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2012 3rd International Conference on Information technology for Manufacturing systems(ITMS 2012)

作者： Zongtian Wei Shenggui Zhang Nannan Qi Department of Applied Mathematics Northwestern Polytechnical University The State Key Laboratory for Manufacturing Systems Engineering (Xi'an Jiao Tong University) Science and Technology on EO-control Laboratory Luoyang Institute of Electro-optic Equipment

The reliability of a facility system is to a large degree adversely affected by the edge facility failures. In this paper, we consider the design of reliable facility systems based on the classical p-median problem subject to edge failures. A reliable model is formulated and a scenario based algorithm is applied for computing an instance. The results show that the reliability of a facility system will increase when considering the edge facility failures in locating decision.

关键词： facility system reliability edge failure location problem

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Model predictive control performance assessment using a prediction error benchmark

Model predictive control performance assessment using a pred...

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作者： Zhang, Rongjin Zhang, Quanling Institute of Cyber-Systems and Control State Key Laboratory of Industrial Control Technology Zhejiang University Hangzhou China

Model predictive control technology can now be found widely in a variety of applications including petroleum, chemical and papermaking industries. An approach is proposed to decide a benchmark and monitor model predictive control performance on-line. A performance measure based on multi-step prediction error benchmark is shown to be more realistic without the requirement of process models or interactor matrix. A practical on-line monitoring strategy is presented which emphasizes the use of routine operating data plus the order of the interactor matrix to determine when it becomes worthwhile to re-identify the plant dynamics and re-install the model predictive control application. © 2011 Zhejiang University.

关键词： Model predictive control

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Research on multivariable control performance assessment techniques

Research on multivariable control performance assessment tec...

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作者： Huang, Qizhen Zhang, Quanling Institute of Cyber-Systems and Control State Key Laboratory of Industrial Control Technology Zhejiang University Hangzhou China

To avoid the problem of estimating a general interactor, an improved computational method for user-specified benchmark is presented in this paper. The improved user-specified benchmark together with the historical benchmark are then specified as two parallel benchmarks to form an integrated performance assessment strategy, which can detect any change in the performance of a control system and identify the potential improvement that can be made to the performance of the control system. Simulated examples are provided to illustrate the validity of the proposed methods. © 2011 Zhejiang University.

关键词： Benchmarking

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The perspective of industrial control driven by global economy and information technologies

The perspective of industrial control driven by global econo...

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作者： Lu, Yong-Zai Chu, Jian State Key Laboratory of Industrial Control Technology Institute of Cyber Systems and Control Zhejiang University Hangzhou China

The development of next generation of industrial control to meet business requirement and elegantly utilize the latest information technologies has been a challenge and opportunity to industrial control community in coming decades. The purposes of this presentation are to provide an analytical review of the recent trends of future industrial controls, and then to investigate the potential applications of internet of things, sensor network and the concept of smart planet in building an enterprise-wide industrial control systems with integration of control, computer, communication and network technologies. Finally, a number of open R&D problems are proposed in the section of concluding remarks. © 2011 Zhejiang University.

关键词： Sensor networks

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Study on the Rationality and Validity of Probit Models of Domino Effect to Chemical Process Equipment caused by Overpressure

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Journal of Physics: Conference Series 2013年第1期423卷

作者： Dongliang Sun Guangtuan Huang Juncheng Jiang Mingguang Zhang Zhirong Wang State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process School of Resources and Environmental Engineering East China University of Science and Technology No. 130 Meilong Road Xuhui District Shanghai 200237 China To whom any correspondence should be addressed Jiangsu Key Laboratory of Urban and Industrial Safety Institute of Safety Engineering School of Urban Construction and Safety Engineering Nanjing University of Technology No. 200 North Zhongshan Road Nanjing 210009 Jiangsu China

Overpressure is one important cause of domino effect in accidents of chemical process equipments. Some models considering propagation probability and threshold values of the domino effect caused by overpressure have been proposed in previous study. In order to prove the rationality and validity of the models reported in the reference, two boundary values of three damage degrees reported were considered as random variables respectively in the interval [0, 100%]. Based on the overpressure data for damage to the equipment and the damage state, and the calculation method reported in the references, the mean square errors of the four categories of damage probability models of overpressure were calculated with random boundary values, and then a relationship of mean square error vs. the two boundary value was obtained, the minimum of mean square error was obtained, compared with the result of the present work, mean square error decreases by about 3%. Therefore, the error was in the acceptable range of engineering applications, the models reported can be considered reasonable and valid.

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The analysis of a scheduling strategy with energy balance for linear wireless sensor networks

The analysis of a scheduling strategy with energy balance fo...

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31st Chinese control Conference, CCC 2012

作者： Wang, Zhengjie Zhao, Xiaoguang Qian, Xu Shandong University of Science and Technology Qingdao 266590 China State Key Laboratory of Management and Control for Complex Systems Institute of Automation Chinese Academy of Sciences Beijing 100190 China Beijing 100083 China

ISBN: (纸本)9789881563811

Considering the linear wireless sensor network application scenarios, such as road, bridge, tunnel and metro where linear network and multi-hop traffic pattern make the energy consumption unbalanced. The nodes near the base station are required to forward the large amount of traffic for other nodes, which exhausts their energy and results in the failure of network monitoring. In order to solve this problem, a linear wireless sensor network and uniform deployment strategy are considered and an optimal scheduling strategy based on the nonlinear programming is presented. The constraint is formed by the energy model and the requirement of balanced energy consumption. The network lifetime can be extended by adjusting the proportion of traffic and the distance to next hop. The factors affecting the energy efficiency are analyzed and simulation is presented. Simulation results show that energy balance can be achieved by adjusting the communication distance and traffic and network lifetime can be extended. © 2012 Chinese Assoc of Automati.

关键词： Energy balance

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Nanocomposites of Carbon Nanotube (CNTs)/CuO with High Sensitivity to Organic Volatiles at Room Temperature

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Procedia Engineering 2012年 36卷 235-245页

作者： Jing Zheng Qingqing Zhang Xiaochun He Mingjun Gao Xingfa Ma Guang Li School of Environmental and Material Engineering Center of Advanced Functional Materials Yantai University Yantai 264005 P. R. China State Key Laboratory of Silicon Materials Zhejiang University Hangzhou 310027 P. R. China National Laboratory of Industrial Control Technology Institute of Advanced Process Control Zhejiang University Hangzhou 310027 P. R. China

In order to enhance the sensitivity of carbon nanotube based chemical sensors at room temperature operation, CNTs/CuO nanocomposite was prepared under hydrothermal reaction condition. The resulted-product was characterized with TEM (transmission electron microscopy), XRD (X-ray diffraction) and so on. A chemical prototype sensor was constructed based on CNTs/CuO nanocomposite and an interdigital electrode on flexible polymer substrate. The gas-sensing behavior of the sensor to some typical organic volatiles was investigated at room temperature operation. The results indicated that the carbon nanotube was dispersed well in CuO matrix, the CuO was uniformly coated on the surface of carbon nanotube, and the tubular structure of carbon nanotube was clearly observed. From morphology of TEM images, it can also be observed that a good interfacial adhesion between CNT and CuO matrix was formed, which maybe due to the results of strong interaction between CNTs with carboxyl groups and CuO containing some hydroxy groups. The CNTs/CuO nanocomposite showed dramatically enhanced sensitivity to some typical organic volatiles. This study would provide a simple, low-cost and general approach to functionalize the carbon nanotube. It is also in favor of developing chemical sensors with high sensitivity or catalysts with high activity to organic volatiles at low temperature.

关键词： Carbon nanotube (CNTs) CuO nanocomposites organic volatiles sensitivity improvement chemical sensors

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Praparation, characterizations, and its potential applications of PANi/ graphene oxide nanocomposite

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Procedia Engineering 2012年 27卷 1478-1487页

作者： Jing Zheng Xingfa Ma Xiaochun He Mingjun Gao Guang Li School of Environmental and Material Engineering Center of Advanced Functional Materials Yantai University Yantai 264005 P. R. China State Key Laboratory of Silicon Materials Zhejiang University Hangzhou 310027 P. R. China National Laboratory of Industrial Control Technology Institute of Advanced Process Control Zhejiang University Hangzhou 310027 P. R. China

Graphene oxide (GO), nano/micro-structured polyaniline (PANi) are some typical important functional materials, which have many applications in lithium ion battery with high energy, supercapacitor, catalysts, solar cells, nanodevices, chemical sensors, biosensors and biomedical fields. In this paper, GO was obtained by using chemical oxidation method at room temperature, and nano/micro-structured GO/PANi composite was prepared with in-situ polymerization of aniline in the presence of GO suspension. A series of characterizations were examined by TEM (transmission electron microscopy), SEM (scanning electron microscope), XRD (X-ray diffraction), the Fourier-Transform Infrared (FTIR) spectra, UV-Vis, et al. The results indicated that most of the surface of GO sheets was covered with a smooth thin layer of polyaniline, and some domains of the surface of GO sheets were clearly observed polyaniline nanowires anchored. To examine the surface and interface properties of GO/PANi nanocomposite, chemical prototype sensors were constructed based on GO/PANi nanocomposite and a QCM (quartz crystal microbalance) device. The response behaviors of the sensor to some typical volatile compounds operating at room temperature were investigated. The adsorption features to some typical volatile compounds were discussed. Some key issues and modification ideas were suggested for further investigation.

关键词： Graphene oxide (GO) Nanocomposites Surface and Interface Features Adsorption Response Chemical sensors

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Number estimation of controllers for pinning a complex dynamical network

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Journal of Zhejiang University-Science C(Computers and Electronics) 2011年第6期12卷 470-477页

作者： Lei WANG Huan SHI You-xian SUN School of Mathematics and Systems Science and LMIB Beihang University Beijing 100191 China State Key Lab of Industrial Control Technology Institute of Industrial Process Control Zhejiang University Hangzhou 310027 China

Number estimation of controllers is a fundamental question in pinning synchronization of complex networks. This paper studies the problem of controller number in synchronizing a complex network of coupled dynamical systems by means of pinning. For a complex network with a symmetric coupling matrix and full coupling between the nodes, we formulate network synchronization via pinning as a linear matrix inequality criterion, and provide a lower bound and an upper bound of the controller number for a given complex network with fixed architecture. Several numerical examples with Barabási-Albert network topologies are provided to verify our theoretical results.

关键词： Pinning control Number estimation Synchronization Complex networks

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On Designing Time-delay Feedback controller for Master-Slave Synchronization of Singular Lur’e systems

On Designing Time-delay Feedback Controller for Master-Slave...

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2012 International Conference on Modelling,Identification and control(建模、辨别与控制国际会议 ICMIC 2012)

作者： Xiaofu Ji Ceng Zu Hongye Su school of Electrical and Infor- mation Engineering Jiangsu UniversityZhenjiang212013P.R.China school of Electrical and Infor-mation Engineering Jiangsu UniversityZhenjiang212013P.R.China National Key Laboratory of Industrial ControlTechnology Institute of Cyber-Systems and ControlZheji

This paper is concerned with the problem of designing a time-delay output feedback controller for the master-slave synchronization of singular Lur'e *** on the generalized Lyapunov-Krasovskii functional theory, new delay-dependent synchronization criterion is derived by dividing the time delay into two intervals and designing different energy functions in each *** controller design algorithm is also given in terms of strict linear matrix inequality.A numerical example is used to illustrate the effectiveness of the design method.

关键词： Singular Lur'e systems Time-delay synchronization Linear matrix inequality

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