or prime mover in order to fulfill both rectification and inversion modes. The suggested method compared with the conventional type shows that a considerable improvements in effective power factor, minimizing harmonics and power distortion. Also different approaches have been presented for all types of power components.","PeriodicalId":432382,"journal":{"name":"2010 7th International Multi- Conference on Systems, Signals and Devices","volume":"78 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125853961","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}
Pub Date : 2010-06-27DOI: 10.1109/SSD.2010.5585516
O. Daoud, A. Damati, W. Al-Sawalmeh
This paper proposes a new peak-to-average power ratio (PAPR) reduction method for a multiple-input multiple-output (MIMO)-orthogonal frequency division multiplexing (OFDM) systems based on a genetic algorithm (GA). It has been introduced to be compatible with Radar systems, where the GA was used to optimize the MIMO-OFDM symbols in such way that could improve the system's performance. During this work, there was a comparison that has been stated among three systems; original radar system, radar system-based MIMO-OFDM and radar system-based MIMO-OFDM uses GA. Finally, a range of simulation results are provided to demonstrate the superiority of the proposed scheme, since it is showed an enhancement in the coverage distance besides reducing the PAPR effects.
{"title":"Enhancing the MIMO-OFDM Radar systems performance using GA","authors":"O. Daoud, A. Damati, W. Al-Sawalmeh","doi":"10.1109/SSD.2010.5585516","DOIUrl":"https://doi.org/10.1109/SSD.2010.5585516","url":null,"abstract":"This paper proposes a new peak-to-average power ratio (PAPR) reduction method for a multiple-input multiple-output (MIMO)-orthogonal frequency division multiplexing (OFDM) systems based on a genetic algorithm (GA). It has been introduced to be compatible with Radar systems, where the GA was used to optimize the MIMO-OFDM symbols in such way that could improve the system's performance. During this work, there was a comparison that has been stated among three systems; original radar system, radar system-based MIMO-OFDM and radar system-based MIMO-OFDM uses GA. Finally, a range of simulation results are provided to demonstrate the superiority of the proposed scheme, since it is showed an enhancement in the coverage distance besides reducing the PAPR effects.","PeriodicalId":432382,"journal":{"name":"2010 7th International Multi- Conference on Systems, Signals and Devices","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115243292","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}
Pub Date : 2010-06-27DOI: 10.1109/SSD.2010.5585600
A. Sabaawi, K. Quboa
In this paper, a new modified wideband dipole antenna for passive UHF RFID is designed, simulated, fabricated and tested. The modification is done by adding vertical and horizontal stubs to the structure of the ordinary dipole antenna to reduce its length and broaden its bandwidth. IE3D full-wave electromagnetic simulator is used to simulate the modified dipole and compare it with the ordinary dipole antennas. The results showed that the modified dipole is shorter by (14%) and has wider bandwidth by (274.55%) which makes it able to cover the entire frequency band dedicated for UHF RFID systems (860 MHz ∼ 960 MHz). The modified dipole antenna is fabricated using PCB technology and its parameters are measured in an anechoic chamber. The effect of different materials on antenna performance also studied in this paper.
{"title":"Wideband modified dipole antenna for passive UHF RFID tags","authors":"A. Sabaawi, K. Quboa","doi":"10.1109/SSD.2010.5585600","DOIUrl":"https://doi.org/10.1109/SSD.2010.5585600","url":null,"abstract":"In this paper, a new modified wideband dipole antenna for passive UHF RFID is designed, simulated, fabricated and tested. The modification is done by adding vertical and horizontal stubs to the structure of the ordinary dipole antenna to reduce its length and broaden its bandwidth. IE3D full-wave electromagnetic simulator is used to simulate the modified dipole and compare it with the ordinary dipole antennas. The results showed that the modified dipole is shorter by (14%) and has wider bandwidth by (274.55%) which makes it able to cover the entire frequency band dedicated for UHF RFID systems (860 MHz ∼ 960 MHz). The modified dipole antenna is fabricated using PCB technology and its parameters are measured in an anechoic chamber. The effect of different materials on antenna performance also studied in this paper.","PeriodicalId":432382,"journal":{"name":"2010 7th International Multi- Conference on Systems, Signals and Devices","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128798383","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}
Pub Date : 2010-06-27DOI: 10.1109/SSD.2010.5585526
A. Boudabous, A. Ben Atitallah, L. Khriji, P. Kadionik, N. Masmoudi
This paper proposes a novel FPGA implementation of Vector Directional Distance Rational Hybrid Filter) (VDDRHF) for mixed noise suppression and fine-details preservation in color images. The Implementation was done, based on FPGA HW/SW validation using efficient hardware optimizations and non linear function approximations. The validation using FPGA board confirms the color image quality preservation. Our proposed architecture proves that HW/SW co-design present a high timing performance compared to software based solutions.
{"title":"Hardware implementation and experiment validation of the VDDRHF color image filter","authors":"A. Boudabous, A. Ben Atitallah, L. Khriji, P. Kadionik, N. Masmoudi","doi":"10.1109/SSD.2010.5585526","DOIUrl":"https://doi.org/10.1109/SSD.2010.5585526","url":null,"abstract":"This paper proposes a novel FPGA implementation of Vector Directional Distance Rational Hybrid Filter) (VDDRHF) for mixed noise suppression and fine-details preservation in color images. The Implementation was done, based on FPGA HW/SW validation using efficient hardware optimizations and non linear function approximations. The validation using FPGA board confirms the color image quality preservation. Our proposed architecture proves that HW/SW co-design present a high timing performance compared to software based solutions.","PeriodicalId":432382,"journal":{"name":"2010 7th International Multi- Conference on Systems, Signals and Devices","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121533670","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}
Pub Date : 2010-06-27DOI: 10.1109/SSD.2010.5585585
A. Kouzou, M. Mahmoudi, M. Boucherit
This paper deals with the improvement of the output voltage of the DC/DC chopper interface of fuel Cell (FC) source. The main objective is to overcome the drawback of voltage/current ripple which can be achieved by the reduction or elimination of the low harmonics frequency from the output voltage/current, to fulfill this requirement the SHE-PWM control algorithm is used, where the choice of the switching angles is based on the heuristic particle swarm optimization (PSO) method, therefore a new objective function is proposed presenting minimizing problem and the constraints of the switching angles sequences and the length of the chopping period. Finding the global minimum of this function leads to the elimination of the selected harmonics, whereas, keeping the average value of the output voltage equals to the desired value or the reference value.
{"title":"Fuel Cell SHE-PWM DC/DC chopper interface based on particle swarm optimization","authors":"A. Kouzou, M. Mahmoudi, M. Boucherit","doi":"10.1109/SSD.2010.5585585","DOIUrl":"https://doi.org/10.1109/SSD.2010.5585585","url":null,"abstract":"This paper deals with the improvement of the output voltage of the DC/DC chopper interface of fuel Cell (FC) source. The main objective is to overcome the drawback of voltage/current ripple which can be achieved by the reduction or elimination of the low harmonics frequency from the output voltage/current, to fulfill this requirement the SHE-PWM control algorithm is used, where the choice of the switching angles is based on the heuristic particle swarm optimization (PSO) method, therefore a new objective function is proposed presenting minimizing problem and the constraints of the switching angles sequences and the length of the chopping period. Finding the global minimum of this function leads to the elimination of the selected harmonics, whereas, keeping the average value of the output voltage equals to the desired value or the reference value.","PeriodicalId":432382,"journal":{"name":"2010 7th International Multi- Conference on Systems, Signals and Devices","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127664389","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}
Pub Date : 2010-06-27DOI: 10.1109/SSD.2010.5585533
A. Ibala, A. Masmoudi
This paper deals with finite element analysis (FEA) modeling and features investigation of a claw pole alternator with its DC-excitation winding is located in the stator rather than in the rotor in conventional machines. The proposed model takes into account for the saturation of the magnetic circuit. A special attention is paid to the distribution of the air gap flux density and the back-EMF. A validation of the results yielded by FEA is achieved considering both measurements carried out on a prototype of the studied machine and analytical results obtained by a reluctance model developed in a previous work.
{"title":"3D FEA based feature investigation of a claw pole alternator with DC excitation in the stator","authors":"A. Ibala, A. Masmoudi","doi":"10.1109/SSD.2010.5585533","DOIUrl":"https://doi.org/10.1109/SSD.2010.5585533","url":null,"abstract":"This paper deals with finite element analysis (FEA) modeling and features investigation of a claw pole alternator with its DC-excitation winding is located in the stator rather than in the rotor in conventional machines. The proposed model takes into account for the saturation of the magnetic circuit. A special attention is paid to the distribution of the air gap flux density and the back-EMF. A validation of the results yielded by FEA is achieved considering both measurements carried out on a prototype of the studied machine and analytical results obtained by a reluctance model developed in a previous work.","PeriodicalId":432382,"journal":{"name":"2010 7th International Multi- Conference on Systems, Signals and Devices","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117306943","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}
Pub Date : 2010-06-27DOI: 10.1109/SSD.2010.5585596
Khalil H. Sayidmarie, Baedaa J. M. Jasem
In phased arrays the mainbeam is scanned by either varying the phase excitations of the elements or varying the frequency of operation. In spite of their extensive use, these methods need either variable phase shifters or frequency sweeping. It is shown here that beam scanning is also feasible by varying magnitudes of the array element excitations thus alleviating the need for phase shifters or frequency variation. In this technique, the amplitude excitations of some side elements are reduced while those of the others are increased by proper power division or weighting in the feed network of the array. Theoretical analysis and computer simulations are presented to verify the proposed idea. A 3-element array is studied first, then the idea is extended to a 7-element array. Simulation results show appreciable scan angles with minor variation in the mainbeam level. Some degradation in the array pattern is noticed at large scan angles.
{"title":"Amplitude-only beam scanning in linear antenna arrays","authors":"Khalil H. Sayidmarie, Baedaa J. M. Jasem","doi":"10.1109/SSD.2010.5585596","DOIUrl":"https://doi.org/10.1109/SSD.2010.5585596","url":null,"abstract":"In phased arrays the mainbeam is scanned by either varying the phase excitations of the elements or varying the frequency of operation. In spite of their extensive use, these methods need either variable phase shifters or frequency sweeping. It is shown here that beam scanning is also feasible by varying magnitudes of the array element excitations thus alleviating the need for phase shifters or frequency variation. In this technique, the amplitude excitations of some side elements are reduced while those of the others are increased by proper power division or weighting in the feed network of the array. Theoretical analysis and computer simulations are presented to verify the proposed idea. A 3-element array is studied first, then the idea is extended to a 7-element array. Simulation results show appreciable scan angles with minor variation in the mainbeam level. Some degradation in the array pattern is noticed at large scan angles.","PeriodicalId":432382,"journal":{"name":"2010 7th International Multi- Conference on Systems, Signals and Devices","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114308645","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}
Pub Date : 2010-06-27DOI: 10.1109/SSD.2010.5585563
Mabrouka Laabidi, Bechir Rebhi, F. Kourda, M. Elleuch, Labid Ghodbani
Braking of induction motor has been the subject of many researches in order to improve its performances. Many braking induction motor's strategies have been developed. Conventional braking modes are electromechanical such as braking with servo motor and counter current braking; then electrical one as direct current braking (DC). These two techniques have major drawbacks which limit their use. The first one is characterized by high braking current which reaches 7 pu and for the second one, brake torque is important only low speeds. In this paper a new electrical braking mode based on discrete variable frequency control (DFC) is suggested. Its is leading to significant reduction of braking current and improve the braking torque. The proposed strategy has been verified experimentally on a laboratory machine using induction motor feed by three phase inverter, AC thyristors monitored by a microcontroller PIC 16F867.
{"title":"Braking of induction motor with the technique of discrete frequency control","authors":"Mabrouka Laabidi, Bechir Rebhi, F. Kourda, M. Elleuch, Labid Ghodbani","doi":"10.1109/SSD.2010.5585563","DOIUrl":"https://doi.org/10.1109/SSD.2010.5585563","url":null,"abstract":"Braking of induction motor has been the subject of many researches in order to improve its performances. Many braking induction motor's strategies have been developed. Conventional braking modes are electromechanical such as braking with servo motor and counter current braking; then electrical one as direct current braking (DC). These two techniques have major drawbacks which limit their use. The first one is characterized by high braking current which reaches 7 pu and for the second one, brake torque is important only low speeds. In this paper a new electrical braking mode based on discrete variable frequency control (DFC) is suggested. Its is leading to significant reduction of braking current and improve the braking torque. The proposed strategy has been verified experimentally on a laboratory machine using induction motor feed by three phase inverter, AC thyristors monitored by a microcontroller PIC 16F867.","PeriodicalId":432382,"journal":{"name":"2010 7th International Multi- Conference on Systems, Signals and Devices","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123446204","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}
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