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2010 2nd IEEE International Conference on Information Management and engineering, ICIME 2010

作者： Luo, Gang Jiang, Youngmin Gao, Rong Liang, Hao Department of Mechanical Engineering Chengdu Electro-Mechanic College Chengdu 610031 China School of Automation Engineering University of Electronic Science and Technology Chengdu China

ISBN: (纸本)9781424452644

By the method of tangential velocity in the paper, The error model was established, the analysis software was developed, some error patterns and decisive parameters were analyzed, the measures to amend, additionally, were proposed .In order to solve the difficult problem of synthetic control for trajectory position and motion, studied the spatial and time characteristics of trajectory movement and the relation between geometric parameter and dynamic state parameter. The trajectory geometry functional, on the one hand it is not time-varying mapping, can be simplified through mathematical transformation, thus the space of geometric mapping can be extended. On the other hand, setting the time for the trajectory parameter of functional is about the displacement of a special motion equation. The functional structure of differential equation is the product of the geometric parameter functional and its time-derivative. Proposed a new method for trajectory control: tangential velocity method which with the motion parameter that controls the trajectory to achieve, with the variation of the reference to control the motion processing. After experiment and simulation, proved that is a good way to control the machine tool trajectory can achieve a comprehensive control for geometry and motion, reduce the computational error, improve the trajectory accuracy, and enhance the adaptive ability to environment for path planning. © 2010 IEEE.

关键词： Trajectories

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Medical image segmentation based on level set with new local fitting energy

Medical image segmentation based on level set with new local...

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2010 International Conference on Medical Image Analysis and Clinical Application, MIACA 2010

作者： Shen, Changchun Yu, Hengguo Liu, Xiaoyun Chen, Wufan School of Mathematics Science University Electronic Science and Technology of China Chengdu 611731 China College of Automation Engineering University Electronic Science and Technology of China Chengdu 611731 China

ISBN: (纸本)9781424480128

In this paper, we define the fitting energy by a new kernel function, which is to do in the range of an image what traditional filters do a small neighborhood of the same location. We combine the advantages of the LBF model and our model by taking domain and range kernel functions into account. The new level set method with domain and range kernel functions has been tested and assessed on different modalities of medical images. Experiments prove our simulation results demonstrate that our model has better segmentation results compared with the LBF model. © 2010 IEEE.

关键词： Numerical methods

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Preface

Communications and Control Engineering

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Communications and Control engineering 2011年第9780857292551期 vii-xi页

作者： Sun, Zhendong Ge, Shuzhi Sam College Automation Science & Engineering Center for Control and Optimization South China University of Technology Guangzhou510640 China Robotics Institue and Institute of Intelligent Systems and Information Technology University of Electronic Science and Technology of China Chengdu China Department of Electrical and Computer Engineering The National University of Singapore Singapore Singapore

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Interface Conversion Design Based on FPGA-Soft-Macro for EnDat2.2 and RS232/RS485

Interface Conversion Design Based on FPGA-Soft-Macro for EnD...

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International Conference on Electrical and Control engineering (ICECE)

作者： Yang Jian Wang Hanbin Yao Xangqian Wan Sanghong College of Nuclear technology and Automation Engineering Key Laboratory of Nuclear Techniques in Geosciences Chengdu University of Technology Chengdu China Chengdu Chuanxin Technology Industry Company Limited Chengdu China

The EnDat2.2 interface protocol developed by HEIDENHAIN company lately with its high-speed, bi-directional and pure digital features can meet the requirement of rapid responses, dramatically cut down the overall system's cost and greatly reduce the space requirements of the system's installation. Therefore, it is widely used in Numerical control system like CNC system and photoelectric encoder. China's first Micro-area X-ray Fluorescence Analyzer used a HEIDENHAIN encoder with this protocol to improve the three micro-platform positioning accuracy. However, considering the complexity of the connection interface to host computer and the high cost of dedicated interface card, the application adopted a new way to fulfill the serial data's transmission tasks rather than dedicated receiver IC. Based on soft-macro, as well as Field Programmable Gate Array FPGA, the idea here is to provide a general EnDat interface module which has the ability of realizing serial encoder data acquisition (RS232/RS485) of EnDat interface. This paper introduces the design idea partly, focuses on methods of the hardware and software design. It was proved by experiments that this design could implement data acquisition.

关键词： Field programmable gate arrays Clocks Protocols Data acquisition Computer numerical control Geology Bidirectional control

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A New Information Platform of Promoting Rural Development of Commerce & Trade Field

A New Information Platform of Promoting Rural Development of...

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The 22nd China Control and Decision Conference(2010年中国控制与决策会议)

作者： Bo Song Haiwei Zhang School of Network Engineering Chengdu University of Information Technology ChengDu 610225 China School of nuclear technology and automation engineering Chengdu University of Technology ChengDu

Based on the analysis of present rural development situations of commerce & trade field, this paper illuminates a new information platform, called Commerce & Trade Circulation Information Platform (CTCIP). The platform is not a simple software or a hardware, but a synthetic system, which integrates effectively government, enterprise and social resources and provides a new idea of promoting development of rural commerce & trade industry. The paper pays emphasis on introducing the construction plot, data flow and operation model of CTCIP, and the main components of CTCIP are given. At last, a summarizing is given.

关键词： the Market Project of Millions of Villages Branding Goods Commerce & Trade Circulation Information Platform (CTCIP)

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D - stability analysis for discrete system with time delay

D - stability analysis for discrete system with time delay

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2010 International Conference on Computer Design and Applications, ICCDA 2010

作者： Sun, Man Fu, Dong Lin, Peng Department of Automation and Engineering Northeastern University at Qinhuangdao Qinhuangdao China College of Information Science and Engineering Hebei University of Science and Technology Shijiazhuang China Institute of Astronautics and Aeronautics University of Electronic Science and Technology of China Chengdu China

ISBN: (纸本)9781424471638

By functional analysis and eigenvalue analysis methods in complex plane, several useful criteria are deduced which can guarantee that all the eigenvalues of discrete time-delay systems are located in a given region D(α, r) (with center (α,0) and radius r) in the cases that the system matrix A is diagonalizable and A is a normal matrix. These criteria are simple to complete and can be used to solve the D - stability analysis problem for discrete time-delay systems, therefore they can optimize the dynamic performance of the system. The system is D - stable if the criteria are satisfied. And the criteria also can be applied to the case of real plane. Two examples are included to illustrate the effectiveness and feasibility of the criteria. © 2010 IEEE.

关键词： Time delay

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A New Operation Model of E-Business

A New Operation Model of E-Business

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International Conference on Internet technology and Applications (iTAP)

作者： Song Bo Haiwei Zhang Chengdu University of Information Technology Chengdu Sichuan CN School of nuclear technology and automation engineering Chengdu University of Technology ChengDu China

This paper mainly analyzes the main models of E-business , discusses the current situations of E-business, and on the basis of the present situations of E-business, put forward a new operation model B2B2C (Business to Business to Consumer). Based on this model, some typical cases are given, so that present e-business enterprises can be enlightened. At last, a sum-up and prospect for e-business is given.

关键词： Biological system modeling Companies Production facilities Marketing and sales Internet Analytical models

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Data consolidation for land and resources in Chongqing

Data consolidation for land and resources in Chongqing

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2010 International Conference on Mechanic automation and Control engineering, MACE2010

作者： Cheng, Gang Yu, Haiyang Lu, Xiaoping Yang, Desheng Key Laboratory of Mine Spatial Information Technologies State Bureau of Surveying and Mapping Jiaozuo China College of Automation University of Electronic Science and Technology of China Chengdu China College of Information Engineering Chengdu University of Technology Chengdu China Information Center of Chongqing Land Resources and Housing Administration Bureau Chongqing China

ISBN: (纸本)9781424477388

There are a lot of land and resources data. However, it is difficult to share these data due to a variety of reasons such as lacking of unified standards, common semantics, diverse sources and independent management and etc. In this paper we analyze all data for land and resources, studies the consolidation method for mass data from multi-sources of land and resources, solve several key issues such as unified framework, data indexing, mass data storage etc. Finally three database including the original database, basic database, application database, are established and above the three databases a management system is built up. These efforts contributed to "a map" project's completion and the process of land and resources information of Chongqing Municipality. ©2010 IEEE.

关键词： Database systems

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Model of logical difference operation of variable precision upper approximation operator and grade lower approximation operator

Model of logical difference operation of variable precision ...

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International Conference on Measuring technology and Mechatronics automation, ICMTMA 2010

作者： Zhang, Xianyong Xiong, Fang Mo, Zhiwen College of Mathematics and Software Science Sichuan Normal University Chengdu Sichuan 610068 China Department of Information Engineering Sichuan Tianyi University Longquan Sichuan 610100 China College of Automation University of Electronic Science and Technology of China Chengdu Sichuan 610054 China

ISBN: (纸本)9780769539621

Precision and grade are two important quantitative indexes. The purpose of this paper is to combine precision and grade, and explore new extended rough set model. Based on logical difference operation of precision and grade, this paper proposes model of logical difference operation of variable precision upper approximation operator and grade lower approximation operator. In the new model, fundamental structure and properties are obtained by transformation formulas between variable precision approximations and graded approximations, furthermore regular algorithm and structural algorithm are proposed and analyzed. Finally a practical example is given to illustrate the model and the algorithms. The new model has extended variable precision rough set model, graded rough set model and classical rough set model, and so these models have obtained similar properties of approximation operators. © 2010 IEEE.

关键词： Rough set theory

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Product operation of grade lower approximation operator and grade upper approximation operator based on two parameters

Product operation of grade lower approximation operator and ...

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International Conference on Measuring technology and Mechatronics automation, ICMTMA 2010

ISBN: (纸本)9780769539621

Grade is an important quantitative index, and graded rough set model is an important improved rough set model. This paper is to explore product operation of grade approximation operators. Based on logical product operation, this paper proposes product operation of grade lower approximation operator and grade upper approximation operator based on two parameters. Essence, basic structure and properties are obtained. Macroscopic algorithm and structural algorithm are proposed and analyzed, and by comparison it obtains an important conclusion that structural algorithm has advantages in time complexity and space complexity. Finally an example is given to illustrate the product operation and its algorithms. © 2010 IEEE.

关键词： Rough set theory

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