Pub Date : 2011-09-23DOI: 10.1109/MEC.2011.6025468
Wang Gang, Z. Xiaorong, Cang HaiTao, Li LiZhi
Forwarding probability were randomly selected in the traditional probabilistic broadcasting algorithms of Mobile ad hoc network (MANET) and nods were sending a broadcast message to all one hop neighbor nodes. It was impossible to have dynamical adjustment according to the density of network nodes. This article applied the percolation theory to optimization of broadcasting schemes in MANET. We put forward a new optimal algorithms, an optimized probabilistic broadcasting of MANET for percolation theory. We adopted the directional forwarding method, nodes forwarded the message with the critical probability which could just connect all network. Through mathematical reasoning and NS2 simulation, it shown that the algorithm significantly improves the data packet delivery ratio, average delay and other performance, and greatly enhances the utilization of node energy.
{"title":"Research on the probabilistic broadcasting algorithms of Mobile ad hoc network based on percolation theory","authors":"Wang Gang, Z. Xiaorong, Cang HaiTao, Li LiZhi","doi":"10.1109/MEC.2011.6025468","DOIUrl":"https://doi.org/10.1109/MEC.2011.6025468","url":null,"abstract":"Forwarding probability were randomly selected in the traditional probabilistic broadcasting algorithms of Mobile ad hoc network (MANET) and nods were sending a broadcast message to all one hop neighbor nodes. It was impossible to have dynamical adjustment according to the density of network nodes. This article applied the percolation theory to optimization of broadcasting schemes in MANET. We put forward a new optimal algorithms, an optimized probabilistic broadcasting of MANET for percolation theory. We adopted the directional forwarding method, nodes forwarded the message with the critical probability which could just connect all network. Through mathematical reasoning and NS2 simulation, it shown that the algorithm significantly improves the data packet delivery ratio, average delay and other performance, and greatly enhances the utilization of node energy.","PeriodicalId":386083,"journal":{"name":"2011 International Conference on Mechatronic Science, Electric Engineering and Computer (MEC)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115439122","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 : 2011-09-23DOI: 10.1109/MEC.2011.6025868
C. Wan, C. Guo
In most of air conditioning system, the lubricant oil is mixed together with refrigerant to lubricate automotive air conditioning compressor, it is expected that the small quantity of lubricant oil should be separated from the gas mixture as far as possible, in order that it can lubricate better. The application of ‘cyclone separation theory’ is a fine method to improve separation efficiency. Computational fluid dynamics (CFD) is one of the branches of fluid mechanics that uses numerical methods and algorithms to solve and analyze problems that involve fluid flows. With the simulation, some regularity would be discovered by a series of experiments that the angles (a) between two inlets of compressor separator were used different magnitude, the results showed that the separation efficiency was obviously affected by the location relation of the two inlets. Finally, the optimum parameters would be obtained to improve the separation efficiency for the compressor separator.
{"title":"Analysis and optimization for oil-gas separator of automotive air conditioning compressor","authors":"C. Wan, C. Guo","doi":"10.1109/MEC.2011.6025868","DOIUrl":"https://doi.org/10.1109/MEC.2011.6025868","url":null,"abstract":"In most of air conditioning system, the lubricant oil is mixed together with refrigerant to lubricate automotive air conditioning compressor, it is expected that the small quantity of lubricant oil should be separated from the gas mixture as far as possible, in order that it can lubricate better. The application of ‘cyclone separation theory’ is a fine method to improve separation efficiency. Computational fluid dynamics (CFD) is one of the branches of fluid mechanics that uses numerical methods and algorithms to solve and analyze problems that involve fluid flows. With the simulation, some regularity would be discovered by a series of experiments that the angles (a) between two inlets of compressor separator were used different magnitude, the results showed that the separation efficiency was obviously affected by the location relation of the two inlets. Finally, the optimum parameters would be obtained to improve the separation efficiency for the compressor separator.","PeriodicalId":386083,"journal":{"name":"2011 International Conference on Mechatronic Science, Electric Engineering and Computer (MEC)","volume":"99 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124109353","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 : 2011-09-23DOI: 10.1109/MEC.2011.6025830
Yan Yaoxing, Cao Yutao
Period water balance principle is often used in reservoir flood dispatching calculation and iteration is the main algorithm. However, this method's cumulative error is very large and can not be eliminated because of precision control and other reasons. In this paper, the author improves the conventional iterative algorithm and proposes cumulative water balance flood dispatching algorithm, which can reduce the accumulated calculation error, improve the accuracy effectively, and can provide reliable information for reservoir flood dispatching operation.
{"title":"Improvement algorithm of reducing the calculation error of reservoir flood dispatching","authors":"Yan Yaoxing, Cao Yutao","doi":"10.1109/MEC.2011.6025830","DOIUrl":"https://doi.org/10.1109/MEC.2011.6025830","url":null,"abstract":"Period water balance principle is often used in reservoir flood dispatching calculation and iteration is the main algorithm. However, this method's cumulative error is very large and can not be eliminated because of precision control and other reasons. In this paper, the author improves the conventional iterative algorithm and proposes cumulative water balance flood dispatching algorithm, which can reduce the accumulated calculation error, improve the accuracy effectively, and can provide reliable information for reservoir flood dispatching operation.","PeriodicalId":386083,"journal":{"name":"2011 International Conference on Mechatronic Science, Electric Engineering and Computer (MEC)","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124127080","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 : 2011-09-23DOI: 10.1109/MEC.2011.6025763
Keqiang Su, Wenxing Fu
The hardware-in-the-loop simulation system is a necessary technique in the development of modern weapons. To improve the precision and real-time of the hardware-in-the-loop simulation system, the High Level architecture(HLA) is used to construct a new hardware-in-the-loop simulation system. Firstly, we give a brief introduction to HLA and apply HLA to the hardware-in-the-loop simulation system. A simulation support software developed according to the specifications of HLA interface, RTI provides a number of interconnected simulation services and serve as the basis for the HLA simulation system to do layer management and extensible distributed simulation. The whole simulation system is considered as a federation and distributed into several federations to carry out the distributed simulation. We reach the conclusion that the problems for the practical application of HLA to a large-scale interactive simulation system will be solved by enhancing the algorithm and performance of RTI software.
{"title":"Designing hardware-in-the-loop simulation system for missile with high level architecture","authors":"Keqiang Su, Wenxing Fu","doi":"10.1109/MEC.2011.6025763","DOIUrl":"https://doi.org/10.1109/MEC.2011.6025763","url":null,"abstract":"The hardware-in-the-loop simulation system is a necessary technique in the development of modern weapons. To improve the precision and real-time of the hardware-in-the-loop simulation system, the High Level architecture(HLA) is used to construct a new hardware-in-the-loop simulation system. Firstly, we give a brief introduction to HLA and apply HLA to the hardware-in-the-loop simulation system. A simulation support software developed according to the specifications of HLA interface, RTI provides a number of interconnected simulation services and serve as the basis for the HLA simulation system to do layer management and extensible distributed simulation. The whole simulation system is considered as a federation and distributed into several federations to carry out the distributed simulation. We reach the conclusion that the problems for the practical application of HLA to a large-scale interactive simulation system will be solved by enhancing the algorithm and performance of RTI software.","PeriodicalId":386083,"journal":{"name":"2011 International Conference on Mechatronic Science, Electric Engineering and Computer (MEC)","volume":"305 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124282669","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 : 2011-09-23DOI: 10.1109/MEC.2011.6025448
Yimin Li, Chengjun Xie
The Deep Web is characterized by its large scale, domain diversity, very high-quality content, and vast heterogeneous collections of structured data. Traditional data integration techniques are no longer valid in the face of such heterogeneity and scale, and the integrated interfaces can become too complicated for ordinary users to use. In this paper, we propose a novel keyword-based user interface system EasyUI for achieving web-scale data integration and easy to use for ordinary users. Dealing with heterogeneity on the web-scale presents many new challenges. We proposed new methods to address these challenges, i.e., indexing schemata terms, data values, and domains features of the Deep Web, processing user input, mapping the user query to domain that the user query most likely corresponds to, and translating the user query into candidate structured queries for the domain. Our experiments show that EasyUI performs effectively.
{"title":"A easy user interface of IR system over large scale deep web","authors":"Yimin Li, Chengjun Xie","doi":"10.1109/MEC.2011.6025448","DOIUrl":"https://doi.org/10.1109/MEC.2011.6025448","url":null,"abstract":"The Deep Web is characterized by its large scale, domain diversity, very high-quality content, and vast heterogeneous collections of structured data. Traditional data integration techniques are no longer valid in the face of such heterogeneity and scale, and the integrated interfaces can become too complicated for ordinary users to use. In this paper, we propose a novel keyword-based user interface system EasyUI for achieving web-scale data integration and easy to use for ordinary users. Dealing with heterogeneity on the web-scale presents many new challenges. We proposed new methods to address these challenges, i.e., indexing schemata terms, data values, and domains features of the Deep Web, processing user input, mapping the user query to domain that the user query most likely corresponds to, and translating the user query into candidate structured queries for the domain. Our experiments show that EasyUI performs effectively.","PeriodicalId":386083,"journal":{"name":"2011 International Conference on Mechatronic Science, Electric Engineering and Computer (MEC)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124355944","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 : 2011-09-23DOI: 10.1109/MEC.2011.6025556
Lu Chenguang, Zhang Mingyuan, L. Jianyong, Wang Long
In this paper, a portable snake-like search and rescue apparatus is developed, which can search and rescue in gap of ruin formed by natural disasters through the life detectors, night video imaging device and other electronic equipment fixed on its tip. It can also provide supplies for survivors under debris. The apparatus consists of two parts, namely the flexible arm and integrated control platform. The flexible arm is divided into detection unit, direction control unit, flexible hollow segments and quick connector. Furthermore, some field experiments proved that the search and rescue apparatus used in gap has perfect performances of direction control and adaptability under different conditions. It is of foundation for the apparatus applying to actual disaster site.
{"title":"Design of a portable snake-like search and rescue apparatus used in the gap","authors":"Lu Chenguang, Zhang Mingyuan, L. Jianyong, Wang Long","doi":"10.1109/MEC.2011.6025556","DOIUrl":"https://doi.org/10.1109/MEC.2011.6025556","url":null,"abstract":"In this paper, a portable snake-like search and rescue apparatus is developed, which can search and rescue in gap of ruin formed by natural disasters through the life detectors, night video imaging device and other electronic equipment fixed on its tip. It can also provide supplies for survivors under debris. The apparatus consists of two parts, namely the flexible arm and integrated control platform. The flexible arm is divided into detection unit, direction control unit, flexible hollow segments and quick connector. Furthermore, some field experiments proved that the search and rescue apparatus used in gap has perfect performances of direction control and adaptability under different conditions. It is of foundation for the apparatus applying to actual disaster site.","PeriodicalId":386083,"journal":{"name":"2011 International Conference on Mechatronic Science, Electric Engineering and Computer (MEC)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124437174","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 : 2011-09-23DOI: 10.1109/MEC.2011.6025390
Yuhong Wang
Harmonic wave is harmful to electric power system and equipment. In this paper a harmonic parameter estimation method based on ESPRIT (Estimating Signal Parameter via Rotational Invariance Techniques; ESPRIT) method is proposed. This method is able to depress noise and has better differentiation capability and estimation precision and stability. Design based on DSP of the harmonic detection test device. Computer simulation results show the effectiveness and superiority of the algorithm.
{"title":"Cross-high-spectrum ESPRIT algorithm and DSP realization on power harmonics detection","authors":"Yuhong Wang","doi":"10.1109/MEC.2011.6025390","DOIUrl":"https://doi.org/10.1109/MEC.2011.6025390","url":null,"abstract":"Harmonic wave is harmful to electric power system and equipment. In this paper a harmonic parameter estimation method based on ESPRIT (Estimating Signal Parameter via Rotational Invariance Techniques; ESPRIT) method is proposed. This method is able to depress noise and has better differentiation capability and estimation precision and stability. Design based on DSP of the harmonic detection test device. Computer simulation results show the effectiveness and superiority of the algorithm.","PeriodicalId":386083,"journal":{"name":"2011 International Conference on Mechatronic Science, Electric Engineering and Computer (MEC)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114347234","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 : 2011-09-23DOI: 10.1109/MEC.2011.6025580
Zesong Tan, Jia You, Xianfeng Jiang, X. Shao
The objective of this study was to present a novel method to make a preoperative effect of surgery based on occlusal contact. This method could make preoperative prediction for the orthognathic surgery. The three-dimensional model including maxillary and mandible was reconstructed by CT data, then the finite element model of occlusion was rebuilt after simplified articular disc, The stress contour areas of the dental surface was obtained by simulations implemented by finite element software. After transforming the regional distribution of stress into the form of bite points, the predicting system of surgery based on occlusal points was set up. It is helpful for the surgeon make medical treatment program. This method assures both facial appearance change effect and the number of occlusal point, so the method has a certain practical application value.
{"title":"Surgical planning and simulation study of orthognathic surgery based on occlusal contact","authors":"Zesong Tan, Jia You, Xianfeng Jiang, X. Shao","doi":"10.1109/MEC.2011.6025580","DOIUrl":"https://doi.org/10.1109/MEC.2011.6025580","url":null,"abstract":"The objective of this study was to present a novel method to make a preoperative effect of surgery based on occlusal contact. This method could make preoperative prediction for the orthognathic surgery. The three-dimensional model including maxillary and mandible was reconstructed by CT data, then the finite element model of occlusion was rebuilt after simplified articular disc, The stress contour areas of the dental surface was obtained by simulations implemented by finite element software. After transforming the regional distribution of stress into the form of bite points, the predicting system of surgery based on occlusal points was set up. It is helpful for the surgeon make medical treatment program. This method assures both facial appearance change effect and the number of occlusal point, so the method has a certain practical application value.","PeriodicalId":386083,"journal":{"name":"2011 International Conference on Mechatronic Science, Electric Engineering and Computer (MEC)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114799679","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 : 2011-09-23DOI: 10.1109/MEC.2011.6025549
Weihai Liu, Xiusheng Cheng, Yong Shan, Hongjian Li, Haiqing Yang
Pedestrian protective performance is an indivisible part of Euro NCAP assessment protocol, and which requirements are increasing continuously. To meet the stricter requirements, the pace of development in pedestrian countermeasures is increasing rapidly. In the study, the tibia acceleration and knee bending angle failed to satisfy the performance rating aimed at Euro NCAP five stars after the lower legform impact test. Using Computer Aided Engineering (CAE) modeling, the performance of the energy absorber and lower stiffener was analyzed for knee bending angle, tibia acceleration, and knee shear displacement, and then the improvement of bumper structure for lower leg protection is given through a combination of material properties and design within current styling and packaging space. The legform impact test results demonstrated that the new bumper structure can get the higher score rating for pedestrian lower leg.
{"title":"Improvement of bumper structure for pedestrian lower leg protection based on Euro-NCAP","authors":"Weihai Liu, Xiusheng Cheng, Yong Shan, Hongjian Li, Haiqing Yang","doi":"10.1109/MEC.2011.6025549","DOIUrl":"https://doi.org/10.1109/MEC.2011.6025549","url":null,"abstract":"Pedestrian protective performance is an indivisible part of Euro NCAP assessment protocol, and which requirements are increasing continuously. To meet the stricter requirements, the pace of development in pedestrian countermeasures is increasing rapidly. In the study, the tibia acceleration and knee bending angle failed to satisfy the performance rating aimed at Euro NCAP five stars after the lower legform impact test. Using Computer Aided Engineering (CAE) modeling, the performance of the energy absorber and lower stiffener was analyzed for knee bending angle, tibia acceleration, and knee shear displacement, and then the improvement of bumper structure for lower leg protection is given through a combination of material properties and design within current styling and packaging space. The legform impact test results demonstrated that the new bumper structure can get the higher score rating for pedestrian lower leg.","PeriodicalId":386083,"journal":{"name":"2011 International Conference on Mechatronic Science, Electric Engineering and Computer (MEC)","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115079640","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 : 2011-09-23DOI: 10.1109/MEC.2011.6025438
Guifen Chen, Shuwen Jiang
With the development of precision agriculture, environmental monitoring is significant. This paper describes how to design and implement a Multi-layer Soil temperature monitoring system based on WCDMA network and WEB technical integration. This System includes WCDMA developing module, multi-layer temperature sensors and a B/S model monitoring system depolied on server. Via 3G network to setup a link with temperature sensors and data server; while wireless moisture sensors send data into web server, some functions such as analysing data are implement on server. The experiment result explains that the WCDMA has resolved the problem which is the slow rate of transmission, the short distance of sending and the small storage of the the server. WCDMA network is appled in precision agriculture widly.
{"title":"Design and implement a B/S model monitoring system of Multi-layer Soil temperature based on WCDMA","authors":"Guifen Chen, Shuwen Jiang","doi":"10.1109/MEC.2011.6025438","DOIUrl":"https://doi.org/10.1109/MEC.2011.6025438","url":null,"abstract":"With the development of precision agriculture, environmental monitoring is significant. This paper describes how to design and implement a Multi-layer Soil temperature monitoring system based on WCDMA network and WEB technical integration. This System includes WCDMA developing module, multi-layer temperature sensors and a B/S model monitoring system depolied on server. Via 3G network to setup a link with temperature sensors and data server; while wireless moisture sensors send data into web server, some functions such as analysing data are implement on server. The experiment result explains that the WCDMA has resolved the problem which is the slow rate of transmission, the short distance of sending and the small storage of the the server. WCDMA network is appled in precision agriculture widly.","PeriodicalId":386083,"journal":{"name":"2011 International Conference on Mechatronic Science, Electric Engineering and Computer (MEC)","volume":"236 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123469247","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：