Pub Date : 2009-12-18DOI: 10.1109/ISIEA.2009.5356348
T. Mantoro, A. Azizan, Salahudin Khairuzzaman, M. A. Ayu
Wi-Fi's signals strength (SS), and signal quality (SQ) are found to greatly fluctuate in determination of symbolic user location in an indoor environment. This paper explores the influence of several different training data-sets in determining user's symbolic location. The implementation and experimentation were done using off-line instance-based machine learning methods to filter all of the training data-sets. The training data-sets were optimized using “multiple observers” k-Nearest Neighbor approach. Using this method, four different observations were compared, which were 8M observations of SQ and SS , 8M SS observers, 1M SQ and SS and the last was 1M SS observers. Then, a continuing determination of the user location was performed by finding the majority of the nearest ten (k=10) user locations.
{"title":"Multi-observers instance-based learning approach for indoor symbolic user location determination using IEEE 802.11 signals","authors":"T. Mantoro, A. Azizan, Salahudin Khairuzzaman, M. A. Ayu","doi":"10.1109/ISIEA.2009.5356348","DOIUrl":"https://doi.org/10.1109/ISIEA.2009.5356348","url":null,"abstract":"Wi-Fi's signals strength (SS), and signal quality (SQ) are found to greatly fluctuate in determination of symbolic user location in an indoor environment. This paper explores the influence of several different training data-sets in determining user's symbolic location. The implementation and experimentation were done using off-line instance-based machine learning methods to filter all of the training data-sets. The training data-sets were optimized using “multiple observers” k-Nearest Neighbor approach. Using this method, four different observations were compared, which were 8M observations of SQ and SS , 8M SS observers, 1M SQ and SS and the last was 1M SS observers. Then, a continuing determination of the user location was performed by finding the majority of the nearest ten (k=10) user locations.","PeriodicalId":6447,"journal":{"name":"2009 IEEE Symposium on Industrial Electronics & Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85916115","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 : 2009-12-18DOI: 10.1109/ISIEA.2009.5356486
R. Choras
We present two problems in the article, first concerns persons identification based on the shape of the hand and the second recognizing gestures and signs executed by hands. Hand-based authentication schemes in the literature are mostly based on invariant geometrical features, typically including length and width of the fingers, aspect ratio of the palm or fingers, thickness of the hand, etc.. These features are not as discriminating as other biometric characteristics, however they can easily be used for verification purpose. Gesture recognition is the process by which gestures formed by a user interact with the computer or is the element of the special signs language to convey meaning. In this paper are propose a method for the recognition of hand gestures using geometrical and Radon transform (RT) features.
{"title":"Hand shape and hand gesture recognition","authors":"R. Choras","doi":"10.1109/ISIEA.2009.5356486","DOIUrl":"https://doi.org/10.1109/ISIEA.2009.5356486","url":null,"abstract":"We present two problems in the article, first concerns persons identification based on the shape of the hand and the second recognizing gestures and signs executed by hands. Hand-based authentication schemes in the literature are mostly based on invariant geometrical features, typically including length and width of the fingers, aspect ratio of the palm or fingers, thickness of the hand, etc.. These features are not as discriminating as other biometric characteristics, however they can easily be used for verification purpose. Gesture recognition is the process by which gestures formed by a user interact with the computer or is the element of the special signs language to convey meaning. In this paper are propose a method for the recognition of hand gestures using geometrical and Radon transform (RT) features.","PeriodicalId":6447,"journal":{"name":"2009 IEEE Symposium on Industrial Electronics & Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87272070","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 : 2009-12-18DOI: 10.1109/ISIEA.2009.5356407
H. Athab, K. Ramar, D. Dah-Chuan Lu
This paper presents a novel input current shaper based on a quasi-active power factor correction (PFC) scheme. The power factor is improved by adding two auxiliary windings coupled to the transformer of a cascade dc/dc flyback converter. The auxiliary windings are placed between the input rectifier and the low-frequency filter capacitor to serve as a magnetic switch to drive an input inductor. Since the dc/dc converter is operated at high switching frequency, the auxiliary windings produce a high frequency pulsating source such that the input current conduction angle is significantly lengthened and the input current harmonics is reduced. It eliminates the use of active switch and control circuit for PFC. The input inductor can be designed to operate in discontinuous current mode (DCM) with lower harmonic content or continuous conduction mode (CCM) with higher efficiency. However, a trade-off between efficiency and harmonic content must be made. Operating principles, analysis, simulation and practical results of the proposed method are presented.
{"title":"An efficient quasi-active power factor correction scheme","authors":"H. Athab, K. Ramar, D. Dah-Chuan Lu","doi":"10.1109/ISIEA.2009.5356407","DOIUrl":"https://doi.org/10.1109/ISIEA.2009.5356407","url":null,"abstract":"This paper presents a novel input current shaper based on a quasi-active power factor correction (PFC) scheme. The power factor is improved by adding two auxiliary windings coupled to the transformer of a cascade dc/dc flyback converter. The auxiliary windings are placed between the input rectifier and the low-frequency filter capacitor to serve as a magnetic switch to drive an input inductor. Since the dc/dc converter is operated at high switching frequency, the auxiliary windings produce a high frequency pulsating source such that the input current conduction angle is significantly lengthened and the input current harmonics is reduced. It eliminates the use of active switch and control circuit for PFC. The input inductor can be designed to operate in discontinuous current mode (DCM) with lower harmonic content or continuous conduction mode (CCM) with higher efficiency. However, a trade-off between efficiency and harmonic content must be made. Operating principles, analysis, simulation and practical results of the proposed method are presented.","PeriodicalId":6447,"journal":{"name":"2009 IEEE Symposium on Industrial Electronics & Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83685140","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 : 2009-12-18DOI: 10.1109/ISIEA.2009.5356305
G. R. Haron, Ng Kang Siong, Sea Chong Seak, T. Bee
The paper presents a technical solution to issue proxy certificate for grid end users using hardware and software token in grid systems. These tokens consist of user identity certificate and keys associated with the certificate. The discussion is initiated with the adoption of current solution; MyProxy as a generator of proxy certificate and credential repository for grid systems. Ongoing efforts are made towards improvising the security of MyProxy. As an alternative of these efforts, a new solution is proposed which will maintain grid workflow functionality without the requisite of MyProxy. The new solution offers minimum security administration which shall give competitive advantage in issuing proxy certificate for grid in Windows environment.
{"title":"Extending security token to directly issue proxy certificate on P-GRADE portal","authors":"G. R. Haron, Ng Kang Siong, Sea Chong Seak, T. Bee","doi":"10.1109/ISIEA.2009.5356305","DOIUrl":"https://doi.org/10.1109/ISIEA.2009.5356305","url":null,"abstract":"The paper presents a technical solution to issue proxy certificate for grid end users using hardware and software token in grid systems. These tokens consist of user identity certificate and keys associated with the certificate. The discussion is initiated with the adoption of current solution; MyProxy as a generator of proxy certificate and credential repository for grid systems. Ongoing efforts are made towards improvising the security of MyProxy. As an alternative of these efforts, a new solution is proposed which will maintain grid workflow functionality without the requisite of MyProxy. The new solution offers minimum security administration which shall give competitive advantage in issuing proxy certificate for grid in Windows environment.","PeriodicalId":6447,"journal":{"name":"2009 IEEE Symposium on Industrial Electronics & Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83232595","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 : 2009-12-18DOI: 10.1109/ISIEA.2009.5356377
J. Sameni, N. Bukhari, N. A. Azlan, T. Julianto, A. Majeed
Nanoparticles now have various pharmaceutical and biomedical applications due to the many advantages such as improvement in drug bioavailability, ability to cross barriers after oral and parentral administration, and being an excellent drug carrier for insoluble drugs. However, size and morphological characteristics of nanoparticles are critical for drug release in the body, warranting understanding the parameters controlling the above characteristics. This paper describes, firstly, preparation parameters to optimize the size of polylactic-co-glycolic acid (PLGA)-based nanoparticles, and secondly, study the morphology of the same nanoparticles, formed by the emulsion solvent evaporation technique. The solvent evaporation technique involves an aqueous phase containing polyvinyl alcohol (PVA) as a stabilizing agent. After washing, the samples were freeze-dried and analyzed using particle size analyzer and scanning electron microscope. The preparation parameters studied included; homogenizing speed, homogenizing time, stabilizer concentration and temperature.
{"title":"The effect of preparation parameters on the size and morphology of PLGA-based nanoparticles","authors":"J. Sameni, N. Bukhari, N. A. Azlan, T. Julianto, A. Majeed","doi":"10.1109/ISIEA.2009.5356377","DOIUrl":"https://doi.org/10.1109/ISIEA.2009.5356377","url":null,"abstract":"Nanoparticles now have various pharmaceutical and biomedical applications due to the many advantages such as improvement in drug bioavailability, ability to cross barriers after oral and parentral administration, and being an excellent drug carrier for insoluble drugs. However, size and morphological characteristics of nanoparticles are critical for drug release in the body, warranting understanding the parameters controlling the above characteristics. This paper describes, firstly, preparation parameters to optimize the size of polylactic-co-glycolic acid (PLGA)-based nanoparticles, and secondly, study the morphology of the same nanoparticles, formed by the emulsion solvent evaporation technique. The solvent evaporation technique involves an aqueous phase containing polyvinyl alcohol (PVA) as a stabilizing agent. After washing, the samples were freeze-dried and analyzed using particle size analyzer and scanning electron microscope. The preparation parameters studied included; homogenizing speed, homogenizing time, stabilizer concentration and temperature.","PeriodicalId":6447,"journal":{"name":"2009 IEEE Symposium on Industrial Electronics & Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81918384","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 : 2009-12-18DOI: 10.1109/ISIEA.2009.5356342
U. Frober, S.V. Lehmann, R. Wurfel, J. Mampel, M. Stubenrauch, H. Witte
The progress in regenerative medicine in combination with the trend towards miniaturization leads to an increased usage of bio-microsystems for cell culturing. Similar processes can be found in the field of biomaterial research. New scaffold materials and scaffold fabrication technologies give a possibility to create biocompatible biodegradable 3-dimensional artificial extra cellular matrices to improve implant materials designed by tissue engineering. For small and delicate technical and biological structures (hydrogels for scaffolds, cells) a high resolution and precise manipulation system is needed. A semi-open BioMEMS structure offers access to cultivated cells and to the scaffold structures. The bio-microsystem consists of a structured silicon substrate bonded to a glass cover with orifices. Polymer tube adapters, directly bonded to the silicon via nanostructured surfaces, connect it to a perfusion system for the long term cultivation of mammalian or human chondrocytes or fibroblasts. Externally fabricated scaffolds are integrated into the cultivation chambers. In this paper we present a piezo driven micromanipulator with automated control. Several tools such as grippers and needles can be fixed on the manipulators. The manipulation unit is completed by an observation unit to monitor the processes. Image processing software provides parameters for the control algorithm by detecting the position of the manipulation devices. So, a positioning of the tools is achieved in 2D inside the cultivation chamber of the microsystem. It is possible to influence technical and biological structures by deliberate mechanical manipulation.
{"title":"Automated control of micromanipulators - A tool for BioMEMS based cell culture","authors":"U. Frober, S.V. Lehmann, R. Wurfel, J. Mampel, M. Stubenrauch, H. Witte","doi":"10.1109/ISIEA.2009.5356342","DOIUrl":"https://doi.org/10.1109/ISIEA.2009.5356342","url":null,"abstract":"The progress in regenerative medicine in combination with the trend towards miniaturization leads to an increased usage of bio-microsystems for cell culturing. Similar processes can be found in the field of biomaterial research. New scaffold materials and scaffold fabrication technologies give a possibility to create biocompatible biodegradable 3-dimensional artificial extra cellular matrices to improve implant materials designed by tissue engineering. For small and delicate technical and biological structures (hydrogels for scaffolds, cells) a high resolution and precise manipulation system is needed. A semi-open BioMEMS structure offers access to cultivated cells and to the scaffold structures. The bio-microsystem consists of a structured silicon substrate bonded to a glass cover with orifices. Polymer tube adapters, directly bonded to the silicon via nanostructured surfaces, connect it to a perfusion system for the long term cultivation of mammalian or human chondrocytes or fibroblasts. Externally fabricated scaffolds are integrated into the cultivation chambers. In this paper we present a piezo driven micromanipulator with automated control. Several tools such as grippers and needles can be fixed on the manipulators. The manipulation unit is completed by an observation unit to monitor the processes. Image processing software provides parameters for the control algorithm by detecting the position of the manipulation devices. So, a positioning of the tools is achieved in 2D inside the cultivation chamber of the microsystem. It is possible to influence technical and biological structures by deliberate mechanical manipulation.","PeriodicalId":6447,"journal":{"name":"2009 IEEE Symposium on Industrial Electronics & Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81409094","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 : 2009-12-18DOI: 10.1109/ISIEA.2009.5356387
K. Pillay, Mutasim Nour, K. H. Yang, D. N. D. Harun, L. K. Haw
Induction motor is the workhouse of industry and particular attention is required to monitor and control it. An induction motor draws a high starting current and develops a high torque during start-up. The high starting current often causes problem such as voltage dips which will be penalized by the energy companies. Various motor starters were introduced to overcome this problem. The different motors starters available in Malaysian market are discussed and analyzed in this paper; these include both conventional electromechanical starters and power electronic drives. The advantages, disadvantages and energy saving features of each type of starter mentioned will also be discussed. An analysis of the industrial applications and the demand of these starters in Malaysia are also made and to finally conclude, this paper will also provide a suggestion of which starter is most suitable for an application based on the stated constraints.
{"title":"Assessment and comparison of conventional motor starters and modern power electronic drives for induction motor starting characteristics","authors":"K. Pillay, Mutasim Nour, K. H. Yang, D. N. D. Harun, L. K. Haw","doi":"10.1109/ISIEA.2009.5356387","DOIUrl":"https://doi.org/10.1109/ISIEA.2009.5356387","url":null,"abstract":"Induction motor is the workhouse of industry and particular attention is required to monitor and control it. An induction motor draws a high starting current and develops a high torque during start-up. The high starting current often causes problem such as voltage dips which will be penalized by the energy companies. Various motor starters were introduced to overcome this problem. The different motors starters available in Malaysian market are discussed and analyzed in this paper; these include both conventional electromechanical starters and power electronic drives. The advantages, disadvantages and energy saving features of each type of starter mentioned will also be discussed. An analysis of the industrial applications and the demand of these starters in Malaysia are also made and to finally conclude, this paper will also provide a suggestion of which starter is most suitable for an application based on the stated constraints.","PeriodicalId":6447,"journal":{"name":"2009 IEEE Symposium on Industrial Electronics & Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89130183","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 : 2009-12-18DOI: 10.1109/ISIEA.2009.5356344
Maher Faeq, D. Ishak
High performance sensorless permanent magnet brushless DC motor operation requires proper and precise commutation sequence. In general, the average torque falls rapidly as the rotor speed increases above the base speed, hence the motor will frequently be found to have insufficient torque at higher speed. One way to counter this problem is by using third harmonic back-emf detection technique during high speed operation because the third harmonic is usually kept a constant relationship with rotor position for any motor speeds and load conditions. Therefore, we could potentially avoid the torque deterioration which commonly occurs in traditional sensorless technique due to the delay of the phase angle between current and back-emf. Furthermore this method is practically free of noise which may be introduced from inverter switches. In this work, we propose a new software scheme of phase-locked loop (PLL) of third harmonic back-emf detection in order to accomplish a precise switching strategy for improving torque produced during high speed operation.
{"title":"Anew scheme sensorless control of BLDC motor using software PLL and third harmonic back-emf","authors":"Maher Faeq, D. Ishak","doi":"10.1109/ISIEA.2009.5356344","DOIUrl":"https://doi.org/10.1109/ISIEA.2009.5356344","url":null,"abstract":"High performance sensorless permanent magnet brushless DC motor operation requires proper and precise commutation sequence. In general, the average torque falls rapidly as the rotor speed increases above the base speed, hence the motor will frequently be found to have insufficient torque at higher speed. One way to counter this problem is by using third harmonic back-emf detection technique during high speed operation because the third harmonic is usually kept a constant relationship with rotor position for any motor speeds and load conditions. Therefore, we could potentially avoid the torque deterioration which commonly occurs in traditional sensorless technique due to the delay of the phase angle between current and back-emf. Furthermore this method is practically free of noise which may be introduced from inverter switches. In this work, we propose a new software scheme of phase-locked loop (PLL) of third harmonic back-emf detection in order to accomplish a precise switching strategy for improving torque produced during high speed operation.","PeriodicalId":6447,"journal":{"name":"2009 IEEE Symposium on Industrial Electronics & Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89096850","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 : 2009-12-18DOI: 10.1109/ISIEA.2009.5356341
Y. Singh, Phalguni Gupta
This paper presents a new delineation approach of electrocardiographic P waves. The approach works directly on the digitized ECG. It computes the time derivative of the signal and detects the features of P wave using adaptive thresholding approach that overcome from the impact of high frequency noise present in the signal. Performance of the proposed P wave delineator is evaluated on Physionet QT database, which shows the detection sensitivity to 99.5% and positive predictivity to 99.89%. Lower values of mean error and standard deviation for onset and offset of P wave fiducials are obtained to 5.18±8.1 and 4.4±6.29, where units are in ms. These delineation results are outperformed in comparison to other methods on standard database.
{"title":"A robust delineation approach of electrocardiographic P waves","authors":"Y. Singh, Phalguni Gupta","doi":"10.1109/ISIEA.2009.5356341","DOIUrl":"https://doi.org/10.1109/ISIEA.2009.5356341","url":null,"abstract":"This paper presents a new delineation approach of electrocardiographic P waves. The approach works directly on the digitized ECG. It computes the time derivative of the signal and detects the features of P wave using adaptive thresholding approach that overcome from the impact of high frequency noise present in the signal. Performance of the proposed P wave delineator is evaluated on Physionet QT database, which shows the detection sensitivity to 99.5% and positive predictivity to 99.89%. Lower values of mean error and standard deviation for onset and offset of P wave fiducials are obtained to 5.18±8.1 and 4.4±6.29, where units are in ms. These delineation results are outperformed in comparison to other methods on standard database.","PeriodicalId":6447,"journal":{"name":"2009 IEEE Symposium on Industrial Electronics & Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85697180","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 : 2009-12-18DOI: 10.1109/ISIEA.2009.5356338
Hussnain Ali, T. J. Ahmad, S. Khan
Design of an optimized RF transcutaneous link through inductive coils is an arduous design process which involves complex mathematical modeling to search for optimized design parameters. This paper presents a generalized model which encompasses all possible voltage driven circuit realizations of an inductive link and presents a comparison on the bases of link efficiency and voltage gain. Mathematical expressions for the generalized voltage driven model as well as for the equivalent circuit topologies are derived. Moreover effect of different parameters such as resonating impedances on the final relationships is exhaustively analyzed. Optimization is a critical aspect in designing inductive links for medical implants since the link virtually acts as an air-core transformer with relatively low mutual coupling. Therefore, in order to maximize the gain and improve the link efficiency it is very necessary to design the link on optimized parameters. Aim of the analysis is to facilitate the designers in their design process as mathematical relationships for different models and their comparison has never been reported earlier in literature.
{"title":"Mathematical modeling of an inductive link for optimizing efficiency","authors":"Hussnain Ali, T. J. Ahmad, S. Khan","doi":"10.1109/ISIEA.2009.5356338","DOIUrl":"https://doi.org/10.1109/ISIEA.2009.5356338","url":null,"abstract":"Design of an optimized RF transcutaneous link through inductive coils is an arduous design process which involves complex mathematical modeling to search for optimized design parameters. This paper presents a generalized model which encompasses all possible voltage driven circuit realizations of an inductive link and presents a comparison on the bases of link efficiency and voltage gain. Mathematical expressions for the generalized voltage driven model as well as for the equivalent circuit topologies are derived. Moreover effect of different parameters such as resonating impedances on the final relationships is exhaustively analyzed. Optimization is a critical aspect in designing inductive links for medical implants since the link virtually acts as an air-core transformer with relatively low mutual coupling. Therefore, in order to maximize the gain and improve the link efficiency it is very necessary to design the link on optimized parameters. Aim of the analysis is to facilitate the designers in their design process as mathematical relationships for different models and their comparison has never been reported earlier in literature.","PeriodicalId":6447,"journal":{"name":"2009 IEEE Symposium on Industrial Electronics & Applications","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83645761","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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