Based on Takagi-Sugeno (T-S) fuzzy observer, present a new type fault diagnosis method for induction motor stator. The residuals using observer estimation output error generated, constitute effective criterion for fault diagnosis. At first, use the Lyapunov stability theory analysis the observer's stabilities, then set the observer pole configuration in the S plane of the designated area, The simulation results show that the method has stronger performance of fault diagnosis, and have good identification performance in full speed range.
{"title":"A Novel Method of Induction Motor Stator Fault Diagnosis","authors":"Hou Hai-liang, Yang Tong-guang","doi":"10.1109/ICDMA.2013.16","DOIUrl":"https://doi.org/10.1109/ICDMA.2013.16","url":null,"abstract":"Based on Takagi-Sugeno (T-S) fuzzy observer, present a new type fault diagnosis method for induction motor stator. The residuals using observer estimation output error generated, constitute effective criterion for fault diagnosis. At first, use the Lyapunov stability theory analysis the observer's stabilities, then set the observer pole configuration in the S plane of the designated area, The simulation results show that the method has stronger performance of fault diagnosis, and have good identification performance in full speed range.","PeriodicalId":403312,"journal":{"name":"2013 Fourth International Conference on Digital Manufacturing & Automation","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133484225","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}
Finite element model of diesel engine shafting and motor shafting were established. With finite element calculation, the first 5 order modal frequency and vibration shape of diesel engine shafting and motor shafting were obtained. Based on diesel engine shafting model and motor shafting model, hybrid power system shafting finite element model was established, and the first 10 order modal frequency and vibration shape were obtained. Calculation results show that every modal frequency of hybrid power system shafting is declined compared with ordinary power system. Reason for the decline is motor shafting modal frequency is significantly less than diesel engine shafting. The 1 order vibration shape of hybrid power system shafting is torsion vibration. Hybrid power system shafting vibration experiment table was established and shafting vibration testing were carried out. Torsion vibration experiment results show that f0 and 2f0 are two peak frequency of shafting torsion vibration frequency spectrum, shafting peak frequency is less than shafting 1 order modal frequency 212 Hz and shafting torsion resonance can be avoided. Bending vibration experiment results show that bending vibration energy is focuses in x direction and y direction. Hybrid power system axial vibration can be ignored.
{"title":"Hybrid Power System Shafting Vibration Characteristic","authors":"Huang Zhonghua, Xie Ya, Den Yi","doi":"10.1109/ICDMA.2013.157","DOIUrl":"https://doi.org/10.1109/ICDMA.2013.157","url":null,"abstract":"Finite element model of diesel engine shafting and motor shafting were established. With finite element calculation, the first 5 order modal frequency and vibration shape of diesel engine shafting and motor shafting were obtained. Based on diesel engine shafting model and motor shafting model, hybrid power system shafting finite element model was established, and the first 10 order modal frequency and vibration shape were obtained. Calculation results show that every modal frequency of hybrid power system shafting is declined compared with ordinary power system. Reason for the decline is motor shafting modal frequency is significantly less than diesel engine shafting. The 1 order vibration shape of hybrid power system shafting is torsion vibration. Hybrid power system shafting vibration experiment table was established and shafting vibration testing were carried out. Torsion vibration experiment results show that f0 and 2f0 are two peak frequency of shafting torsion vibration frequency spectrum, shafting peak frequency is less than shafting 1 order modal frequency 212 Hz and shafting torsion resonance can be avoided. Bending vibration experiment results show that bending vibration energy is focuses in x direction and y direction. Hybrid power system axial vibration can be ignored.","PeriodicalId":403312,"journal":{"name":"2013 Fourth International Conference on Digital Manufacturing & Automation","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133708222","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}
Hu Zhong-lu, Li Yue-lin, Dong Shi-tao, Zhang Dong-yu
The rapid prototyping development technology for the transient throttle controller based on the Motohawk development platform was introduced. The mathematical model was set up for the transient throttle controller. Based on it, a PID control algorithm was proposed and verified in MATLAB/SIMULINK. A rapid prototyping development platform was built up using MotoTron technology. The precise control was realized by the calibration test based on strategy transplant and download. The transient conditions established was produced in the end.
{"title":"The Development of Transient Throttle Controller Based on MotoTron Development Platform","authors":"Hu Zhong-lu, Li Yue-lin, Dong Shi-tao, Zhang Dong-yu","doi":"10.1109/ICDMA.2013.348","DOIUrl":"https://doi.org/10.1109/ICDMA.2013.348","url":null,"abstract":"The rapid prototyping development technology for the transient throttle controller based on the Motohawk development platform was introduced. The mathematical model was set up for the transient throttle controller. Based on it, a PID control algorithm was proposed and verified in MATLAB/SIMULINK. A rapid prototyping development platform was built up using MotoTron technology. The precise control was realized by the calibration test based on strategy transplant and download. The transient conditions established was produced in the end.","PeriodicalId":403312,"journal":{"name":"2013 Fourth International Conference on Digital Manufacturing & Automation","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131809168","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}
Power management technology is a fundamental issue in environmental vibration monitoring. In this paper, we propose a power management scheme using a MEMS inertial switch to minimize power consumption and maximize lifetime of environmental vibration monitoring system. The MEMS inertial switch integrates detecting and controlling systems with no power consumption. A prototype with unidirectional sensitivity is designed and fabricated based on bulk micromachining technology. The switch die (5.8×5.8×0.55mm3) is packaged and tested. As an 80g half-sine-wave acceleration was applied, the response time and contact time are about 0.37ms and 49ms, respectively. The contact resistance is no more than 6& Omega;. These indicate the switch has the advantages of miniature, high sensitivity and good contact effect which are suitable for the applications in power management of environmental vibration monitoring.
{"title":"MEMS Inertial Switch for Power Management of Environmental Vibration Monitoring","authors":"J. Fu, Dongling Li, Guoyin Wang, Di Wu","doi":"10.1109/ICDMA.2013.185","DOIUrl":"https://doi.org/10.1109/ICDMA.2013.185","url":null,"abstract":"Power management technology is a fundamental issue in environmental vibration monitoring. In this paper, we propose a power management scheme using a MEMS inertial switch to minimize power consumption and maximize lifetime of environmental vibration monitoring system. The MEMS inertial switch integrates detecting and controlling systems with no power consumption. A prototype with unidirectional sensitivity is designed and fabricated based on bulk micromachining technology. The switch die (5.8×5.8×0.55mm3) is packaged and tested. As an 80g half-sine-wave acceleration was applied, the response time and contact time are about 0.37ms and 49ms, respectively. The contact resistance is no more than 6& Omega;. These indicate the switch has the advantages of miniature, high sensitivity and good contact effect which are suitable for the applications in power management of environmental vibration monitoring.","PeriodicalId":403312,"journal":{"name":"2013 Fourth International Conference on Digital Manufacturing & Automation","volume":"155 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134452828","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}
Wu Chenxi, Ning Liwei, Jiang Rong, Wu Xing, Liu Junan
An approach is proposed for fault diagnosis of rolling element bearings using time domain features as inputs to the artificial neural network (ANN). The time domain features are extracted from the segments of the experimental dataset for known machine conditions. The dataset has been subjected to somewhat preprocessing previous to feature extraction. The ANN consists of five input nodes, one hidden layer with five nodes and four output nodes. Each of five input nodes represents root mean square, variance, skewness, kurtosis and normalized sixth central moment of the time domain vibration signals, respectively. Four binary nodes in the output layer specify the bearing condition: normal, outer race defect, inner race defect or ball defect. The ANN is trained using back propagation algorithm with a subset of the time domain features. The ANN is tested using the remaining set of the time domain features. Training and test success are used to evaluate efficiency of the presented method. The results indicate the effectiveness of the time domain features in diagnosis of bearing failures with high accuracy and low computation.
{"title":"Intelligent Identification of Bearing Faults Using Time Domain Features","authors":"Wu Chenxi, Ning Liwei, Jiang Rong, Wu Xing, Liu Junan","doi":"10.1109/ICDMA.2013.169","DOIUrl":"https://doi.org/10.1109/ICDMA.2013.169","url":null,"abstract":"An approach is proposed for fault diagnosis of rolling element bearings using time domain features as inputs to the artificial neural network (ANN). The time domain features are extracted from the segments of the experimental dataset for known machine conditions. The dataset has been subjected to somewhat preprocessing previous to feature extraction. The ANN consists of five input nodes, one hidden layer with five nodes and four output nodes. Each of five input nodes represents root mean square, variance, skewness, kurtosis and normalized sixth central moment of the time domain vibration signals, respectively. Four binary nodes in the output layer specify the bearing condition: normal, outer race defect, inner race defect or ball defect. The ANN is trained using back propagation algorithm with a subset of the time domain features. The ANN is tested using the remaining set of the time domain features. Training and test success are used to evaluate efficiency of the presented method. The results indicate the effectiveness of the time domain features in diagnosis of bearing failures with high accuracy and low computation.","PeriodicalId":403312,"journal":{"name":"2013 Fourth International Conference on Digital Manufacturing & Automation","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134487518","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}
Y. Ming, Zhu Weiyao, Song Hong-qing, Yang Jiaosheng
A mathematical model for transport of coal bed methane(CBM) was presented, taking into account low-velocity non-Darcy flow behavior and coupling of methane desorption from coal matrix and diffusion from matrix into cleats. Under several simplifying assumptions, a simple calculation method for control area of single wells was proposed. Low-velocity non-Darcy flow behavior was characterized by pseudo threshold pressure gradient (PTPG). Numerical results show that both PTPG and desorption rate have a significant impact on determination of control radius. PTPG has a negative effect on the deployment of the peripheral reserves. Increasing PTPG would result in fewer control area. In the contrast, increasing desorption rate would lead to larger control area. The calculation method would provide engineers a better understanding of development of CBM.
{"title":"Mathematical Model for Low-Velocity Flow of Coal Bed Methane in Low-Permeability Reservoirs","authors":"Y. Ming, Zhu Weiyao, Song Hong-qing, Yang Jiaosheng","doi":"10.1109/ICDMA.2013.182","DOIUrl":"https://doi.org/10.1109/ICDMA.2013.182","url":null,"abstract":"A mathematical model for transport of coal bed methane(CBM) was presented, taking into account low-velocity non-Darcy flow behavior and coupling of methane desorption from coal matrix and diffusion from matrix into cleats. Under several simplifying assumptions, a simple calculation method for control area of single wells was proposed. Low-velocity non-Darcy flow behavior was characterized by pseudo threshold pressure gradient (PTPG). Numerical results show that both PTPG and desorption rate have a significant impact on determination of control radius. PTPG has a negative effect on the deployment of the peripheral reserves. Increasing PTPG would result in fewer control area. In the contrast, increasing desorption rate would lead to larger control area. The calculation method would provide engineers a better understanding of development of CBM.","PeriodicalId":403312,"journal":{"name":"2013 Fourth International Conference on Digital Manufacturing & Automation","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115556983","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}
Under environment of Visual Studio 2010, the network teaching platform of college physical experiment course suiting for credit system is designed and built with ASP.NET language(C# language is used at backstage), which can offer college physical experimental course a brand-new and fully open teaching mode. Via online course selection system, students can choose experimental content, appoint experimental time and select teacher independently. The network teaching platform constructs an open learning environment for students which make the college physical experimental teaching expended both in time and space. With influence and radiation effect of teaching system of the network teaching platform, the college physical experimental course can get shared teaching resources that teachers can reference for teaching, and the students can also get a self-learning environment.
在Visual Studio 2010环境下，利用ASP设计并构建了适合学分制的大学物理实验课程网络教学平台。NET语言(后台使用c#语言)，为大学物理实验课程提供了一种全新的、完全开放的教学模式。通过在线选课系统，学生可以自主选择实验内容、指定实验时间和选择教师。网络教学平台为学生构建了一个开放的学习环境，使大学物理实验教学在时间和空间上进行了拓展。在网络教学平台教学系统的影响和辐射作用下，大学物理实验课程可以获得可供教师教学参考的共享教学资源，也可以获得学生自主学习的环境。
{"title":"Network Teaching Platform of College Physical Experiment Course Suiting for Credit System","authors":"Y. Lihua, Zhao Wei, Tian Yong, Liao Hong","doi":"10.1109/ICDMA.2013.194","DOIUrl":"https://doi.org/10.1109/ICDMA.2013.194","url":null,"abstract":"Under environment of Visual Studio 2010, the network teaching platform of college physical experiment course suiting for credit system is designed and built with ASP.NET language(C# language is used at backstage), which can offer college physical experimental course a brand-new and fully open teaching mode. Via online course selection system, students can choose experimental content, appoint experimental time and select teacher independently. The network teaching platform constructs an open learning environment for students which make the college physical experimental teaching expended both in time and space. With influence and radiation effect of teaching system of the network teaching platform, the college physical experimental course can get shared teaching resources that teachers can reference for teaching, and the students can also get a self-learning environment.","PeriodicalId":403312,"journal":{"name":"2013 Fourth International Conference on Digital Manufacturing & Automation","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115010135","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}
The paper talks about a research on a fast growing Chinese city. It reviews the international urban planning competition for the new urban area in Shunde, and compares the different technical approaches to look at the future development of a post-industrial city. To compare them with a study on the current local urban issues, and to find out the philosophies behind the morphologies, is the main purpose of the paper.
{"title":"Revising Shunde: The Different Technical Approaches to the Future of a Large Chinese City","authors":"Haohao Xu","doi":"10.1109/ICDMA.2013.276","DOIUrl":"https://doi.org/10.1109/ICDMA.2013.276","url":null,"abstract":"The paper talks about a research on a fast growing Chinese city. It reviews the international urban planning competition for the new urban area in Shunde, and compares the different technical approaches to look at the future development of a post-industrial city. To compare them with a study on the current local urban issues, and to find out the philosophies behind the morphologies, is the main purpose of the paper.","PeriodicalId":403312,"journal":{"name":"2013 Fourth International Conference on Digital Manufacturing & Automation","volume":"56 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124717001","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}
Turnout is a weak link in railway track and its structure is complex, so it is necessary to use advanced technology to monitor rail damage of the turnout zone. This paper studied on various existing monitoring methods, and integrated three methods to realize the compound monitoring of rail damage, i.e. fiber grating, optical imaging and Lamb guided wave. Both the relation between parameters of these monitoring technologies and the interaction between them were considered, data obtained from different information sources are proceeded comprehensively to get the accurate estimation and evaluation of the state of the detected object. Based on the workflow of this monitoring system, it is divided into five functional modules: 1)video detection systems, fiber optic detection system, Lamb guided wave detection system, 2) comprehensive analysis, 3) management of maintenance plan, 4) knowledge base/expert database, 5) reporting system. This monitoring system is installed at railway field and preliminarily tested to verify its feasibility and reliability.
{"title":"Integrated Monitoring System for Rail Damage in High Speed Railway Turnout","authors":"Rong Chen, Ping Wang, Hao Xu","doi":"10.1109/ICDMA.2013.167","DOIUrl":"https://doi.org/10.1109/ICDMA.2013.167","url":null,"abstract":"Turnout is a weak link in railway track and its structure is complex, so it is necessary to use advanced technology to monitor rail damage of the turnout zone. This paper studied on various existing monitoring methods, and integrated three methods to realize the compound monitoring of rail damage, i.e. fiber grating, optical imaging and Lamb guided wave. Both the relation between parameters of these monitoring technologies and the interaction between them were considered, data obtained from different information sources are proceeded comprehensively to get the accurate estimation and evaluation of the state of the detected object. Based on the workflow of this monitoring system, it is divided into five functional modules: 1)video detection systems, fiber optic detection system, Lamb guided wave detection system, 2) comprehensive analysis, 3) management of maintenance plan, 4) knowledge base/expert database, 5) reporting system. This monitoring system is installed at railway field and preliminarily tested to verify its feasibility and reliability.","PeriodicalId":403312,"journal":{"name":"2013 Fourth International Conference on Digital Manufacturing & Automation","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122904029","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}
Aiming at entrance bucket at different installation site, inner flow field of diffuser was simulated and analyzed, get graphs of static pressure coefficient (Cp), atmospheric pressure coefficient (Cpa) and efficiency (n). Though analysis and get rule of performance of diffuser aim at entrance bucket at different installation site, the rule provides theoretical foundation on design of fanner diffuser.
{"title":"Numerical Analysis on Performance of Diffuser Aim at Entrance Bucket at Different Installation Site","authors":"Zhu Xiuchuan","doi":"10.1109/ICDMA.2013.199","DOIUrl":"https://doi.org/10.1109/ICDMA.2013.199","url":null,"abstract":"Aiming at entrance bucket at different installation site, inner flow field of diffuser was simulated and analyzed, get graphs of static pressure coefficient (Cp), atmospheric pressure coefficient (Cpa) and efficiency (n). Though analysis and get rule of performance of diffuser aim at entrance bucket at different installation site, the rule provides theoretical foundation on design of fanner diffuser.","PeriodicalId":403312,"journal":{"name":"2013 Fourth International Conference on Digital Manufacturing & Automation","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123838179","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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