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International Conference on Digital Manufacturing and Automation最新文献

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Detection of Billet Character in Complex Production Line Scene 复杂生产线场景中钢坯特征的检测
International Conference on Digital Manufacturing and Automation Pub Date : 1900-01-01 DOI: 10.1109/ICDMA.2012.80
Hanyu Hong, Zhejun Yu, Xiuhua Zhang
{"title":"Detection of Billet Character in Complex Production Line Scene","authors":"Hanyu Hong, Zhejun Yu, Xiuhua Zhang","doi":"10.1109/ICDMA.2012.80","DOIUrl":"https://doi.org/10.1109/ICDMA.2012.80","url":null,"abstract":"Character information is hard to detect in billet scene images by CCD camera. In this paper, we present a method for detection of billet characters from measurements of recursive segmented image. This recursive segmented method can be used in a wide variety of billet scenes. According to high temperature and complex scene in the rolling line, we use an effective clustering and projection characteristics to determine the terminal condition of recursive segmentation. Then we can label character candidate regions in turn by this effective characteristics, and select the regions we want to achieve. The experiments show that this method makes full use of the characteristics of region and clustering. It can improve the quality of detection, and the detection result meets the need of practical application.","PeriodicalId":393655,"journal":{"name":"International Conference on Digital Manufacturing and Automation","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114415876","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}
引用次数: 2
Study on External Characteristics of Magnetically Controlled Shape Memory Alloy under Different Force 磁控形状记忆合金在不同力作用下的外特性研究
International Conference on Digital Manufacturing and Automation Pub Date : 1900-01-01 DOI: 10.1109/ICDMA.2012.193
Jun Lu, Ling Wang
{"title":"Study on External Characteristics of Magnetically Controlled Shape Memory Alloy under Different Force","authors":"Jun Lu, Ling Wang","doi":"10.1109/ICDMA.2012.193","DOIUrl":"https://doi.org/10.1109/ICDMA.2012.193","url":null,"abstract":"Magnetically controlled shape memory alloy (MSMA) can change its shape when it is exposed to a magnetic field, which provides a new way to produce linear motion and force. The MSMA material has another property yet: the MSMA material can change its magnetic property when it is subjected to mechanical force, which is known as inverse characteristics of MSMA. In this paper, a testing device which is used to testing external characteristics of MSMA material is presented. When the MSMA material is mechanically compressed by static force, a larger variation of magnetic flux density can be caused; a higher induced voltage is output under the action of impact force; the change laws of induced voltage peak-peak are studied under different input conditions (frequency, exciting force). The experimental results lay a foundation for MSMA sensor application.","PeriodicalId":393655,"journal":{"name":"International Conference on Digital Manufacturing and Automation","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117146861","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}
引用次数: 0
Design of School News information System for CZ College CZ学院校报信息系统设计
International Conference on Digital Manufacturing and Automation Pub Date : 1900-01-01 DOI: 10.1109/ICDMA.2012.79
Jianguo Yu, Huaqing Min, Zhipin Cao, Shaowu Peng, Shichao Hu
{"title":"Design of School News information System for CZ College","authors":"Jianguo Yu, Huaqing Min, Zhipin Cao, Shaowu Peng, Shichao Hu","doi":"10.1109/ICDMA.2012.79","DOIUrl":"https://doi.org/10.1109/ICDMA.2012.79","url":null,"abstract":"School news information system breaks through and exceeds the traditional news communication conception, and provides audiences with new taste in vision, hearing and sense. CZ college has excellent conditions in many aspects, but lack of school news information system has become the development obstacle of CZ college. School news information system for CZ college is regarded as research object in the paper, and a school news information system is designed to satisfy the demand and characteristic of CZ college. System architecture of school news information system for CZ college is designed, and system architecture figure is finished. The function of school news information system for CZ college is designed, and the function tree is established, the function model is set up with IDEF0 method. The database is design based on above result, and database conception design and logic design are implemented, and physical design is discussed.","PeriodicalId":393655,"journal":{"name":"International Conference on Digital Manufacturing and Automation","volume":"122 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121806495","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}
引用次数: 0
Trajectory Comprehensive Analysis on Double Eccentric Wheel Drive System 双偏心轮驱动系统轨迹综合分析
International Conference on Digital Manufacturing and Automation Pub Date : 1900-01-01 DOI: 10.1109/ICDMA.2012.233
Q. Qu, Shaoqing Wang, T. Sun, H. Yu
{"title":"Trajectory Comprehensive Analysis on Double Eccentric Wheel Drive System","authors":"Q. Qu, Shaoqing Wang, T. Sun, H. Yu","doi":"10.1109/ICDMA.2012.233","DOIUrl":"https://doi.org/10.1109/ICDMA.2012.233","url":null,"abstract":"According to the basic principle of mechanical motion, the law of motion of the double eccentric wheel drive is derived. The motion equation is derived according to the characteristics of eccentric. The comprehensive analysis of the system trajectory is conducted. The basic parameters (eccentricity, deviation angle, etc) of double eccentric on the influence of the trajectory are studied. The characteristic of the double eccentric wheel mechanism is analyzed as the unidirectional intermittent motion mechanism. The relationship between the characteristic of the unidirectional intermittent motion and the design of parameters is revealed. It is proved that the double eccentric instead of two degrees of freedom drive is feasible. The synchronization of system is effectively solved. It provided theoretical support for selection for engineering design.","PeriodicalId":393655,"journal":{"name":"International Conference on Digital Manufacturing and Automation","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126691707","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}
引用次数: 1
Progress in Numerical Simulation of High Entrained Air-Water Two-Phase Flow 高夹带气-水两相流数值模拟研究进展
International Conference on Digital Manufacturing and Automation Pub Date : 1900-01-01 DOI: 10.1109/ICDMA.2012.148
Xiangju Cheng, Xuewei Chen
{"title":"Progress in Numerical Simulation of High Entrained Air-Water Two-Phase Flow","authors":"Xiangju Cheng, Xuewei Chen","doi":"10.1109/ICDMA.2012.148","DOIUrl":"https://doi.org/10.1109/ICDMA.2012.148","url":null,"abstract":"The progress of numerical simulation for high entrained gas-liquid two phase flow were summarized and analyzed. The results show that the Euler-Euler method is the most suitable for the air-water two-phase flow. The advantages and disadvantages of three multiphase flow models (VOF, Mixture and Eulerian model) are analyzed and the results show that the Eulerian model is most popular and accurate for simulation the strong turbulent air-water two-phase flow, especially needing to consider the conversion of continuous and discrete phase. The coupled Eulerian model and mixture turbulence model is the best choice for simulation the flow field on the strong air entrained flow in hydraulic engineering.","PeriodicalId":393655,"journal":{"name":"International Conference on Digital Manufacturing and Automation","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116752438","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}
引用次数: 7
Positioning Precision and Impact Force Control of Segment Erector for Shield Tunneling Machine 盾构机管片竖立机定位精度及冲击力控制
International Conference on Digital Manufacturing and Automation Pub Date : 1900-01-01 DOI: 10.1109/ICDMA.2012.145
Lintao Wang, Guofang Gong, Hu Shi, Dianqing Hou
{"title":"Positioning Precision and Impact Force Control of Segment Erector for Shield Tunneling Machine","authors":"Lintao Wang, Guofang Gong, Hu Shi, Dianqing Hou","doi":"10.1109/ICDMA.2012.145","DOIUrl":"https://doi.org/10.1109/ICDMA.2012.145","url":null,"abstract":"This paper deals with the control system of the segment erector of a shield tunneling machine and reducing the steady-state error and impact force during the positioning process. A segment erector with six degrees of freedom driven by electro-hydraulic system is designed, and the segment erecting process is introduced. The kinematics and dynamics models, as well as the mathematical model of the electro-hydraulic system are proposed to facilitate the positioning process and joint force analysis. Three different segment positioning control strategies are employed separately, and comparisons are made in terms of precision and impact force. Special reference speed and displacement/angle run curves are selected to control the segment positioning process. Simulations are carried out to calculate the impact force and positioning error. The simulation results verify the validity of each proposed control system.","PeriodicalId":393655,"journal":{"name":"International Conference on Digital Manufacturing and Automation","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114642338","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}
引用次数: 2
Absolute Calibration of BOC Navigation Signal Transmission Channel BOC导航信号传输信道的绝对校准
International Conference on Digital Manufacturing and Automation Pub Date : 1900-01-01 DOI: 10.1109/ICDMA.2012.37
Xiao-zhun Cui, Hong Mi, Yi Li, Qingjun Liu
{"title":"Absolute Calibration of BOC Navigation Signal Transmission Channel","authors":"Xiao-zhun Cui, Hong Mi, Yi Li, Qingjun Liu","doi":"10.1109/ICDMA.2012.37","DOIUrl":"https://doi.org/10.1109/ICDMA.2012.37","url":null,"abstract":"An absolute calibrate of BOC signal transmitting channel on navigation satellite based on software defined radio is addressed. At first, the BOC navigation signal and the pulse per second (PPS) generated by navigation time keeping system are sampled synchronously. After the sampling data of BOC signal is preprocessed, a serial-to-parallel transform is done for the intermediate frequency carried BOC signal data, the high rate data stream is converted into several low rate data streams. Parallel capture of code phase is done and the pesudocode starting point of each data stream can be gotten. With sampling data of PPS, the start points of the absolute delay can be decided. Integrating with the calibration delay of the preprocessing, time division processing, test cables and attenuator, the absolute delay of BOC navigation signal for transmitting channel is obtained. The simulated result indicates the precision of the calibrated algorithm is less than one sample period.","PeriodicalId":393655,"journal":{"name":"International Conference on Digital Manufacturing and Automation","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114691967","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}
引用次数: 0
Research on Simulation Calculation of Kinematic Accuracy Reliability for Folding and Deploying Mechanism Considering Gaps of Kinematic Pair 考虑运动副间隙的折叠展开机构运动精度可靠性仿真计算研究
International Conference on Digital Manufacturing and Automation Pub Date : 1900-01-01 DOI: 10.1109/ICDMA.2012.166
Ping Qian, Wenhua Chen, Bingbin Zhu, Jun Pan, Ming Hu
{"title":"Research on Simulation Calculation of Kinematic Accuracy Reliability for Folding and Deploying Mechanism Considering Gaps of Kinematic Pair","authors":"Ping Qian, Wenhua Chen, Bingbin Zhu, Jun Pan, Ming Hu","doi":"10.1109/ICDMA.2012.166","DOIUrl":"https://doi.org/10.1109/ICDMA.2012.166","url":null,"abstract":"For evaluation problems of kinematic accuracy reliability for folding and deploying mechanism under the condition of small sample, the continuous contact effective coupling model considering gaps of kinematic pair is built by using \"effective length model\" theory; Based on the proposed kinematics model of folding and deploying mechanism, simulation calculation method of mechanism kinematic accuracy reliability is proposed by the Monte-Carlo method, kinematic accuracy reliability for folding and deploying mechanism of certain type missile wing is calculated, the attained reliability is 4.87% lower than that under condition of not considering gaps of kinematic pair. The calculation result shows that the reliability obtained by the method proposed in this paper is more closely to the engineering practice.","PeriodicalId":393655,"journal":{"name":"International Conference on Digital Manufacturing and Automation","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117283570","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}
引用次数: 0
Study of High-Speed Pseudo-random Code Generator Whose Sampling Interval is Not 2i 采样间隔非2i的高速伪随机码发生器研究
International Conference on Digital Manufacturing and Automation Pub Date : 1900-01-01 DOI: 10.1109/ICDMA.2012.189
Zhanfeng Zhao, Wenlian Yu, Zhiquan Zhou, Haiyan Yu
{"title":"Study of High-Speed Pseudo-random Code Generator Whose Sampling Interval is Not 2i","authors":"Zhanfeng Zhao, Wenlian Yu, Zhiquan Zhou, Haiyan Yu","doi":"10.1109/ICDMA.2012.189","DOIUrl":"https://doi.org/10.1109/ICDMA.2012.189","url":null,"abstract":"This paper presents a new method for high-speed generation of pseudo-random code, which is based on sampling and parallel-to-serial conversion. This method can be used in situation that the sampling interval does not equal to , which increases the sampling selectivity and system adaptability. Finally, we verify the algorithm based on FPGA and the result is consistent with our prediction.","PeriodicalId":393655,"journal":{"name":"International Conference on Digital Manufacturing and Automation","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127224703","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}
引用次数: 0
Composite Solid Plane to Simulate the Frequency Response of Pavement 复合实体面模拟路面频响
International Conference on Digital Manufacturing and Automation Pub Date : 1900-01-01 DOI: 10.1109/ICDMA.2012.69
Jianbo Li, Peng Cao, Chao Zhang
{"title":"Composite Solid Plane to Simulate the Frequency Response of Pavement","authors":"Jianbo Li, Peng Cao, Chao Zhang","doi":"10.1109/ICDMA.2012.69","DOIUrl":"https://doi.org/10.1109/ICDMA.2012.69","url":null,"abstract":"The pavement will afford the dynamic vehicle loading during using period, so it is necessary to analyze the dynamic response of pavement in order to predict pavement durable function. the most important part of pavement dynamic analysis is frequency and spectrum calculation, which is also the first part of pavement dynamic simulation. Based on composite plane theory, the pavement structure widely used in China has been proposed as a composite plane with 6 layers, and been performed through linear perturbation and frequency analysis using three-dimension Finite element method. As to get the more accurate pavement dynamic results, the initial vehicle loading with magnitude 0.7Mpa has been implemented on the wheel trace, which can make the successive frequency analysis more reasonable. the method presented in this paper has supported a feasible standard for solving this kinds of problem.","PeriodicalId":393655,"journal":{"name":"International Conference on Digital Manufacturing and Automation","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122941672","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}
引用次数: 1
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