Pub Date : 2010-10-07DOI: 10.1109/ICMET.2010.5598334
G. Singh, R. P. Yadav, V. Janyani
We demonstrate a polarization and wavelength independent digital photonic switch with optimized on-chip area coverage and reduced driving voltage. A symmetrical SiO2 buffer layer was introduced between channel and electrode regions to optimize its thermal stability and to reduce absorption losses. Switching is achieved through adiabatic mode evolution in an asymmetric waveguide junction. The switch has been found satisfactory for THz operation with switching voltages in the range of ±18-to-21V and switch losses in the range of 0.50 to 0.75% only. A channel profile of titanium indiffused waveguide on an x-cut lithium niobate substrate is used for lightwave propagation.
{"title":"Performance analysis of Ti∶ LiNbO3 1×2 digital photonic switch with SiO2 buffer layer","authors":"G. Singh, R. P. Yadav, V. Janyani","doi":"10.1109/ICMET.2010.5598334","DOIUrl":"https://doi.org/10.1109/ICMET.2010.5598334","url":null,"abstract":"We demonstrate a polarization and wavelength independent digital photonic switch with optimized on-chip area coverage and reduced driving voltage. A symmetrical SiO2 buffer layer was introduced between channel and electrode regions to optimize its thermal stability and to reduce absorption losses. Switching is achieved through adiabatic mode evolution in an asymmetric waveguide junction. The switch has been found satisfactory for THz operation with switching voltages in the range of ±18-to-21V and switch losses in the range of 0.50 to 0.75% only. A channel profile of titanium indiffused waveguide on an x-cut lithium niobate substrate is used for lightwave propagation.","PeriodicalId":415118,"journal":{"name":"2010 International Conference on Mechanical and Electrical Technology","volume":"172 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":"121236310","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.2010.5598340
Ying You, Bin He, Gangyan Li
City Bus Information Integrated Control System (CBIICS) is a complex product of automobile electronics which accords with the terms of conducting product self-organizing configuration design. Considering information fractal of CBIICS, rules decomposing CBIICS is constructed based on granularity of function information and self-similarity between modules in different levels to realize module partition under combination. Meantime, hierarchy model of function information and decomposition model of CBIICS are built respectively and function modules are effectively partitioned for CBIICS. The aim of rational function module partition is to lay the foundation for the combination of configuration unit in the self-organizing configuration design for CBIICS.
{"title":"The method of decomposition for City Bus Information Integrated Control System based on information fractal","authors":"Ying You, Bin He, Gangyan Li","doi":"10.1109/ICMET.2010.5598340","DOIUrl":"https://doi.org/10.1109/ICMET.2010.5598340","url":null,"abstract":"City Bus Information Integrated Control System (CBIICS) is a complex product of automobile electronics which accords with the terms of conducting product self-organizing configuration design. Considering information fractal of CBIICS, rules decomposing CBIICS is constructed based on granularity of function information and self-similarity between modules in different levels to realize module partition under combination. Meantime, hierarchy model of function information and decomposition model of CBIICS are built respectively and function modules are effectively partitioned for CBIICS. The aim of rational function module partition is to lay the foundation for the combination of configuration unit in the self-organizing configuration design for CBIICS.","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":"129401018","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.2010.5598449
Yuhua Liu, Zhenrong Luo, Kaihua Xu, Lilong Chen
Wireless sensor network which is composed of a large number of low-cost, low-power, multifunctional sensor nodes deployed in a remote environment to monitor and analyze the data collected in the physical world in a timely manner. Based on the feature of nodes with limited energy, people have done some deep research on the prolongation of the lifetime in the WSN. In this paper, we focus on reducing energy load among all the nodes and present an improved algorithm LEACH-D based on LEACH. The algorithm combines the ideas of adjusting the threshold function about the nodes, a fixed radius of the clustering and a multi-hop communication mechanism among the cluster heads to achieve advanced in terms of system lifetime energy load among all the nodes. Simulation results show that the new strategy of cluster-heads election can improve the network's lifetime effectively.
{"title":"A reliable clustering algorithm base on LEACH protocol in wireless mobile sensor networks","authors":"Yuhua Liu, Zhenrong Luo, Kaihua Xu, Lilong Chen","doi":"10.1109/ICMET.2010.5598449","DOIUrl":"https://doi.org/10.1109/ICMET.2010.5598449","url":null,"abstract":"Wireless sensor network which is composed of a large number of low-cost, low-power, multifunctional sensor nodes deployed in a remote environment to monitor and analyze the data collected in the physical world in a timely manner. Based on the feature of nodes with limited energy, people have done some deep research on the prolongation of the lifetime in the WSN. In this paper, we focus on reducing energy load among all the nodes and present an improved algorithm LEACH-D based on LEACH. The algorithm combines the ideas of adjusting the threshold function about the nodes, a fixed radius of the clustering and a multi-hop communication mechanism among the cluster heads to achieve advanced in terms of system lifetime energy load among all the nodes. Simulation results show that the new strategy of cluster-heads election can improve the network's lifetime effectively.","PeriodicalId":415118,"journal":{"name":"2010 International Conference on Mechanical and Electrical Technology","volume":"9 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":"117142987","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.2010.5598419
M. M. Rahman, K. Hamada, M. M. Noor, K. Kadirgama, R. A. Bakar
In this work, effect of the inlet conditions for the intake charge on the in-cylinder heat transfer characteristics for port injection Hydrogen Fueled Engine H2ICE are investigated through steady state simulation. One dimensional gas dynamics was described the flow and heat transfer in the components of the engine model. Firstly a brief demonstration for the model description was inserted; followed by the model governing equations. The engine model is simulated with variable engine speed and AFR with influence of the variation of intake charge conditions (pressure and temperature). Engine speed varied from 2000 rpm to 5000 rpm with increment equal to 1000 rpm, while AFR changed from stoichiometric to lean limit. As well as the inlet pressure varied from 0.95 bar to 1.05 bar with 0.05 interval and the inlet temperature varied from 290 to 310 with 10 interval. The combined effects for the intake charge conditions with variation of AFR and the engine speed on the in-cylinder heat transfer characteristics for port injection H2ICE are presented in this paper. The baseline engine model is verified with existing previous published result. The results showed the heat transfer characteristics to be more affected by changes in the intake pressure than in the temperature. It was also found that the effect of change for the intake charge pressure disappeared for lean mixture. Beside that the acquired results are presented by examining the dependency of in-cylinder heat transfer rate on the engine speed and AFR.
{"title":"Effect of intake conditions on heat transfer characteristics for port injection hydrogen fueled engine","authors":"M. M. Rahman, K. Hamada, M. M. Noor, K. Kadirgama, R. A. Bakar","doi":"10.1109/ICMET.2010.5598419","DOIUrl":"https://doi.org/10.1109/ICMET.2010.5598419","url":null,"abstract":"In this work, effect of the inlet conditions for the intake charge on the in-cylinder heat transfer characteristics for port injection Hydrogen Fueled Engine H2ICE are investigated through steady state simulation. One dimensional gas dynamics was described the flow and heat transfer in the components of the engine model. Firstly a brief demonstration for the model description was inserted; followed by the model governing equations. The engine model is simulated with variable engine speed and AFR with influence of the variation of intake charge conditions (pressure and temperature). Engine speed varied from 2000 rpm to 5000 rpm with increment equal to 1000 rpm, while AFR changed from stoichiometric to lean limit. As well as the inlet pressure varied from 0.95 bar to 1.05 bar with 0.05 interval and the inlet temperature varied from 290 to 310 with 10 interval. The combined effects for the intake charge conditions with variation of AFR and the engine speed on the in-cylinder heat transfer characteristics for port injection H2ICE are presented in this paper. The baseline engine model is verified with existing previous published result. The results showed the heat transfer characteristics to be more affected by changes in the intake pressure than in the temperature. It was also found that the effect of change for the intake charge pressure disappeared for lean mixture. Beside that the acquired results are presented by examining the dependency of in-cylinder heat transfer rate on the engine speed and AFR.","PeriodicalId":415118,"journal":{"name":"2010 International Conference on Mechanical and Electrical Technology","volume":"78 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":"115154546","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.2010.5598490
A. Gasparics, G. Vértesy, T. Farkas, J. Szollosy
Fluxset magnetic sensor based magnetic imaging applications and their benefits are presented in this paper in the scopes of aviation related non-destructive testing applications.
本文介绍了基于磁通集磁传感器的磁成像技术在航空无损检测领域的应用及其优势。
{"title":"Magnetic imaging in non-destructive testing","authors":"A. Gasparics, G. Vértesy, T. Farkas, J. Szollosy","doi":"10.1109/ICMET.2010.5598490","DOIUrl":"https://doi.org/10.1109/ICMET.2010.5598490","url":null,"abstract":"Fluxset magnetic sensor based magnetic imaging applications and their benefits are presented in this paper in the scopes of aviation related non-destructive testing applications.","PeriodicalId":415118,"journal":{"name":"2010 International Conference on Mechanical and Electrical Technology","volume":"153 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":"126927229","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.2010.5598414
M. Sohail, Yan Chao, M. Younis, M. Afzal, Zahid Maqbool
The performances of K-ω SST(Shear-Stress Transport) turbulence model and high order low dissipative Flux difference scheme of Roe are evaluated against experimental flow fields at different geometries and angle of attacks at supersonic mach no. The numerical predictions include lift, drag and pitching moment coefficients at different angle of attacks. Most significantly, this research provides a sensitivity study on the accuracy of the solutions with respect to the effects of free stream turbulence, grid resolution, grid spacing near the wall, initial conditions, numerical methods and free stream Mach number effects on compressible flows. Comparison of two geometries, cone cylinder and cone cylinder with fins is provided in order to study the effects on the aerodynamics characteristics by the addition of the lifting surfaces and the same is compared with the available experimental data. For the present study supersonic flow is simulated at Mach number 4 and the angle of attack is varied.
{"title":"Effects of turbulence modeling on aerodynamic characteristics of a conventional tailed missile configuration","authors":"M. Sohail, Yan Chao, M. Younis, M. Afzal, Zahid Maqbool","doi":"10.1109/ICMET.2010.5598414","DOIUrl":"https://doi.org/10.1109/ICMET.2010.5598414","url":null,"abstract":"The performances of K-ω SST(Shear-Stress Transport) turbulence model and high order low dissipative Flux difference scheme of Roe are evaluated against experimental flow fields at different geometries and angle of attacks at supersonic mach no. The numerical predictions include lift, drag and pitching moment coefficients at different angle of attacks. Most significantly, this research provides a sensitivity study on the accuracy of the solutions with respect to the effects of free stream turbulence, grid resolution, grid spacing near the wall, initial conditions, numerical methods and free stream Mach number effects on compressible flows. Comparison of two geometries, cone cylinder and cone cylinder with fins is provided in order to study the effects on the aerodynamics characteristics by the addition of the lifting surfaces and the same is compared with the available experimental data. For the present study supersonic flow is simulated at Mach number 4 and the angle of attack is varied.","PeriodicalId":415118,"journal":{"name":"2010 International Conference on Mechanical and Electrical Technology","volume":"203 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":"126080649","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.2010.5598337
S. Muralidharan, C. A. Asir Rajan
The Objective of this paper is to design Series resonant converter with 200W, 250 KHz switching frequency which is used for radar power supply and to verify the results using PSPICE. The properties of the energy feedback control, and particularly the optimal trajectory control law, are analyzed. As a result, the state space is considered to be divided into two sub-spaces that correspond to different states of the switches in the converter. An analog neural network learns to classify these two classes by means of a learning algorithm. A simple electronic implementation of this controller is proposed and applied to a series resonant converter (SRC). Results based on prototype measurements show a good improvement in the SRC response versus classical control methods based on the linearization of the state variable equations around a working point and confirm the validity of the neural approach.
{"title":"Design, simulation and analysis of neural controller based Series resonant converter","authors":"S. Muralidharan, C. A. Asir Rajan","doi":"10.1109/ICMET.2010.5598337","DOIUrl":"https://doi.org/10.1109/ICMET.2010.5598337","url":null,"abstract":"The Objective of this paper is to design Series resonant converter with 200W, 250 KHz switching frequency which is used for radar power supply and to verify the results using PSPICE. The properties of the energy feedback control, and particularly the optimal trajectory control law, are analyzed. As a result, the state space is considered to be divided into two sub-spaces that correspond to different states of the switches in the converter. An analog neural network learns to classify these two classes by means of a learning algorithm. A simple electronic implementation of this controller is proposed and applied to a series resonant converter (SRC). Results based on prototype measurements show a good improvement in the SRC response versus classical control methods based on the linearization of the state variable equations around a working point and confirm the validity of the neural approach.","PeriodicalId":415118,"journal":{"name":"2010 International Conference on Mechanical and Electrical Technology","volume":"90 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":"127581972","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.2010.5598440
Xin Zhang, Guangyong Li, Yipeng Ma, Dongmei Wang
CFD simulation can largely reduce the workload for molding, processing and measuring in the emitter development. However, as the emitter flow typically sits between conventional-scale flow and micro-scale flow, the influencing factors of CFD simulation precision are not clear yet. To address this issue, six types of emitter labyrinth channels were made for this study. By comparing the measuring results with the simulation results generated by Fluent®, the influence factors of simulation precision were analyzed. The study showed that near wall treatment does not affect simulation precision under the standard model. For emitters with small flow rate, where the ratio of mesh size to minimum channel size is less than 1/6, simulation results are irrelevant to mesh size.
{"title":"Influencing factors of CFD simulation precision for the emitter channel","authors":"Xin Zhang, Guangyong Li, Yipeng Ma, Dongmei Wang","doi":"10.1109/ICMET.2010.5598440","DOIUrl":"https://doi.org/10.1109/ICMET.2010.5598440","url":null,"abstract":"CFD simulation can largely reduce the workload for molding, processing and measuring in the emitter development. However, as the emitter flow typically sits between conventional-scale flow and micro-scale flow, the influencing factors of CFD simulation precision are not clear yet. To address this issue, six types of emitter labyrinth channels were made for this study. By comparing the measuring results with the simulation results generated by Fluent®, the influence factors of simulation precision were analyzed. The study showed that near wall treatment does not affect simulation precision under the standard model. For emitters with small flow rate, where the ratio of mesh size to minimum channel size is less than 1/6, simulation results are irrelevant to mesh size.","PeriodicalId":415118,"journal":{"name":"2010 International Conference on Mechanical and Electrical Technology","volume":"77 3 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":"124265330","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.2010.5598330
M. Khaldi, Tammam M. Obeid
Scaled-model helicopters are highly nonlinear, coupled, and unstable machines. They have fast response and controlling them is very complicated and need high degree of precision. In this paper, a detailed nonlinear model is derived. The derived nonlinear model is linearized around a nominal point in the hovering state and a linear classical controller is designed. Then, an optimization algorithm is applied where the linear controller's parameters are adjusted offline so that the Integral Time-multiplied Square Error (ITSE), the error between the output response of the nonlinear system and the reference signal, is minimal. Both the linear and the optimized controllers are augmented with the nonlinear model and the simulation results are compared.
{"title":"PI-D controller with optimized parameters of a scaled-model helicopter","authors":"M. Khaldi, Tammam M. Obeid","doi":"10.1109/ICMET.2010.5598330","DOIUrl":"https://doi.org/10.1109/ICMET.2010.5598330","url":null,"abstract":"Scaled-model helicopters are highly nonlinear, coupled, and unstable machines. They have fast response and controlling them is very complicated and need high degree of precision. In this paper, a detailed nonlinear model is derived. The derived nonlinear model is linearized around a nominal point in the hovering state and a linear classical controller is designed. Then, an optimization algorithm is applied where the linear controller's parameters are adjusted offline so that the Integral Time-multiplied Square Error (ITSE), the error between the output response of the nonlinear system and the reference signal, is minimal. Both the linear and the optimized controllers are augmented with the nonlinear model and the simulation results are compared.","PeriodicalId":415118,"journal":{"name":"2010 International Conference on Mechanical and Electrical Technology","volume":"118 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":"125044459","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.2010.5598494
S. Shetty, U. A. Kini, P. Shetty
The inhibition effect of o- cresol on the corrosion of 6061 Al alloy/SiCp composite in 1 M hydrochloric acid solution at four different temperatures has been investigated using potentiostatic polarization technique and weight loss method. The results obtained reveal that o-cresol is an efficient cathodic inhibitor with greater than 70% of efficiency in the range of temperature studied. The adsorption of the inhibitor on the composite surface was found to obey Temkins' adsorption isotherm and the inhibition is governed by physisorption mechanism.
{"title":"Corrosion inhibition of 15 Vol. % 6061 Al alloy/SiCp composite in 1 M hydrochloric acid medium","authors":"S. Shetty, U. A. Kini, P. Shetty","doi":"10.1109/ICMET.2010.5598494","DOIUrl":"https://doi.org/10.1109/ICMET.2010.5598494","url":null,"abstract":"The inhibition effect of o- cresol on the corrosion of 6061 Al alloy/SiCp composite in 1 M hydrochloric acid solution at four different temperatures has been investigated using potentiostatic polarization technique and weight loss method. The results obtained reveal that o-cresol is an efficient cathodic inhibitor with greater than 70% of efficiency in the range of temperature studied. The adsorption of the inhibitor on the composite surface was found to obey Temkins' adsorption isotherm and the inhibition is governed by physisorption mechanism.","PeriodicalId":415118,"journal":{"name":"2010 International Conference on Mechanical and Electrical Technology","volume":"11 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":"125562943","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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