Pub Date : 2010-10-07DOI: 10.1109/ICMET.2010.5598444
D. Susan, S. Jayalalitha
This paper deals with simulation of passive component the inductor and the application of the simulated inductor in analog filters. The analog filters use active component the operational Amplifiers, resistors and the simulated inductor. The design of various analog filters is based on the basic LCR resonator circuits. Various types of filters are realized and the frequency response are obtained using the analog simulator PSPICE
{"title":"Analog filters using simulated inductor","authors":"D. Susan, S. Jayalalitha","doi":"10.1109/ICMET.2010.5598444","DOIUrl":"https://doi.org/10.1109/ICMET.2010.5598444","url":null,"abstract":"This paper deals with simulation of passive component the inductor and the application of the simulated inductor in analog filters. The analog filters use active component the operational Amplifiers, resistors and the simulated inductor. The design of various analog filters is based on the basic LCR resonator circuits. Various types of filters are realized and the frequency response are obtained using the analog simulator PSPICE","PeriodicalId":415118,"journal":{"name":"2010 International Conference on Mechanical and Electrical Technology","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130108112","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 : 2010-10-07DOI: 10.1109/ICMET.2010.5598412
A. Hussein, Salam Hadi Hussain
Laminar natural convection in a two-dimensional inclined square enclosure has been numerically studied using finite volume method. The research deals with the investigation of the effect of Prandtl number and inclination angle on the stream contours and isotherms in this enclosure where the left side wall is maintained at isothermal hot temperature, while the opposite side wall is maintained at isothermal cold temperature. The other top and bottom walls are considered thermally insulated. The enclosure in the present work is based on the geometry of Tofiqul Islam et al. [9], (2007) which is considered inclined with inclination angles ranging from 0° to 30° and filled with water as a working fluid where its Prandtl number is taken as 6. All the numerical calculations are performed at the external Rayleigh numbers 103 and 106 while the internal Rayleigh numbers ranging from 105 to 108. The results are presented as a streamline and isotherm plots as well as the variation of the average Nusselt numbers at the hot wall are also presented. The results show a good confidence with other published results.
{"title":"Numerical analysis of steady natural convection of water in inclined square enclosure with internal heat generation","authors":"A. Hussein, Salam Hadi Hussain","doi":"10.1109/ICMET.2010.5598412","DOIUrl":"https://doi.org/10.1109/ICMET.2010.5598412","url":null,"abstract":"Laminar natural convection in a two-dimensional inclined square enclosure has been numerically studied using finite volume method. The research deals with the investigation of the effect of Prandtl number and inclination angle on the stream contours and isotherms in this enclosure where the left side wall is maintained at isothermal hot temperature, while the opposite side wall is maintained at isothermal cold temperature. The other top and bottom walls are considered thermally insulated. The enclosure in the present work is based on the geometry of Tofiqul Islam et al. [9], (2007) which is considered inclined with inclination angles ranging from 0° to 30° and filled with water as a working fluid where its Prandtl number is taken as 6. All the numerical calculations are performed at the external Rayleigh numbers 103 and 106 while the internal Rayleigh numbers ranging from 105 to 108. The results are presented as a streamline and isotherm plots as well as the variation of the average Nusselt numbers at the hot wall are also presented. The results show a good confidence with other published results.","PeriodicalId":415118,"journal":{"name":"2010 International Conference on Mechanical and Electrical Technology","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115742734","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 : 2010-10-07DOI: 10.1109/ICMET.2010.5598459
Aniruddha Ghosh, S. Chattopadhyaya
Studies on temperature distribution during welding are very important because this may pave the way for application of microstructure modeling, thermal stress analysis, residual stress/distribution1 and welding process simulation. An attempt has been made in this paper to predict of temperature variation of entire plates during welding and after welding through an analytical solution is derived from the transient multi dimensional heat conduction of infinite plate to finite thickness. The heat input that is applied on the plate is exactly same amount of heat lost for electric arc is assumed to be a moving double central conicoidal heat source with Gaussian distribution for Submerged Arc Welding process. The prediction was compared with experimental results with generally good agreement.
{"title":"Analytical solution for transient temperature distribution of semi -infinite body subjected to 3-D moving heat source of submerged Arc Welding process","authors":"Aniruddha Ghosh, S. Chattopadhyaya","doi":"10.1109/ICMET.2010.5598459","DOIUrl":"https://doi.org/10.1109/ICMET.2010.5598459","url":null,"abstract":"Studies on temperature distribution during welding are very important because this may pave the way for application of microstructure modeling, thermal stress analysis, residual stress/distribution1 and welding process simulation. An attempt has been made in this paper to predict of temperature variation of entire plates during welding and after welding through an analytical solution is derived from the transient multi dimensional heat conduction of infinite plate to finite thickness. The heat input that is applied on the plate is exactly same amount of heat lost for electric arc is assumed to be a moving double central conicoidal heat source with Gaussian distribution for Submerged Arc Welding process. The prediction was compared with experimental results with generally good agreement.","PeriodicalId":415118,"journal":{"name":"2010 International Conference on Mechanical and Electrical Technology","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126671045","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 : 2010-10-07DOI: 10.1109/ICMET.2010.5598355
S. Khalilarya, M. Mohammadpour, I. Mirzaee, D. J. Vahid
This paper presents a modified numerical model for Elastohydrodynamic lubrication (EHL) calculations of involute spur gears. This model considers the fluid as a Newtonian fluid. The main study performs on gear EHL properties along path of contact (POC). Using this study, the minimum film thickness and maximum pressure value as well complete film geometry and pressure distribution could be obtained for various applicable purposes. This study also uses a full numerical model for both gear load calculations and EHL calculations instead of experimental, approximation or analytical-experimental equations. Numerical method lets the model to calculate all required data without any limitations about the validity rang of experimental and analytical-experimental equations. In order to explain the process completely, paper firstly reviews a mathematical model to calculate the load distribution, single contact stiffness and meshing stiffness, transmission error and path of contact under load without using finite element method and in shortest time. Then a numerical method presented to solve the mathematical model using a double iteration flowchart to close the problem. This model is flexible to adapt for any modification in spur gear profile geometry. In addition to the gear load model, a modified and accelerated EHL numerical method reviewed to be utilized in this paper. The model for load distribution presents a realistic calculation for current study and modified EHL model helps to do calculations more exactly in shortest time. Finally the results of full model (that utilizes the two old models) will discuss and compared with previous methods.
{"title":"A numerical model to calculate Elastohydrodynamic (EHL) properties in involute spur gears","authors":"S. Khalilarya, M. Mohammadpour, I. Mirzaee, D. J. Vahid","doi":"10.1109/ICMET.2010.5598355","DOIUrl":"https://doi.org/10.1109/ICMET.2010.5598355","url":null,"abstract":"This paper presents a modified numerical model for Elastohydrodynamic lubrication (EHL) calculations of involute spur gears. This model considers the fluid as a Newtonian fluid. The main study performs on gear EHL properties along path of contact (POC). Using this study, the minimum film thickness and maximum pressure value as well complete film geometry and pressure distribution could be obtained for various applicable purposes. This study also uses a full numerical model for both gear load calculations and EHL calculations instead of experimental, approximation or analytical-experimental equations. Numerical method lets the model to calculate all required data without any limitations about the validity rang of experimental and analytical-experimental equations. In order to explain the process completely, paper firstly reviews a mathematical model to calculate the load distribution, single contact stiffness and meshing stiffness, transmission error and path of contact under load without using finite element method and in shortest time. Then a numerical method presented to solve the mathematical model using a double iteration flowchart to close the problem. This model is flexible to adapt for any modification in spur gear profile geometry. In addition to the gear load model, a modified and accelerated EHL numerical method reviewed to be utilized in this paper. The model for load distribution presents a realistic calculation for current study and modified EHL model helps to do calculations more exactly in shortest time. Finally the results of full model (that utilizes the two old models) will discuss and compared with previous methods.","PeriodicalId":415118,"journal":{"name":"2010 International Conference on Mechanical and Electrical Technology","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125489818","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 : 2010-10-07DOI: 10.1109/ICMET.2010.5598496
A. Kuusik, E. Reilent, I. Lõõbas, M. Parve
Modern home telehealth care systems should support personalized data processing and environment monitoring for context awareness. Semantic rule based approach has been proposed by many authors to overcome problems coming from large amounts of location and patient-specific, typically inconsistent monitoring data. However, existing solutions just present proof of concept and do not address implementation feasibility and practical issues of eHealth system compatibility. We describe a telehealth care solution employing Prolog programs based on defeasible rule-based reasoning and SNOMED medical terminology system deployed in home digital TV receivers.
{"title":"Semantic formal reasoning solution for personalized home telecare","authors":"A. Kuusik, E. Reilent, I. Lõõbas, M. Parve","doi":"10.1109/ICMET.2010.5598496","DOIUrl":"https://doi.org/10.1109/ICMET.2010.5598496","url":null,"abstract":"Modern home telehealth care systems should support personalized data processing and environment monitoring for context awareness. Semantic rule based approach has been proposed by many authors to overcome problems coming from large amounts of location and patient-specific, typically inconsistent monitoring data. However, existing solutions just present proof of concept and do not address implementation feasibility and practical issues of eHealth system compatibility. We describe a telehealth care solution employing Prolog programs based on defeasible rule-based reasoning and SNOMED medical terminology system deployed in home digital TV receivers.","PeriodicalId":415118,"journal":{"name":"2010 International Conference on Mechanical and Electrical Technology","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129042250","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 : 2010-10-07DOI: 10.1109/ICMET.2010.5598356
Yao Xing-jia, Liu Zhong-liang, Cui Guo-sheng
In this paper, first a theoretical analysis for wind turbine and Double-Fed Induction Generator (DFIG) is processed, given the mathematical models of them. Aiming at the problems of the conventional PI controller, a Fuzzy-PI control strategy is presented. A comparison between the developed vector controller with the proposed Fuzzy-PI strategy and the same vector controller with a conventional PI strategy employing fixed gains has been done. The simulation results also show that using the proposed controller, the dynamic response of the system can be improved and more precise control is achieved.
{"title":"Decoupling control of Doubly-Fed Induction Generator based on Fuzzy-PI controller","authors":"Yao Xing-jia, Liu Zhong-liang, Cui Guo-sheng","doi":"10.1109/ICMET.2010.5598356","DOIUrl":"https://doi.org/10.1109/ICMET.2010.5598356","url":null,"abstract":"In this paper, first a theoretical analysis for wind turbine and Double-Fed Induction Generator (DFIG) is processed, given the mathematical models of them. Aiming at the problems of the conventional PI controller, a Fuzzy-PI control strategy is presented. A comparison between the developed vector controller with the proposed Fuzzy-PI strategy and the same vector controller with a conventional PI strategy employing fixed gains has been done. The simulation results also show that using the proposed controller, the dynamic response of the system can be improved and more precise control is achieved.","PeriodicalId":415118,"journal":{"name":"2010 International Conference on Mechanical and Electrical Technology","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126976962","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 : 2010-10-07DOI: 10.1109/ICMET.2010.5598487
A. Barboza, N. Sharma, C. Sudhir
The effect of injector opening pressure and injection timing on cyclic variations in combustion parameters of a CI engine fuelled with methyl esters of jatropha oil blended with petroleum diesel for 20% volume ratio(B20) at full load, are reported in this paper. The experiments were carried out at three injection timings of 20°bTDC, 23°bTDC, 26°bTDC and four IOP's of 180, 200, 220 & 240 bar. It was observed that advancing the injection timing and increasing the IOP up to 220 bar resulted in lower cyclic variations in peak pressure and IMEP, but at the cost of higher rate of pressure rise.
{"title":"Cyclic combustion studies of a CI engine operating on jatropha B20 fuel","authors":"A. Barboza, N. Sharma, C. Sudhir","doi":"10.1109/ICMET.2010.5598487","DOIUrl":"https://doi.org/10.1109/ICMET.2010.5598487","url":null,"abstract":"The effect of injector opening pressure and injection timing on cyclic variations in combustion parameters of a CI engine fuelled with methyl esters of jatropha oil blended with petroleum diesel for 20% volume ratio(B20) at full load, are reported in this paper. The experiments were carried out at three injection timings of 20°bTDC, 23°bTDC, 26°bTDC and four IOP's of 180, 200, 220 & 240 bar. It was observed that advancing the injection timing and increasing the IOP up to 220 bar resulted in lower cyclic variations in peak pressure and IMEP, but at the cost of higher rate of pressure rise.","PeriodicalId":415118,"journal":{"name":"2010 International Conference on Mechanical and Electrical Technology","volume":"9 2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130362269","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 : 2010-10-07DOI: 10.1109/ICMET.2010.5598338
O. Donţu, D. Besnea, R. Ciobanu, I. Avarvarei, G. Gheorghe
Given the rising prices of energy, the prospect of exhausting the hydrocarbon reserves and the harsh restrictions imposed in order to protect the environment, the problem of saving energy resources thus constitutes a major concern for mankind. According to these issues our team has designed and developed a system who generate a magnetic field used for treatment of some fuel fluids, aiming to raise the combustion efficiency and decreasing the amount of pollutants removed after combustion in large power plants.
{"title":"Modular system used for treating fuel fluids in a magnetic field","authors":"O. Donţu, D. Besnea, R. Ciobanu, I. Avarvarei, G. Gheorghe","doi":"10.1109/ICMET.2010.5598338","DOIUrl":"https://doi.org/10.1109/ICMET.2010.5598338","url":null,"abstract":"Given the rising prices of energy, the prospect of exhausting the hydrocarbon reserves and the harsh restrictions imposed in order to protect the environment, the problem of saving energy resources thus constitutes a major concern for mankind. According to these issues our team has designed and developed a system who generate a magnetic field used for treatment of some fuel fluids, aiming to raise the combustion efficiency and decreasing the amount of pollutants removed after combustion in large power plants.","PeriodicalId":415118,"journal":{"name":"2010 International Conference on Mechanical and Electrical Technology","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131930098","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 : 2010-10-07DOI: 10.1109/ICMET.2010.5598332
En Xie, Weiguo Liu, Y. Huangfu, Ling Luo
Brushless DC Motor (BLDCM) usually has 3 hall position sensors, and they play a key role for motor control. In order to determine hall locations relative to the stator windings, the permanent magnet motor rotor flux-oriented method has been analyzed and it provides a theoretical basis for us. Thus, the exact locations of sensors can be found. Through the decode logic of 3 hall signals, 6 drive signals for the three-phase full-bridge can be got. In this paper, the experiments are achieved, and the motor ran stability. The current waveform is recorded and analyzed, and it shows the locations of hall sensors and the decode logic are correct.
{"title":"Research on determining the locations of BLDCM hall sensors according to rotor flux-oriented","authors":"En Xie, Weiguo Liu, Y. Huangfu, Ling Luo","doi":"10.1109/ICMET.2010.5598332","DOIUrl":"https://doi.org/10.1109/ICMET.2010.5598332","url":null,"abstract":"Brushless DC Motor (BLDCM) usually has 3 hall position sensors, and they play a key role for motor control. In order to determine hall locations relative to the stator windings, the permanent magnet motor rotor flux-oriented method has been analyzed and it provides a theoretical basis for us. Thus, the exact locations of sensors can be found. Through the decode logic of 3 hall signals, 6 drive signals for the three-phase full-bridge can be got. In this paper, the experiments are achieved, and the motor ran stability. The current waveform is recorded and analyzed, and it shows the locations of hall sensors and the decode logic are correct.","PeriodicalId":415118,"journal":{"name":"2010 International Conference on Mechanical and Electrical Technology","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134297832","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}
Real-time monitoring of temperature has become crucial in cases like server room, incubators of infants in hospitals, coal mines, green houses etc. In all these cases we prefer a temperature sensor which ensures user's safety, proper alarming conditions, be simple to use (user friendly), easy calibrations, small and light weight, inexpensive and effective. The aim of this system is to provide an effective alert mechanism when the temperature of the scenario goes beyond a critical value. The temperature change in each instant of the surrounding is fed into the database and here it is processed by the pc, which monitors it. Then if the parameter goes beyond a critical value, which can be calibrated initially, an alarm is turned on in the room to give a primary warning to the person in-charge of the locality. If there is no adequate response and the temperature is allowed to rise, an SMS (Short Message Service) notification is given via wireless modem to the responsible person. An emergency call is also made to the responsible person via the wireless modem and a recorded voice is played. This way the alert mechanism reaches effectively to the concerned
{"title":"Autonomous Smart Server Guard for advanced safety measure using wireless mobile technology","authors":"Rajesh Kannan Megalingam, Vineeth Radhakrishnan, Deepak Krishnan Melepurath Unnikrishnan, Denny Chakko Jacob, Akhil Kakkanattu Sudhakaran","doi":"10.1109/ICMET.2010.5598441","DOIUrl":"https://doi.org/10.1109/ICMET.2010.5598441","url":null,"abstract":"Real-time monitoring of temperature has become crucial in cases like server room, incubators of infants in hospitals, coal mines, green houses etc. In all these cases we prefer a temperature sensor which ensures user's safety, proper alarming conditions, be simple to use (user friendly), easy calibrations, small and light weight, inexpensive and effective. The aim of this system is to provide an effective alert mechanism when the temperature of the scenario goes beyond a critical value. The temperature change in each instant of the surrounding is fed into the database and here it is processed by the pc, which monitors it. Then if the parameter goes beyond a critical value, which can be calibrated initially, an alarm is turned on in the room to give a primary warning to the person in-charge of the locality. If there is no adequate response and the temperature is allowed to rise, an SMS (Short Message Service) notification is given via wireless modem to the responsible person. An emergency call is also made to the responsible person via the wireless modem and a recorded voice is played. This way the alert mechanism reaches effectively to the concerned","PeriodicalId":415118,"journal":{"name":"2010 International Conference on Mechanical and Electrical Technology","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2010-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131608580","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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