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Wireless remote monitoring system for the AGC svibration fault of rolling mill

Journal of Applied Sciences 2013年第21期13卷 4875-4880页

作者： Gao, Yan Jin, Baoquan Zhang, Hongjuan College of Electrical and Power Engineering Taiyuan University of Technology 030024 Taiyuan China Key Lab of Advanced Transducers and Intelligent Control System Ministry of Education Taiyuan University of Technology 030024 Taiyuan China

The rolling mill screw down AGC system sets several subsystems of machinery, electronics, hydraulics, controls in one. Under the action of responding extreme frequency or external disturbances, the non design objective coupling between the subsystems may be excited, and causing the most serious vibration, seriously impact product quality or even cause great destruction. Aiming at the defects in fault diagnosis and control system of the traditional rolling mill, the wireless remote monitoring system for the rolling mill AGC system vibration fault is designed in this paper. Using the advanced sensor technology, PLC and configuration software, GPRS network technology, the parallel distributed data acquisition and data processing for the key servo element and the hydraulic parameters which can characterize the fault characteristics of the system can be done. The monitoring software system platform on line of the hydraulic AGC system based on Kingview is set up for centralized real-time monitoring. According to the collected multidisciplinary parameter the fault identification and location is done by using the fault diagnosis expert system based on Web, thus to make the preliminary evaluation for the operation and fault of hydraulic AGC system and provide advanced prediction and exclude strategy. © 2013 Asian Network for Scientific Information.

关键词： Failure analysis

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The 5th International Conference on Biomedical Engineering and Biotechnology (ICBEB 2016) Abstracts

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BMC MEDICAL IMAGING 2016年第SUPPL 1期16卷 65-65页

作者： [Anonymous] Department of MRI Shandong Medical Imaging Research Institute Affiliated to Shandong University Jinan Shandong 250021 People’s Republic of China Department of Interventional Radiology Shandong Provincial Hospital Affiliated to Shandong University Jinan Shandong 250021 People’s Republic of China College of Information Science and Technology Engr. Research Center of Digitized Textile & Fashion Tech. for Ministry of Education Donghua University Shanghai 201620 China Intelligent multimedia information processing Lab College of Software Northeastern University Shenyang Liaoning Province 110004 China Institute of Biomedical and Health Engineering Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences Shenzhen 518055 China School of Computer Science and Technology Nanjing Normal University Nanjing China Department of Electrical Engineering The City College of New York CUNY New York USA Jiangsu Key Laboratory of 3D Printing Equipment and Manufacturing Nanjing China School of Electronic Science and Engineering Nanjing University Nanjing Jiangsu 210046 China College of Engineering Nanyang Technological University Singapore 639798 Singapore School of Electronic Information Shanghai Dianji University Shanghai China School of Natural Sciences and Mathematics Shepherd University Shepherdstown WV 25443 USA Davis College of Agriculture Natural Resources and Design West Virginia University Morgantown WV 26505 USA State Key Laboratory of Millimeter Waves Southeast University Nanjing 210096 China Center of Medical Physics and Technology Hefei Institutes of Physical Science Chinese Academy of Sciences Hefei China College of Agricultural and Life Sciences University of Florida Gainesville FL 32611 USA Courant Institute of Mathematical Sciences New York University New York NY 10012 USA Translational Imaging Division & MRI Unit Columbia University and New York State Psychiatric Institute New York NY 10032 USA Guangxi Key Laboratory of Manufacturing System & Adv

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Mechanism analysis and simulation of coplanar multi-electrode capacitive ice thickness measuring sensor

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Sensors and transducers 2013年第11期158卷 27-32页

作者： Yinke, Dou Xiaomin, Chang College Electric and Power Engineering of Taiyuan University of Technology 030024 Tai Yuan China Key Laboratory of Advanced Transducers and Intelligent Control System Ministry of Education Taiyuan 030024 China

In this paper, we use the coplanar multi-electrode for designing a rod-shaped sensor for measuring the ice thickness. In order to analyze and study mechanism and feasibility of ice thickness measurements using this technique, we use modes of mathematical model derivation and software simulation to study coplanar multielectrode capacitance sensors. It uses MAXWELL software to simulate the coplanar multi-electrode capacitance sensor under the models which are being approached by three different media, namely ice, air and water. Both mathematical model derivation and simulation results show that the sensor designed with coplanar multielectrode capacitance can be used to level the automated measurement of sea ice or river ice thickness. The accuracy is ± 1 cm. © 2013 by IFSA.

关键词： Thickness measurement

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Study the gas sensing mechanism of oxygen atom on Pd doped ZnO (0001)

Study the gas sensing mechanism of oxygen atom on Pd doped Z...

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IEEE Conference on Nanotechnology

作者： Xiao Deng Jie Hu Shengbo Sang Pengwei Li Gang Li Wendong Zhang College of Physics and Optoelectronics Taiyuan University of Technology Taiyuan Shanxi China Key Lab of Advanced Transducers and Intelligent Control System of the Ministry of Education Taiyuan University of Technology Taiyuan Shanxi China

In this paper, we investigate various surface structures of oxygen adsorption on Pd doping Zn-terminated ZnO (0001) by DFT. The results show that oxygen atom prefers to be adsorbed on the H sites of Pd substituting Zn atom of first Zn-O bilayers. The calculated PDOS indicates that a stronger interaction between adsorbed O2p and Pd4d orbitals has been happened at near the Fermi level. Finally, the bonding situation between adsorbed oxygen and surface is analyzed by electron density difference. The study reveals working mechanism of Pd-ZnO gas sensor, which is useful for finding the relationship between doping and sensitivity of sensor in experiment and theory.

关键词： Zinc oxide Adsorption Doping Surface cleaning Gas detectors Materials

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Singularity detection of magnetic memory signal of steel-cord conveyor belt

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Telkomnika - Indonesian Journal of Electrical Engineering 2013年第9期11卷 4904-4910页

作者： Tiezhu, Qiao Xiaolu, Li Xueying, Zhang Education Ministry Key Lab of Advanced Transducers and Intelligent Control System Taiyuan University of Technology Taiyuan 030024 China College of Information Engineering Taiyuan University of Technology Taiyuan 030024 China

Metal magnetic memory technology was an important method for detecting the steel-cord conveyor belt early fault, characteristics of magnetic memory signal extraction is critical for judging of the conveyor belt failure. Generally using of magnetic memory signal maximum gradient value can quickly judge the stress concentration zone, but the magnetic memory signal is susceptible to effected by environmental and noise;In view of the weak and non-stationary characteristics of magnetic memory signal, this paper has proposed the singularity detection method based on wavelet transform modulus maximum for metal magnetic memory signal, the method could exactly judged the stress concentration zone of joints and located the fault points of the steel-cord belt, the characteristic gradient of magnetic memory signal and the Lipschitz exponent were extracted. The result of simulation indicated the technology was effectively for judging the stress concentration zone and fault point. © 2013 Universitas Ahmad Dahlan.

关键词： Signal detection

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A Linear Interpolation Fuzzy controller for a Boiler Pressure control system

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IFAC Proceedings Volumes 2013年第5期46卷 650-654页

作者： Yanhong BAI Zhijuan ZHAO Zhiyi SUN Long QUAN School of Electronics Information Engineering Taiyuan University of Science and Technology Taiyuan 030024 China Key Laboratory of Advanced Transducers and Intelligent Control system Ministry of Education Taiyuan University of Technology Taiyuan 030024 China

Considering nonlinear behaviors and environmental disturbance of the boiler pressure control system, a linear interpolation fuzzy controller is developed. First, according to the conventional discrete fuzzy control principle, a discrete fuzzy controller for the system is designed and a 2-D fuzzy control lookup table is deduced. Then, to overcome the conventional fuzzy controller's disadvantage of lower precision caused by discretization, a bilinear interpolation 2-D table lookup method is used to replace the exact lookup method, with which continuous output can be obtained from the discrete control table. Finally, based on the existed computer control system and boiler system hardware configuration, hard-in-loop real-time simulation system is established in Matlab/RTWT. Lots of experiments are carried out. And the results prove that better control performance can be achieved with the proposed control scheme.

关键词： fuzzy controller linear interpolation algorithm Matlab/RTWT hard-in-loop simulation

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EIT Based on virtual instrument

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Telkomnika - Indonesian Journal of Electrical Engineering 2013年第3期11卷 1639-1645页

作者： Jun, Ma Wenglong, Wang Jianguo, Zhang Key Lab of Advanced Transducers and Intelligent Control System Ministry of Education Taiyuan 030024 China College of Physics and Optoelectronics Taiyuan University of Technology Taiyuan 030024 China Taiyuan University of Technology The Measuring and Controlling Technology Institute Taiyuan 030024 China

Design of a electrical impedance tomography system based on virtual instrument, the author firstly introduced the virtual instrument into the electrical impedance imaging from the perspective of hardware and software. The system use DAQ of NI to simplify the hardware structure and improve the stability. Software of system combines the advantages of labVIEW and MATlab, and verify some algorithms. Using NI virtual instrument, the system has strong expansion and do good basis for enhancing the performance of electrical impedance imaging system. © 2013 Universitas Ahmad Dahlan.

关键词： Digital instruments

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Excavator Energy-saving Efficiency Based on Diesel Engine Cylinder Deactivation Technology

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Chinese Journal of Mechanical Engineering 2012年第5期25卷 897-904页

作者： YANG Jing QUAN Long YANG Yang Key Laboratory of Advanced Transducers and Intelligent Control System of Ministry of Education Taiyuan University of Technology Taiyuan 030024 China The State Key Lab of Fluid Power Transmission and Control Zhejiang University Hangzhou 31002 7 China

The hydraulic excavator energy-saving research mainly embodies the following three measures： to improve the performance of diesel engine and hydraulic component, to improve the hydraulic system, and to improve the power matching of diesel-hydraulic system-actuator. Although the above measures have certain energy-saving effect, but because the hydraulic excavator load changes frequently and fluctuates dramatically, so the diesel engine often works in high-speed and light load condition, and the fuel consumption is higher. Therefore, in order to improve the economy of diesel engine in light load, and reduce the fuel consumption of hydraulic excavator, energy management concept is proposed based on diesel engine cylinder deactivation technology. By comparing the universal characteristic under diesel normal and deactivated cylinder condition, the mechanism that fuel consumption can be reduced significantly by adopting cylinder deactivation technology under part of loads condition can be clarified. The simulation models for hydraulic system and diesel engine are established by using AMESim software, and fuel combustion consumption by using cylinder-deactivation-technology is studied through digital simulation approach. In this way, the zone of cylinder deactivation is specified. The testing system for the excavator with this technology is set up based on simulated results, and the results show that the diesel engine can still work at high efficiency with part of loads after adopting this technology; fuel consumption is dropped down to 11% and 13% under economic and heavy-load mode respectively under the condition of driving requirements. The research provides references to the energy-saving study of the hydraulic excavators.

关键词： diesel engine cylinder deactivation hydraulic excavator energy-saving

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Recent development of silicon nanowire FET biosensor for DNA detection

Recent development of silicon nanowire FET biosensor for DNA...

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2012 International Conference on Computing, Measurement, control and Sensor Network, CMCSN 2012

作者： Fan, Xuge Sang, Sengbo Hu, Jie Li, Peiwei Li, Gang Zhang, Wendong MicroNano System Research Center Information Engineering College Taiyuan University of Technology China Key Lab. of Advanced Transducers and Intelligent Control System Ministry of Education Taiyuan University of Technology Taiyuan Shanxi China

ISBN: (纸本)9780769547381

Recently biosensors based on silicon nanowire field-effect transistors (SiNW-FETs) have drawn huge amounts of attention, due to their ultrasensitivity, selectivity, label-free and real-time detection abilities. As people know more and more knowledge of the structure and function of nucleic acid molecules, DNA detection has gained importance increasingly. Here, we briefly summarize major fabrication methods in synthesising SiNW-FETs and selectively describe some applications of SiNW-FET biosensors in DNA detection over the past few years. Some key results from each article are summarized, involving the concept and mechanism behind each sensor, with the aim of stimulating more efforts in developing SiNW-FET biosensors for detecting DNA. © 2012 Crown Copyright.

关键词： Biosensors

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Investigation on the exciplex and electroplex based on 2-(4- trifluoromethyl-2-hydroxyphenyl)benzothiazole] zinc as donor or acceptor

Investigation on the exciplex and electroplex based on 2-(4-...

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Asia Communications and Photonics Conference, ACP 2012

作者： Song, Jingcheng Wang, Wenyan Yan, Zhengfu Hao, Yuying Cui, Yanxia Ji, Ting College of Physics and Optoelectronics Taiyuan University of Technology Taiyuan 030024 China Key Lab of Advanced Transducers and Intelligent Control System Ministry of Education Taiyuan University of Technology Taiyuan 030024 China

The electroplex or exciplex between 2-(4- trifluoromethyl-2-hydroxyphenyl) benzothiazole] zinc [Zn(4-TfmBTZ)2] and several charge transport materials is investigated. This investigation is significant for utilizing ef... 详细信息

ISBN: (纸本)9781557529572

关键词： Zinc

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