Pub Date : 2011-10-10DOI: 10.1109/ICIINFS.2011.6038051
S. Rathkanthiwar, C. Dethe, P. Dakhole, K. Kulat
This paper presents a new adaptive neural approach to improve the system performance of an Orthogonal Frequency Division Multiplexing (OFDM) based receiver structure. Peak to average power ratio (PAPR) of an OFDM signal is very large. When such a signal passes through high power amplifier, the signal gets nonlinearly distorted. This causes bit error rate (BER) degradation of the OFDM system and also results in spectral regrowth. Multipath fading effects also deteriorate the signal to high extent. Our proposed system takes care of both these factors and thus improves overall performance of the system.
{"title":"Parameterless self organizing map for improving OFDM system performance","authors":"S. Rathkanthiwar, C. Dethe, P. Dakhole, K. Kulat","doi":"10.1109/ICIINFS.2011.6038051","DOIUrl":"https://doi.org/10.1109/ICIINFS.2011.6038051","url":null,"abstract":"This paper presents a new adaptive neural approach to improve the system performance of an Orthogonal Frequency Division Multiplexing (OFDM) based receiver structure. Peak to average power ratio (PAPR) of an OFDM signal is very large. When such a signal passes through high power amplifier, the signal gets nonlinearly distorted. This causes bit error rate (BER) degradation of the OFDM system and also results in spectral regrowth. Multipath fading effects also deteriorate the signal to high extent. Our proposed system takes care of both these factors and thus improves overall performance of the system.","PeriodicalId":353966,"journal":{"name":"2011 6th International Conference on Industrial and Information Systems","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131214620","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 : 2011-10-10DOI: 10.1109/ICIINFS.2011.6038093
H. Jayawardana, H. Amarasekara, P. T. S. Peelikumbura, W. A. K. C. Jayathilaka, S. G. Abeyaratne, S. Dewasurendra
This paper presents a simple and clear method to design and implement a reconfigurable elevator controller using an FPGA, which can be implemented for an elevator with any (N) number of floors, with specified inputs and outputs. A model based design approach was followed. We started from a state chart model developed for a prototype elevator with three floors. Extension of the model for a variable number of floors was considered. Controller for the prototype system was implemented in ladder logic on a PLC and the limitations of that approach with regard to re-configurability were identified: viz., in the extension of elevator controller for ‘N’ no of floors. Next VHDL code was developed for a reconfigurable elevator controller where, by changing a variable corresponding to the required number of floors, the suitable code can be generated. The controller thus generated can be implemented in an FPGA. The method was successfully tested on a Xilinx Spartan 3AN FPGA.
{"title":"Design and implementation of a statechart based reconfigurable elevator controller","authors":"H. Jayawardana, H. Amarasekara, P. T. S. Peelikumbura, W. A. K. C. Jayathilaka, S. G. Abeyaratne, S. Dewasurendra","doi":"10.1109/ICIINFS.2011.6038093","DOIUrl":"https://doi.org/10.1109/ICIINFS.2011.6038093","url":null,"abstract":"This paper presents a simple and clear method to design and implement a reconfigurable elevator controller using an FPGA, which can be implemented for an elevator with any (N) number of floors, with specified inputs and outputs. A model based design approach was followed. We started from a state chart model developed for a prototype elevator with three floors. Extension of the model for a variable number of floors was considered. Controller for the prototype system was implemented in ladder logic on a PLC and the limitations of that approach with regard to re-configurability were identified: viz., in the extension of elevator controller for ‘N’ no of floors. Next VHDL code was developed for a reconfigurable elevator controller where, by changing a variable corresponding to the required number of floors, the suitable code can be generated. The controller thus generated can be implemented in an FPGA. The method was successfully tested on a Xilinx Spartan 3AN FPGA.","PeriodicalId":353966,"journal":{"name":"2011 6th International Conference on Industrial and Information Systems","volume":"109 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133280156","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 : 2011-10-10DOI: 10.1109/ICIINFS.2011.6038112
Kosala S. Senevirathna, L. Samaranayake
IPv6 is the next generation Internet Protocol. After a decade of deployment and platform integration, it stands ready to revolutionize the internet, networking, and the telecommunications industry. With the increasing number of networks, router performance needs to be upgrade with time. However with the present global routing table about 3k many routers face difficulties of handling the routing table. Ipv6 networks also blooming the internet gradually, which is a must to cater the IPv4 depreciating issue? Routing table handling issue may be huge with the IPv6 because the huge address space will cause for many routes. Multi-homing becomes the key issue with such implementation in future. Proper mechanism need to be followed to safeguard routing tables as well as networks.
{"title":"IPv6 multi-homing with structured CIDR","authors":"Kosala S. Senevirathna, L. Samaranayake","doi":"10.1109/ICIINFS.2011.6038112","DOIUrl":"https://doi.org/10.1109/ICIINFS.2011.6038112","url":null,"abstract":"IPv6 is the next generation Internet Protocol. After a decade of deployment and platform integration, it stands ready to revolutionize the internet, networking, and the telecommunications industry. With the increasing number of networks, router performance needs to be upgrade with time. However with the present global routing table about 3k many routers face difficulties of handling the routing table. Ipv6 networks also blooming the internet gradually, which is a must to cater the IPv4 depreciating issue? Routing table handling issue may be huge with the IPv6 because the huge address space will cause for many routes. Multi-homing becomes the key issue with such implementation in future. Proper mechanism need to be followed to safeguard routing tables as well as networks.","PeriodicalId":353966,"journal":{"name":"2011 6th International Conference on Industrial and Information Systems","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133121986","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 : 2011-10-10DOI: 10.1109/ICIINFS.2011.6038050
D. Hinduja, Gayathri, C. S. Kalpage, M. Fernando
This paper presents laboratory investigation of treated coconut oil as alternative to liquid insulation of power transformers. Thirteen different virgin and treated coconut oil samples consisting three different brands were used for the investigation. Frequency Dielectric Spectroscopy measurements were conducted on the samples at room temperature and at high temperature of 65°C. The conductivity, loss tangent, permittivity and the activation energy were calculated and used for the analysis. It was found that the conductivity improved slightly with heat treatment and neutralization process. However, during one week ageing, the conductivity improved significantly. It suggested that with proper treatment, coconut oil can be used as alternative transformer liquid insulation.
{"title":"Laboratory investigation of treated coconut oil as transformer liquid insulation","authors":"D. Hinduja, Gayathri, C. S. Kalpage, M. Fernando","doi":"10.1109/ICIINFS.2011.6038050","DOIUrl":"https://doi.org/10.1109/ICIINFS.2011.6038050","url":null,"abstract":"This paper presents laboratory investigation of treated coconut oil as alternative to liquid insulation of power transformers. Thirteen different virgin and treated coconut oil samples consisting three different brands were used for the investigation. Frequency Dielectric Spectroscopy measurements were conducted on the samples at room temperature and at high temperature of 65°C. The conductivity, loss tangent, permittivity and the activation energy were calculated and used for the analysis. It was found that the conductivity improved slightly with heat treatment and neutralization process. However, during one week ageing, the conductivity improved significantly. It suggested that with proper treatment, coconut oil can be used as alternative transformer liquid insulation.","PeriodicalId":353966,"journal":{"name":"2011 6th International Conference on Industrial and Information Systems","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114727436","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 : 2011-10-10DOI: 10.1109/ICIINFS.2011.6038095
S. Nallaperuma, A. Karunananda
Various attempts have been made throughout the history of artificial intelligence (AI) to incorporate emotional support in intelligent systems. Still some paths are left untraveled. This paper presents an attempt to model emotions as a complex system based on the hypothesis that mind state can be considered as an emergent phenomena resulting from autonomous, interactive, elementary entities called emotions. Inspiration for our approach is found in Buddhist philosophical concepts about thought formation by combination of emotions. Multi Agent Systems (MAS) technology has been used for the realization of above emotional model because interactions and emergence are intrinsic features of MAS. Capabilities of the model are exposed through a virtual agent application called EME who perceives, understands, uses and expresses emotions. Evaluation of the agent implementation has shown good results in achieving emotional intelligence with enhanced quality.
{"title":"Towards an emergent model of emotions","authors":"S. Nallaperuma, A. Karunananda","doi":"10.1109/ICIINFS.2011.6038095","DOIUrl":"https://doi.org/10.1109/ICIINFS.2011.6038095","url":null,"abstract":"Various attempts have been made throughout the history of artificial intelligence (AI) to incorporate emotional support in intelligent systems. Still some paths are left untraveled. This paper presents an attempt to model emotions as a complex system based on the hypothesis that mind state can be considered as an emergent phenomena resulting from autonomous, interactive, elementary entities called emotions. Inspiration for our approach is found in Buddhist philosophical concepts about thought formation by combination of emotions. Multi Agent Systems (MAS) technology has been used for the realization of above emotional model because interactions and emergence are intrinsic features of MAS. Capabilities of the model are exposed through a virtual agent application called EME who perceives, understands, uses and expresses emotions. Evaluation of the agent implementation has shown good results in achieving emotional intelligence with enhanced quality.","PeriodicalId":353966,"journal":{"name":"2011 6th International Conference on Industrial and Information Systems","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116488517","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 : 2011-10-10DOI: 10.1109/ICIINFS.2011.6038078
R. Karthigaivel, N. Kumaresan, M. Subbiah
A method employing Genetic Algorithm (GA) has been applied for the analysis of three-phase self-excited induction generators supplying battery charging load through single-phase semi-converters. The battery circuit is represented as equivalent resistance and reactance in the equivalent circuit of the generators and such equivalent values are functions of the dc charging voltage, current and control angle set in the converter. Apart from the conventional Phase Angle Control, other firing control schemes namely Extinction Angle Control and Symmetrical Angle Control have been considered for the operation of the converter. The suitability of each of these control schemes for specific load conditions is discussed with examples. Experimental results obtained on a three-phase SEIG charging suitable batteries through a single-phase IGBT based semi-converter, controlled with all these schemes, confirm the usefulness of the proposed system and the validity of its analysis.
{"title":"Analysis and control of three-phase SEIGs supplying battery charging loads through single-phase converters","authors":"R. Karthigaivel, N. Kumaresan, M. Subbiah","doi":"10.1109/ICIINFS.2011.6038078","DOIUrl":"https://doi.org/10.1109/ICIINFS.2011.6038078","url":null,"abstract":"A method employing Genetic Algorithm (GA) has been applied for the analysis of three-phase self-excited induction generators supplying battery charging load through single-phase semi-converters. The battery circuit is represented as equivalent resistance and reactance in the equivalent circuit of the generators and such equivalent values are functions of the dc charging voltage, current and control angle set in the converter. Apart from the conventional Phase Angle Control, other firing control schemes namely Extinction Angle Control and Symmetrical Angle Control have been considered for the operation of the converter. The suitability of each of these control schemes for specific load conditions is discussed with examples. Experimental results obtained on a three-phase SEIG charging suitable batteries through a single-phase IGBT based semi-converter, controlled with all these schemes, confirm the usefulness of the proposed system and the validity of its analysis.","PeriodicalId":353966,"journal":{"name":"2011 6th International Conference on Industrial and Information Systems","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116494096","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 : 2011-10-10DOI: 10.1109/ICIINFS.2011.6038052
Inosha Sugathapala, N. Rajatheva
In this paper, we introduce a novel capacity and power optimization algorithm with geographic based channel allocation scheme to an orthogonal frequency division multiple access (OFDMA) based femtocell network. The proposed channel allocation scheme mainly reduces the interference between femto/macro cells. Moreover, optimal channels are allocated to users such that they communicate through the channels which have maximum normalized channel gain for them. Further, here we cooperatively optimize macrocell and femtocell uplink rate and power for each user since most of the work up to now considers resources in one scheme. Thus a joint approach is more reliable. As an optimization algorithm, non-cooperative game theory approach is introduced. Further, the objective function is defined as a capacity maximization with pricing as a monotonically increasing function with user power. Thus this algorithm optimizes both power and rate for all the users in the system.
{"title":"Game theory based capacity and power optimization in OFDMA femtocell networks","authors":"Inosha Sugathapala, N. Rajatheva","doi":"10.1109/ICIINFS.2011.6038052","DOIUrl":"https://doi.org/10.1109/ICIINFS.2011.6038052","url":null,"abstract":"In this paper, we introduce a novel capacity and power optimization algorithm with geographic based channel allocation scheme to an orthogonal frequency division multiple access (OFDMA) based femtocell network. The proposed channel allocation scheme mainly reduces the interference between femto/macro cells. Moreover, optimal channels are allocated to users such that they communicate through the channels which have maximum normalized channel gain for them. Further, here we cooperatively optimize macrocell and femtocell uplink rate and power for each user since most of the work up to now considers resources in one scheme. Thus a joint approach is more reliable. As an optimization algorithm, non-cooperative game theory approach is introduced. Further, the objective function is defined as a capacity maximization with pricing as a monotonically increasing function with user power. Thus this algorithm optimizes both power and rate for all the users in the system.","PeriodicalId":353966,"journal":{"name":"2011 6th International Conference on Industrial and Information Systems","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125780346","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 : 2011-10-10DOI: 10.1109/ICIINFS.2011.6038130
P. Binduhewa
This paper presents an uninterruptible power supply capable of proving power for several seconds. Ultracapacitors are used as the storage method since they are suitable for pulse power applications and longer life time. Selection of ultracapacitors and controller design for associated power electronic converters are presented in this paper. Further simulation results of the proposed uninterruptible power supply are also included in the paper.
{"title":"Uninterruptible power supply for short-time power back-up using ultracapacitors","authors":"P. Binduhewa","doi":"10.1109/ICIINFS.2011.6038130","DOIUrl":"https://doi.org/10.1109/ICIINFS.2011.6038130","url":null,"abstract":"This paper presents an uninterruptible power supply capable of proving power for several seconds. Ultracapacitors are used as the storage method since they are suitable for pulse power applications and longer life time. Selection of ultracapacitors and controller design for associated power electronic converters are presented in this paper. Further simulation results of the proposed uninterruptible power supply are also included in the paper.","PeriodicalId":353966,"journal":{"name":"2011 6th International Conference on Industrial and Information Systems","volume":"132 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123722160","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 : 2011-10-10DOI: 10.1109/ICIINFS.2011.6038111
Tania Fernando, P. Haddela
The increase in the use of handheld devices such as technologically enhanced mobile phones (smart phones), Personal Digital Assistance (PDA), palmtops, and very high end digital cameras, has brought in a new set of performance issues while accessing large volumes of datasets. Although much research work focuses towards the novel applications there is less concern about the performance of the device. During the last decade the rapid development of technologies has leveraged the power of storage and access capabilities. Therefore, it is significant to analyze the I/O performances of different storage devices utilized for mobile devices. A crucial factor in this connection is consideration towards the performance of algorithms for data access latency. To minimize data access time, it is significant to consider data access pattern, and the specific native characteristics of the storage media. This paper contributes towards identifying the specific characteristics over different Storage Media.
{"title":"I/O performance of mobile devices over different storage media and block sizes","authors":"Tania Fernando, P. Haddela","doi":"10.1109/ICIINFS.2011.6038111","DOIUrl":"https://doi.org/10.1109/ICIINFS.2011.6038111","url":null,"abstract":"The increase in the use of handheld devices such as technologically enhanced mobile phones (smart phones), Personal Digital Assistance (PDA), palmtops, and very high end digital cameras, has brought in a new set of performance issues while accessing large volumes of datasets. Although much research work focuses towards the novel applications there is less concern about the performance of the device. During the last decade the rapid development of technologies has leveraged the power of storage and access capabilities. Therefore, it is significant to analyze the I/O performances of different storage devices utilized for mobile devices. A crucial factor in this connection is consideration towards the performance of algorithms for data access latency. To minimize data access time, it is significant to consider data access pattern, and the specific native characteristics of the storage media. This paper contributes towards identifying the specific characteristics over different Storage Media.","PeriodicalId":353966,"journal":{"name":"2011 6th International Conference on Industrial and Information Systems","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132325715","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 : 2011-10-10DOI: 10.1109/ICIINFS.2011.6038118
Samarathunga L. M. D. Rangajeeva, J. Whidborne
This paper describes a Linear Parameter Varying (LPV) controller design for a quadrotor vehicle. The controller synthesis requires the LPV plant model which is obtained by linearisation of the modelling equations, to be in an affine form. However, the LPV representation of the quadrotor dynamic is not affine; hence it has been transformed into to a convex polytopic form using Tensor Product (TP) transformation. The H∞ self gain scheduling control method has been applied to obtain a LPV controller which is tested on a simplified nonlinear model of the quadrotor. The LPV controller performance was compared with a separate H∞ controller. The LPV controller exhibited significant close tracking capabilities with respect to the H∞ controller.
{"title":"Linear Parameter Varying control of a quadrotor","authors":"Samarathunga L. M. D. Rangajeeva, J. Whidborne","doi":"10.1109/ICIINFS.2011.6038118","DOIUrl":"https://doi.org/10.1109/ICIINFS.2011.6038118","url":null,"abstract":"This paper describes a Linear Parameter Varying (LPV) controller design for a quadrotor vehicle. The controller synthesis requires the LPV plant model which is obtained by linearisation of the modelling equations, to be in an affine form. However, the LPV representation of the quadrotor dynamic is not affine; hence it has been transformed into to a convex polytopic form using Tensor Product (TP) transformation. The H∞ self gain scheduling control method has been applied to obtain a LPV controller which is tested on a simplified nonlinear model of the quadrotor. The LPV controller performance was compared with a separate H∞ controller. The LPV controller exhibited significant close tracking capabilities with respect to the H∞ controller.","PeriodicalId":353966,"journal":{"name":"2011 6th International Conference on Industrial and Information Systems","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126931141","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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