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Virtual Factory Integrated Manufacturing System for Process Simulation and Monitoring

IFAC Proceedings Volumes 2011年第1期44卷 5219-5224页

作者： Zewei Zhou Yiping Feng Feng Zhu Gang Rong State Key Laboratory of Industrial Control Technology Institute of Cyber-Systems and Control Zhejiang University Hangzhou 310027 P.R.China

Abstract A virtual factory integrated manufacturing system combined with system simulation and virtual reality is introduced in this paper. We describe the system architecture and development methodology, provide the working principle of process simulation and monitoring in virtual factory, and then explain the detailed applications of virtual factory integrated manufacturing system. With the visualization and three-dimensional human-computer interaction about process and production data, this platform can provide effective supports on monitoring, control and operation of manufacturing system.

关键词： simulation integration virtual reality intelligent manufacturing systems integrated plant control

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2011 IEEE International Conference on Service Operations, Logistics and Informatics, SOLI 2011

作者： Lin, Jia Tan, Ping He, Weiting Chu, Jian Chen, Zhihua State Key Laboratory of Industrial Control Technology Institute of Cyber-Systems and Control Zhejiang University 38 Zheda Road 310027 Hangzhou China Zhejiang Insigma-Supcon Co.Ltd 525 Xixi Road 310013 Hangzhou China

ISBN: (纸本)9781457705731

As a large-capacity public transport tool, the railway system needs high stability and reliability. In order to reduce cost and satisfy the safety requirements of train control system, a novel safety-related digital input system is designed and implemented based on architectural constraints of safety-related systems and the analysis of the working principle of the specific digital input system. This system is designed as 2-out-of-3 architecture on the basis of vital computer. The method of fault diagnosis has been improved after the analysis of the practical situation. That is, the detection signal sent by the external pulse transmitter module contains the circuit fault information after the signal pass through the input circuit, and the real-time self-diagnosis will be done after using the supporting software to deal with timing diagram. The system uses less CPU resources to achieve the high diagnostic efficiency, which improves safety failure rate. And its failure analysis is discussed. The Markov Model is used to verify the Safety Integrity Level (SIL) of the safety-related system. The analysis shows that this design, with easy implementation and low cost, meets the requirements of SIL4 in railway and is more reliable. © 2011 IEEE.

关键词： Failure analysis

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Novel Selenium-containing Human Single-chain Variable Fragment with Glutathione Peroxidase Activity from Computer-aided Molecular Design

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Chemical Research in Chinese Universities 2011年第5期27卷 813-819页

作者： WANG Cheng WAN Pei GONG Ping-sheng LV Li-min XU Ya-wei ZHAO Yang HE Bo ZHAO Gang YAN Gang-lin MU Ying LV Shao-wu LUO Gui-min Key Laboratory for Molecular Enzymology and Engineering Ministry of Education College of Life Science Jilin University Changchun 130012 P. R. China State Key Laboratory of Industrial Control Technology Research Center for Analytical Instrumentation Institute of Cyber-systems and Control Zhejiang University Hangzhou 310058 P. R. China Department of Biochemistry School of Basic Medical Sciences Jilin Medical College Jilin 132013 P. R. China

In order to enhance the glutathione peroxidase（GPX） catalytic activity of the selenium-containing single-chain variable fragments（Se-scFv）, a novel human scFv was designed on the basis of the structure of human antibody and optimized via bioinformatics methods such as homologous sequence analysis, three-dimensional（3D） model building, binding-site analysis and docking. The DNA sequence of the new human scFv was synthesized and cloned into the expression vector pET22b（＋）, then the scFv protein was expressed in soluble form in Escherichia coli BL21（DE3） and purified by Ni2＋-immobilized metal affinity chromatography（IMAC）. The serine residue of scFv in the active site was converted into selenocysteine（Sec） with the chemical modification method, thus, the human Se-scFv with GPX activity was obtained. The GPX activity of the Se-scFv protein was characterized. Compared with other Se-scFv, the new human Se-scFv showed similar efficiency for catalyzing the reduction of hydrogen peroxide by glutathione. It exhibited pH and temperature dependent catalytic activity and a typical ping-pong kinetic mechanism.

关键词： Glutathione peroxidase（GPX） Single-chain variable fragment（scFV） Three-dimensional model Selenium

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Performance assessment of PID controller with time-variant disturbance dynamics

Performance assessment of PID controller with time-variant d...

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作者： Zhou, Mengfei Xie, Lei Pan, Haitian Wang, Shuqing College of Chemical Engineering and Materials Science Zhejiang University of Technology Hangzhou 310027 China National Key Laboratory of Industrial Control Technology Institute of Cyber-Systems and Control Zhejiang University Hangzhou 310027 China

A method is proposed for performance assessment of PID control loops subject to time-varying disturbance dynamics, which is often observed in industrial processes. The proposed method optimizes overall performance of the processes and presents a PID tradeoff curve which provides a useful lower bound on the achievable performance of the PID controller in terms of both the most significant disturbance rejection and the representative disturbance rejection. One can choose an optional benchmark to assess the PID control performance according to the tradeoff curve. The developed performance assessment technique is illustrated by simulation and industrial examples. © 2011 Zhejiang University.

关键词： Three term control systems

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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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International Symposium on Advanced control of industrial Processes (ADCONIP)

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

关键词： industrial control control systems Business Internet Manufacturing Planets Production

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MPC economic performance assessment based on equal-grid LQG benchmark

MPC economic performance assessment based on equal-grid LQG ...

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International Symposium on Advanced control of industrial Processes (ADCONIP)

作者： Zhe Liu Yong Gu Lei Xie State Key Laboratory of Industrial Control Technology Institute of Cyber-Systems and Control University of Zhejiang Hangzhou China

Model Predictive control technology as the most typical method of Advanced Process control has been developed rapidly and applied widely in process industry. Weather MPC controllers operate well or not affect the enterprise benefit directly, therefore it is significant to carry out economic performance assessment and optimization. As a pragmatic method, LQG benchmark introduces manipulated variables together with controlled variables into quadratic dynamic index, which is more suitable for industrial application than Minimum Variance control benchmark. However, traditional LQG benchmark is regressed from an unbalanced distribution of discrete points set, which causes unnecessary calculation and poor regression in more important parts of points set. To avoid this, the relationship between manipulated variables variance and controlled variables variance was calculated, an equal-grid LQG benchmark was introduced and added in two layers MPC optimization problem as an equation constraint, then the optimal MPC setting values or reference trajectory could be obtained. The economic performance assessment and simulation results for delayed coking furnace show the effect of proposed methods.

关键词： Economics Benchmark testing Optimization Process control Furnaces Performance analysis Steady-state

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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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International Symposium on Advanced control of industrial Processes (ADCONIP)

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

关键词： Benchmark testing Monitoring Predictive models control systems Predictive control Measurement uncertainty

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Research on multivariable control performance assessment techniques

Research on multivariable control performance assessment tec...

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International Symposium on Advanced control of industrial Processes (ADCONIP)

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

关键词： Benchmark testing Monitoring Process control control systems Transfer functions MIMO Noise

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一种基于射频识别技术的样品管理系统的研究

一种基于射频识别技术的样品管理系统的研究

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第九届全国微波化学暨第四届样品制备学术会议

作者： WANG Bu-yun 王步云 WU Chang-qing 吴长青 XU Cheng-jin 徐铖晋 ZHANG Yu-ming 张育铭 HU Tian-yao 胡天耀 State Key Laboratory of Industrial Control Technology Institute of Cyber-Systems and Control Researc 工业控制技术国家重点实验室浙江大学智能系统和控制研究所分析仪器研究中心杭州 310058

射频识别技术是从二十世纪八十年代开始走向成熟的一项自动识别技术，其对改善人们的生活质量、提高企业经济效益、加强公共安全以及提高社会信息化水平都产生了重大影响。本文介绍了一种基于微波射频识别技术的食品安全样品管理系统。... 详细信息

射频识别技术是从二十世纪八十年代开始走向成熟的一项自动识别技术，其对改善人们的生活质量、提高企业经济效益、加强公共安全以及提高社会信息化水平都产生了重大影响。本文介绍了一种基于微波射频识别技术的食品安全样品管理系统。基于微波射频技术建立的样品管理系统，可以应用到化学、食品样品检测和药品安全管理等领域，并慢慢延伸到样品分析的各行业，对于提高作业效率和经济效益起到关键作用。

关键词：样品管理系统射频识别技术软件设计系统开发

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基于RFID技术的食品安全溯源的研究进展

基于RFID技术的食品安全溯源的研究进展

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第九届全国微波化学暨第四届样品制备学术会议

作者： FANG Zheng 方正 WU Chang-qing 吴长青 XU Cheng-jin 徐铖晋 ZHANG Yu-ming 张育铭 HU Tian-yao 胡天耀 State Key Laboratory of Industrial Control Technology Institute of Cyber-Systems and Control Researc 工业控制技术国家重点实验室浙江大学智能系统和控制研究所分析仪器研究中心杭州 310058

随着食品安全问题频频发生，检测、追溯食品安全问题的源头显得越来越重要。利用RFID技术追溯食品安全问题的源头成为一种趋势。本文作者综述了一种利用RFID射频技术追踪溯源酱鸭从养殖到生产、运输、销售等全程信息，提供了一种有效的... 详细信息

随着食品安全问题频频发生，检测、追溯食品安全问题的源头显得越来越重要。利用RFID技术追溯食品安全问题的源头成为一种趋势。本文作者综述了一种利用RFID射频技术追踪溯源酱鸭从养殖到生产、运输、销售等全程信息，提供了一种有效的溯源方法。

关键词：食品安全无线射频识别技术溯源模型软件开发

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