Pub Date : 2016-12-01DOI: 10.1109/ICEDSA.2016.7818494
A. Adam, A. Elnady, A. Ghias
This paper deals with controlling DC motor speed and/or torque through the multilevel Chopper circuit. The proposed switching circuit consists of four cascaded switching elements with three clamping diodes and four equal or different voltage sources connected in series. The configuration provides a constant five levels of voltage and has the ability to generate and track any reference input voltage within the source voltage range. The generated voltage has relatively very small harmonic and ripples compared to the traditional step down chopper. The profile of the generated voltage positively affects the performance of the motor armature current, the generated dynamic torque and the rotor. The simulation results show adequate voltage reference tracking, smooth speed response and reduced current and torque ripples, which normally reflect in smaller mechanical vibration and acoustic noise.
{"title":"A novel multilevel DC chopper supplying DC motor","authors":"A. Adam, A. Elnady, A. Ghias","doi":"10.1109/ICEDSA.2016.7818494","DOIUrl":"https://doi.org/10.1109/ICEDSA.2016.7818494","url":null,"abstract":"This paper deals with controlling DC motor speed and/or torque through the multilevel Chopper circuit. The proposed switching circuit consists of four cascaded switching elements with three clamping diodes and four equal or different voltage sources connected in series. The configuration provides a constant five levels of voltage and has the ability to generate and track any reference input voltage within the source voltage range. The generated voltage has relatively very small harmonic and ripples compared to the traditional step down chopper. The profile of the generated voltage positively affects the performance of the motor armature current, the generated dynamic torque and the rotor. The simulation results show adequate voltage reference tracking, smooth speed response and reduced current and torque ripples, which normally reflect in smaller mechanical vibration and acoustic noise.","PeriodicalId":247318,"journal":{"name":"2016 5th International Conference on Electronic Devices, Systems and Applications (ICEDSA)","volume":"125 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132348154","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 : 2016-12-01DOI: 10.1109/ICEDSA.2016.7818470
F. T. Almutairi, Reem T. Almutairi
In this paper, a developed theoretical model of phase-locked loops (PLL) frequency synthesizer is presented. The proposed model aims to improve the control accuracy and reducing the lock time. A conventional phase-locked loop is designed using a backstepping control algorithm to operate at 2.2GHz using 0.18μm CMOS technology. The lock time was reduced by adding backstepping technology in addition with the traditional second order loop filter and the tuning variables of the backstepping control in order to ensure the control accuracy. The simulation results indicate that the performance of backstepping PLL control are superior and are more effective than conventional PLL. The lock time for the conventional PLL was 2.1 μs. By adding backstepping controller the lock time become 1μs showing the improvement and reduction of the lock time by 53% over the conventional PLL.
{"title":"Fast-lock phase-locked loop with adaptive controller in 0.18-μm CMOS","authors":"F. T. Almutairi, Reem T. Almutairi","doi":"10.1109/ICEDSA.2016.7818470","DOIUrl":"https://doi.org/10.1109/ICEDSA.2016.7818470","url":null,"abstract":"In this paper, a developed theoretical model of phase-locked loops (PLL) frequency synthesizer is presented. The proposed model aims to improve the control accuracy and reducing the lock time. A conventional phase-locked loop is designed using a backstepping control algorithm to operate at 2.2GHz using 0.18μm CMOS technology. The lock time was reduced by adding backstepping technology in addition with the traditional second order loop filter and the tuning variables of the backstepping control in order to ensure the control accuracy. The simulation results indicate that the performance of backstepping PLL control are superior and are more effective than conventional PLL. The lock time for the conventional PLL was 2.1 μs. By adding backstepping controller the lock time become 1μs showing the improvement and reduction of the lock time by 53% over the conventional PLL.","PeriodicalId":247318,"journal":{"name":"2016 5th International Conference on Electronic Devices, Systems and Applications (ICEDSA)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132269921","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 : 2016-12-01DOI: 10.1109/ICEDSA.2016.7818527
Ahmed R. Babikir, A. Jarndal
In this paper, a multi-purpose wireless charger design and implementation procedure is presented. A simple design based on Colpitts oscillator has been used to implement the transmitter side. The structure of the receiver coil has been optimized to improve the coupling efficiency. The system has been fabricated, cased and tested with different mobile devices and tablets.
{"title":"Design and implementation of a multi-purpose wireless charger","authors":"Ahmed R. Babikir, A. Jarndal","doi":"10.1109/ICEDSA.2016.7818527","DOIUrl":"https://doi.org/10.1109/ICEDSA.2016.7818527","url":null,"abstract":"In this paper, a multi-purpose wireless charger design and implementation procedure is presented. A simple design based on Colpitts oscillator has been used to implement the transmitter side. The structure of the receiver coil has been optimized to improve the coupling efficiency. The system has been fabricated, cased and tested with different mobile devices and tablets.","PeriodicalId":247318,"journal":{"name":"2016 5th International Conference on Electronic Devices, Systems and Applications (ICEDSA)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133009762","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 : 2016-12-01DOI: 10.1109/ICEDSA.2016.7818474
Muhammad Abdul Samad, A. Hamid
A miniaturized opened ended rectangular waveguide antenna radiating below the cutoff frequency of the waveguide is investigated. Miniaturization of the waveguide is achieved by loading the antenna with electromagnetic metamaterial (MTM) consisting of Square Shaped Ring Resonators (SSRR) or Circular shaped Ring Resonators (CSRR). These metamaterials provide the waveguide the ability to support the propagation of the backward wave below the cutoff frequency. The investigated open waveguide radiator was designed and simulated using High Frequency Structure Simulator HFSStm commercial software. Comparing the former work of miniaturized waveguides, we were able to obtain miniaturized antenna with 44.5 % reduction.
{"title":"Miniaturization of waveguide antenna using square/circular arrays of SRR","authors":"Muhammad Abdul Samad, A. Hamid","doi":"10.1109/ICEDSA.2016.7818474","DOIUrl":"https://doi.org/10.1109/ICEDSA.2016.7818474","url":null,"abstract":"A miniaturized opened ended rectangular waveguide antenna radiating below the cutoff frequency of the waveguide is investigated. Miniaturization of the waveguide is achieved by loading the antenna with electromagnetic metamaterial (MTM) consisting of Square Shaped Ring Resonators (SSRR) or Circular shaped Ring Resonators (CSRR). These metamaterials provide the waveguide the ability to support the propagation of the backward wave below the cutoff frequency. The investigated open waveguide radiator was designed and simulated using High Frequency Structure Simulator HFSStm commercial software. Comparing the former work of miniaturized waveguides, we were able to obtain miniaturized antenna with 44.5 % reduction.","PeriodicalId":247318,"journal":{"name":"2016 5th International Conference on Electronic Devices, Systems and Applications (ICEDSA)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115608821","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 : 2016-12-01DOI: 10.1109/ICEDSA.2016.7818500
Muna Ali Al Hebsi, Vishwesh Akre
This research paper has identified key factors that impact iPad implementation in technical education. It also proposes a framework of effective implementation of iPad in technical education that addresses the key success factors.
{"title":"A framework for integrating iPAD as a pedagogical device in higher education","authors":"Muna Ali Al Hebsi, Vishwesh Akre","doi":"10.1109/ICEDSA.2016.7818500","DOIUrl":"https://doi.org/10.1109/ICEDSA.2016.7818500","url":null,"abstract":"This research paper has identified key factors that impact iPad implementation in technical education. It also proposes a framework of effective implementation of iPad in technical education that addresses the key success factors.","PeriodicalId":247318,"journal":{"name":"2016 5th International Conference on Electronic Devices, Systems and Applications (ICEDSA)","volume":"53 33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123351299","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 : 2016-12-01DOI: 10.1109/ICEDSA.2016.7818503
I. J. Rajmohan, M. Hussein
In this paper, a hexagonal patch antenna with modified L-shaped slots, used for multiband applications is proposed. FR4 is the substrate used with dielectric constant of 3.85. Modified L-shaped slots are arranged on patch to give resonator effects and are been used to generate multiple bands in the antenna. The proposed antenna offers multiband response at resonant frequencies of 3.5GHz, 5.8 GHz, 8.9 GHz and 10.7 GHz. The simulated results shows good performance with a minimum reflection loss of −23.14 dB and VSWR<2.
{"title":"A multiband planar antenna design using hexagonal patch and a resonator slot","authors":"I. J. Rajmohan, M. Hussein","doi":"10.1109/ICEDSA.2016.7818503","DOIUrl":"https://doi.org/10.1109/ICEDSA.2016.7818503","url":null,"abstract":"In this paper, a hexagonal patch antenna with modified L-shaped slots, used for multiband applications is proposed. FR4 is the substrate used with dielectric constant of 3.85. Modified L-shaped slots are arranged on patch to give resonator effects and are been used to generate multiple bands in the antenna. The proposed antenna offers multiband response at resonant frequencies of 3.5GHz, 5.8 GHz, 8.9 GHz and 10.7 GHz. The simulated results shows good performance with a minimum reflection loss of −23.14 dB and VSWR<2.","PeriodicalId":247318,"journal":{"name":"2016 5th International Conference on Electronic Devices, Systems and Applications (ICEDSA)","volume":"105 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124698822","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 : 2016-12-01DOI: 10.1109/ICEDSA.2016.7818556
Mohammad A. Alqudah, M. Abdelfattah, I. Boiko, K. Alhammadi
The self-balancing two-wheel chair (SBC) is an unconventional type of personal transportation vehicle. It has unstable dynamics and therefore requires a special control to stabilize and prevent it from falling and to ensure the possibility of speed control and steering by the rider. This paper discusses the dynamic modeling and controller design for the system. The model of SBC is based on analysis of the motions of the inverted pendulum on a mobile base complemented with equations of the wheel motion and motor dynamics. The proposed control design involves a multi-loop PID control. Experimental verification and prototype implementation are discussed.
{"title":"Dynamic modeling and control design for a self-balancing two-wheel chair","authors":"Mohammad A. Alqudah, M. Abdelfattah, I. Boiko, K. Alhammadi","doi":"10.1109/ICEDSA.2016.7818556","DOIUrl":"https://doi.org/10.1109/ICEDSA.2016.7818556","url":null,"abstract":"The self-balancing two-wheel chair (SBC) is an unconventional type of personal transportation vehicle. It has unstable dynamics and therefore requires a special control to stabilize and prevent it from falling and to ensure the possibility of speed control and steering by the rider. This paper discusses the dynamic modeling and controller design for the system. The model of SBC is based on analysis of the motions of the inverted pendulum on a mobile base complemented with equations of the wheel motion and motor dynamics. The proposed control design involves a multi-loop PID control. Experimental verification and prototype implementation are discussed.","PeriodicalId":247318,"journal":{"name":"2016 5th International Conference on Electronic Devices, Systems and Applications (ICEDSA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130879069","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 : 2016-12-01DOI: 10.1109/ICEDSA.2016.7818528
Manal Abdulla Aljaberi, S. Khan, Suadad Muammar
Green computing has been receiving lot of attention because of the growing environmental concerns and swelling energy consumption costs. Developments of computing performance and reduction in the consumption of energy and carbon footprints are among the most important objectives of green computing. Aim of this study is to explore and advance the green computing implementation practices among United Arab Emirates (UAE) organizations. Exploration of the green computing implementations in organizations within UAE revealed the awareness level of mere 41.23%, thus prompting the researchers to propose a model for the successful implementation of green computing. Proposed model derived from literature and validated among employees in various organizations in UAE aims to help organizations to go green.
{"title":"Green computing implementation factors: UAE case study","authors":"Manal Abdulla Aljaberi, S. Khan, Suadad Muammar","doi":"10.1109/ICEDSA.2016.7818528","DOIUrl":"https://doi.org/10.1109/ICEDSA.2016.7818528","url":null,"abstract":"Green computing has been receiving lot of attention because of the growing environmental concerns and swelling energy consumption costs. Developments of computing performance and reduction in the consumption of energy and carbon footprints are among the most important objectives of green computing. Aim of this study is to explore and advance the green computing implementation practices among United Arab Emirates (UAE) organizations. Exploration of the green computing implementations in organizations within UAE revealed the awareness level of mere 41.23%, thus prompting the researchers to propose a model for the successful implementation of green computing. Proposed model derived from literature and validated among employees in various organizations in UAE aims to help organizations to go green.","PeriodicalId":247318,"journal":{"name":"2016 5th International Conference on Electronic Devices, Systems and Applications (ICEDSA)","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129283127","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 : 2016-12-01DOI: 10.1109/ICEDSA.2016.7818471
A. Abualsaud, S. Qaisar, Sara H. Ba-Abdullah, Zainab M. Al-Sheikh, M. Akbar
The DSP (Digital Signal Processing) has many advantages over the analog processing. Therefore, with the recent advent of technology most of the signal processing tasks have been transferred from the analog to the digital domain. The ADCs (Analog to Digital Converter) provide a liaison between the real world analog signals and the digital processors. Therefore, ADCs become an elementary part of almost all modern electronic systems. This work focuses on the development of a simple Flash ADC for students demonstration purpose. In this context, a 5-Bit Flash ADC is implemented. Being designed for illustration purpose, the ADC has easily accessible inputs and outputs to each module. In order to keep the system cost effective with an ease of reimplementation. The low cost and easily market available discrete analog components are employed. The digital part is kept configurable with the help of a FPGA (Field Programmable Gate Array) based implementation. The digital circuit implementation is done via Verilog, a HDL (Hardware Description Language). The system implementation is described. Testing results are also presented. These results assure a proper functionality of the designed ADC.
{"title":"Design and implementation of a 5-bit flash ADC for education","authors":"A. Abualsaud, S. Qaisar, Sara H. Ba-Abdullah, Zainab M. Al-Sheikh, M. Akbar","doi":"10.1109/ICEDSA.2016.7818471","DOIUrl":"https://doi.org/10.1109/ICEDSA.2016.7818471","url":null,"abstract":"The DSP (Digital Signal Processing) has many advantages over the analog processing. Therefore, with the recent advent of technology most of the signal processing tasks have been transferred from the analog to the digital domain. The ADCs (Analog to Digital Converter) provide a liaison between the real world analog signals and the digital processors. Therefore, ADCs become an elementary part of almost all modern electronic systems. This work focuses on the development of a simple Flash ADC for students demonstration purpose. In this context, a 5-Bit Flash ADC is implemented. Being designed for illustration purpose, the ADC has easily accessible inputs and outputs to each module. In order to keep the system cost effective with an ease of reimplementation. The low cost and easily market available discrete analog components are employed. The digital part is kept configurable with the help of a FPGA (Field Programmable Gate Array) based implementation. The digital circuit implementation is done via Verilog, a HDL (Hardware Description Language). The system implementation is described. Testing results are also presented. These results assure a proper functionality of the designed ADC.","PeriodicalId":247318,"journal":{"name":"2016 5th International Conference on Electronic Devices, Systems and Applications (ICEDSA)","volume":"45 19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128417875","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 : 2016-12-01DOI: 10.1109/ICEDSA.2016.7818552
Sahar Adil, Adel Al-Jumaily, K. Anam
Crouch Gait (CG) can be observed in the hemiplegia persons after ischemic stroke. Walking with Crouch Gait (CG) shown a large gaits disorder. This paper explores the use of adaptive wavelet extreme learning machine (AW-ELM) to classifying different gait conditions for hemiplegia and healthy subjects. Three participants having a Crouch Gait problem with categories of Mild, Moderate, and Severe gait conditions, also, one Healthy person are used their data in this work. The recognition system extracting number of time and frequency domain features for dimensionality reduction. While for the classification stage, the common Extreme Learning Machine (ELM) classifiers are used. AW-ELM achieved maximum testing accuracy up to 91.149 % and with using majority vote post-processing the accuracy achieves 91.547 %.
{"title":"AW-ELM-based Crouch Gait recognition after ischemic stroke","authors":"Sahar Adil, Adel Al-Jumaily, K. Anam","doi":"10.1109/ICEDSA.2016.7818552","DOIUrl":"https://doi.org/10.1109/ICEDSA.2016.7818552","url":null,"abstract":"Crouch Gait (CG) can be observed in the hemiplegia persons after ischemic stroke. Walking with Crouch Gait (CG) shown a large gaits disorder. This paper explores the use of adaptive wavelet extreme learning machine (AW-ELM) to classifying different gait conditions for hemiplegia and healthy subjects. Three participants having a Crouch Gait problem with categories of Mild, Moderate, and Severe gait conditions, also, one Healthy person are used their data in this work. The recognition system extracting number of time and frequency domain features for dimensionality reduction. While for the classification stage, the common Extreme Learning Machine (ELM) classifiers are used. AW-ELM achieved maximum testing accuracy up to 91.149 % and with using majority vote post-processing the accuracy achieves 91.547 %.","PeriodicalId":247318,"journal":{"name":"2016 5th International Conference on Electronic Devices, Systems and Applications (ICEDSA)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126429036","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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