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Development of linear servo control system for CNC machine tool based on DSP

Development of linear servo control system for CNC machine t...

引用

2011 International Conference on Mechatronic Science, Electric Engineering and Computer, MEC 2011

作者： Xu, Kaiyun Li, Ning Lin, Jian He, Chuan School of Automation Nanjing Institute of Technology Nanjing China Jiangsu Key Laboratory of Advanced Numerical Control Technology Nanjing Institute of Technology Nanjing China School of Mechanical Engineering Changzhou University Changzhou China

ISBN: (纸本)9781612847221

The linear servo systems have the advantages of high velocity, precise servo feeding, excellent stability and rapidly dynamic performance, which can be used as the most promising high-performance feeding system for CNC (Computer numerical control) machine tools. According to the index demands of CNC machine tool for linear feeding system, the corresponding control system based on DSP (Digital Signal Processor) is designed in detail. The system employs DSP-TMS320F2812 as the control core, and an Intelligent Power Module (IPM) as the power driven circuit. This paper will mainly focus on the hardware structure and software program of linear servo control system, and the debugging work and experimental process are also introduced. The satisfactory results demonstrate that the proposed linear servo control system is feasible and reasonable, which can be applied in the CNC machine tools. © 2011 IEEE.

关键词： Computer control systems

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Research on the driving system of Hybrid Electric Motorcycle

Research on the driving system of Hybrid Electric Motorcycle

引用

International Conference on Electric Information and control Engineering

作者： Xiao, Ping Shi, Peicheng School of Mechanical and Automotive Engineering Anhui Polytechnic University Wuhu Nostate 241000 China Anhui Key Laboratory of Advanced Numerical Control and Servo Technology Wuhu Nostate 241000 China

ISBN: (纸本)9781424480395

The Due to its wide use, the motorcycle is one of the main problems leading to environment pollution and energy crisis in spite of its low emission and low oil consumption. However, the research on it has not been attached enough importance up to now both at home and abroad. On the basis of learning from the successful experience of Hybrid Electric Vehicle, this thesis studied the driving system of Hybrid Electric Motorcycle, which is the key technology of Hybrid Electric Motorcycle's development. In this study, research on driving system of Brushless DC Motor of 800W was conducted. In hardware design, the 80C196KC SCM was selected as the processor, MOSFET, as electron power tube and IR2101, as the driving CMOS chip respectively. In software design, closed loop control was achieved by software filtering Algorithm of avoiding pulse disturbance and averaging and controlling Algorithm of fuzzy PI. The experiment results indicated that the designed driving system could meet the working requirements of motorcycles, so this study lays a solid foundation for further development of Hybrid Electric Motorcycle. © 2011 IEEE.

关键词： Brushless DC motors

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Combustion synthesis and photoluminescent properties of Ca 3((P,V)O4)12: Eu3+ nanophosphor

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作者： Wang, Xiao-Jun Zhou, Xiao-Chun Key Laboratory of Numerical Control Technology Mechanical and Electronic Department Guangdong Polytechnic Normal University Guangzhou 510635 China School of Chemistry and Chemical Engineering Jinggangshan University Ji'an Jiangxi 343009 China

ISBN: (纸本)0878492119

A simple combustion process has been proposed to systematically synthesize Ca3((P, V)O4)2: Eu3+. All the Ca3((P, V)O4)2: Eu3+ products were characterized by x-ray diffraction (XRD), scanning electron microscopy (SEM) and fluorescence spect rophotometer. The results indicate that Ca3((P, V)O4)2: Eu3+ phosphor particles is special morphology with quadrate of length 2.5 μm and breadth 1 μm. From the photoluminescence spectra for Ca3((P, V)O4)2: Eu3+, the remarkable emission transition 5D0 - 7F0 are assigned to Eu3+ ions substituted for Ca2+, and the most intense emission transition 5D 0 - 7F2 indicates at noncenter symmetrical environment for Eu3+ ions. It was observed that the spectral features possess sharp and bright emission for a red emitting nanophosphors potential applications. © (2011) Trans Tech Publications.

关键词： Scanning electron microscopy

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Diagnostic of microplasma reactor for scanning plasma etching

Diagnostic of microplasma reactor for scanning plasma etchin...

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International Solid-State Sensors, Actuators and Microsystems Conference

作者： Wang, H. Tong, Y.H. Wen, L. Li, Z. School of Mechanical and Automotive Engineering Anhui Polytechnic University Anhui Wuhu China Anhui Key Laboratory of Advanced Numerical Control and Servo Technology Wuhu Anhui China Department of Precision Machinery and Precision Instrumentation University of Science and Technology of China Hefei China

ISBN: (纸本)9781457701573

We report electrical properties and Optical Emission Spectrum of DC-Driven Microplasma Reactor for Scanning Plasma Etching in pure SF6 environment with different device size between 5-12 kPa gas pressures. The Microplasma Reactor is consists of metal-insulator-metal sandwich structure, and with an inverted pyramidal shape hollow cathode. A diagnostic system is design to measure the V-I curve and OES (optical emission spectrum) of the microplasma. The result shows that the discharge current is increased with the gas pressure and applied voltage, the density of the active silicon etchant F atom emission spectrum line is increased with the decrease of the device size. These results confirm that the Microplasma Reactor is suitable for Scanning Plasma Etching of silicon. © 2011 IEEE.

关键词： Scanning

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Mechanical structure of intelligent underwater dexterous hand

Mechanical structure of intelligent underwater dexterous han...

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International Conference on Information and Automation

作者： Xu, De-Zhang Yang, Ming Zhang, Qing Wang, Bu Yun Ge, Yun Jian Anhui Key Laboratory of Advanced Numerical Control and Servo Technology Anhui Polytechnic University WuHu City AnHui Province241000 China Institute of Intelligent Machines Chinese Academy of Sciences HeFei City AnHui Province 230031 China

ISBN: (纸本)9781457702686

In order to realize the requirements of underwater partly automatic work, the research group developed an underwater working dexterous hand. This dexterous hand adopted three fingers and six joints. The six joints were all driven by fluid power, among which three root joints shared one fluid motor, and the other three finger joints were driven by three fluid cylinder respectively. In order to obtain comparatively comprehensive information on the operating environment, the dexterous hand installed a six-dementional wrist force sensors, three four-dimensional finger force sensors, three ultrasonic sensors, and one vision sensor. This article focused on the mechanical structure of the dexterous hand and equipment of sensors. © 2011 IEEE.

关键词： Robotic arms

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Image recognition technology in intelligent cotton harvesting machine

Image recognition technology in intelligent cotton harvestin...

引用

2011 International Conference on Information technology, Computer Engineering and Management Sciences, ICM 2011

作者： Wang, Mulan Li, Xiaoxia Liu, Kun Jiang, Rong Jiangsu Key Laboratory of Advanced Numerical Control Technology Nanjing Institute of Technology Nanjing 211167 China School of Mechanical Engineering Changzhou University Changzhou 213016 China School of Automation Nanjing Institute of Technology Nanjing 211167 China School of Mechanical Engineering Nanjing Institute of Technology Nanjing 211167 China

ISBN: (纸本)9780769545226

In view of the functional demands of the electrical control system for the intelligent cotton harvesting machine, the machine vision technology is employed. A cotton recognition method is proposed based on Hough transform. When the cottons gather together or overlap, the image data are partially lost or incomplete. To precisely identify the hidden cotton in the natural environment, firstly the image is segmented by R-B channel in RGB color model to reduce the computational complexity. Then the minimum external rectangle is obtained by labeling its region. Finally, contour information is acquired through the boundary trace approach in the effective region and the randomized Hough transform (RHT) method is realized according to the mathematic model of cotton contour. Results show that the recognition method is feasible when the amount of cotton contour information is lost less than 50%, which can meet the accuracy and speed requirements of target recognition for the intelligent cotton harvesting machine. © 2011 IEEE.

关键词： Cotton

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Study on the Characteristics of Lithium Batteries with Different Load

Study on the Characteristics of Lithium Batteries with Diffe...

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2011 cross Strait Quad-Regional Radio Science and Wireless technology Conference(CSQRWC 2011)(2011年海峡两岸四地无线电科技研讨会)

作者： Ding Zuo wu Qu Min Jiangsu Key Laboratory of Advanced Numerical Control Technology Nanjing Institute of Technology 21 Department of Vehicle Engineering Nanjing Institute of Technology 211167 Nanjing China

ISBN: (纸本)9781424497928

Lead-acid batteries are widely used as backup power source in wireless base stations and as power source in electric *** determine the lithium battery's terminal limited discharge voltage and internal resistance with different loads, four 3.2V/60Ah lithium batteries are put in series to form a battery pack in tests. The lithium battery pack terminal voltage, current and overall internal resistance were recorded with the discharge time. By analyzing data from the tests with MATLAB, the lithium battery pack capacity, energy consumed by the load and the internal resistance were determined. The lithium battery pack t-U, t—I, t-AU/△t and t-ro graphs are drawn. From the graphs, it is shown that the limited discharge voltage of a single lithium battery is approximately 2.75V, and the internal resistance of a single lithium battery is approximately 0.75mii. The lithium battery pack current and the voltage change trends are the same when the load is constant, and the higher the load the less capacity the lithium battery pack can release. The energy consumed by internal resistance to the energy that lithium battery releases is higher as the load increases

关键词： electric vehicle lithium battery internal resistance discharge capability battery manage system

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Development of FPGA-based arithmetic module in CNC system

Development of FPGA-based arithmetic module in CNC system

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International Conference on Mechatronic Science, Electric Engineering and Computer

作者： Mulan Wang Xinghua Zhu Baosheng Wang Xiaoxia Li Jiangsu Key Laboratory of Advanced Numerical Control Technology Nanjing Institute of Technology Nanjing China School of Mechanical Engineering Changzhou University Changzhou China

Many complex computational problems have to be overcome in the Computer numerical control (CNC) system, such as tool compensation calculation, contour interpolation, speed decomposition, position control and so on. If all the functions are accomplished by software, the corresponding execution time will affect the velocity of the CNC system. This paper has put forward a scheme of software hardening technique based on FPGA (Flied Programmable Gate Array), and developed an independent arithmetic calculating module for CNC system to improve the feed-rate of machine tool. VHSIC Hardware Description Language (VHDL) is adopted in Quartus II 9.0 development environment, based on FPGA chip of Altera company CYCLONE II series. Several algorithm operation processes relating to complex calculation are introduced in detail, such as addition, subtraction, multiplication and division operation of floating-point numbers. The simulation results prove that the proposed design methods of the arithmetic module are feasible and reasonable, which can also enhance the portability and applicability of floating-point calculating module in CNC system.

关键词： Computer numerical control Field programmable gate arrays Integrated circuit modeling Software Simulation Registers Hardware

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Configuration optimization of physical prototype for 6–3–3 parallel mechanism

Configuration optimization of physical prototype for 6–3–3...

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International Conference on Electrical and control Engineering (ICECE)

作者： Hong Gao Ping Xiao Haitao Zhang School of Mechanical and Automotive Engineering Anhui Polytechnic University Wuhu China Anhui Key Laboratory of Advanced Numerical Control and Servo Technology Wuhu China

Configuration optimization of physical prototype for 6-3-3 parallel mechanism was modeled mathematically, and then an idea of embedding finite element method in optimization algorithm was presented for solving optimizing model. In optimization design toolbox of ANSYS software, configuration optimization of the parts for the mechanism was realized by means of establishing parameterized model with parts, defining design variables, restraint and objective function. The investigation provided theoretical basis for lightweight part design with physical prototype of the parallel mechanism.

关键词： Optimization Mathematical model Finite element methods Prototypes Stress Analytical models Software

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Image Recognition technology in Intelligent Cotton Harvesting Machine

Image Recognition Technology in Intelligent Cotton Harvestin...

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International Conference on Information technology, Computer Engineering and Management Sciences (ICM)

作者： Mulan Wang Kun Liu Xiaoxia Li Rong Jiang Jiangsu Key Laboratory of Advanced Numerical Control Technology Nanjing Institute of Technology Nanjing China School of Automation Nanjing Institute of Technology Nanjing China School of Mechanical Engineering Changzhou University Changzhou China School of Mechanical Engineering Nanjing Institute of Technology Nanjing China

关键词： Cotton Transforms Joining processes Robots Machine vision Image color analysis Image recognition

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