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作者： Hu, Yunping Feng, Yiping Rong, Gang State Key Laboratory of Industrial Control Technology Institute of Cyber-Systems and Control Zhejiang University Hangzhou 310027 China

ISBN: (纸本)9783902661937

A comprehensive simulation and optimization platform which offers a lot of functions such as decision analysis, production scheduling optimization and process dynamic simulation is urgently required for today's process industry. But this will generate a series of model management problems because models integrated in the platform belong to different classifications and interact with each other in some special applications. In this paper, a model management platform for refinery multi-level simulation and optimization is introduced. The platform, referring to a classical model management framework in decision supporting area, integrates different refinery models for different users and can coordinate computational tasks between models for multi-level application. © 2011 IFAC.

关键词： Hierarchical systems

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Virtual factory integrated manufacturing system for process simulation and monitoring

Virtual factory integrated manufacturing system for process ...

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

ISBN: (纸本)9783902661937

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. © 2011 IFAC.

关键词： Virtual reality

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Stabilization on a class of networked control systems with random communication delay

Stabilization on a class of networked control systems with r...

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作者： Sun, Tao Su, Hongye Wu, Zhengguang State Key Laboratory of Industrial Control Technology Institute of Cyber-Systems and Control Zhejiang University Hangzhou 310027 China

ISBN: (纸本)9783902661937

This paper is concerned with the stabilization problem of wireless networked control systems with network-induced delays of time-varying Markovian characterization. The effects of the sample rate changing on the network induced delay is the main topic. At first place, the time delay matrices changing stochastically and arbitrarily are considered. A state feedback controller is designed to guarantee the resulting close-loop system stochastically stable. Following that, a bridge is built to give out a uniform work.A numerical example is presented to illustrate the effectiveness and potential of the developed theoretical results. © 2011 IFAC.

关键词： Networked control systems

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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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Imprinted Human Serum Albumin with Antioxidant Activity

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Chemical Research in Chinese Universities 2011年第2期27卷 258-263页

作者： SHEN Na YAN Fei GUO Yi LU Shao-wu GONG Ping-sheng XU Ya-wei YAN Gang-lin MU Ying LUO Gui-min Key Laboratory of 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

In order to create a new mimic of glutathione peroxidase（GPx）, bioimprinting was used to generate gluta-thione（GSH） binding site and chemical modification was used to incorporate catalytic group selenocystine（Sec）. Human serum albumin（HSA） and S-substituted dinitrophenyl glutathione（GSH-S-DNP） were chosen as the imprinted matrix and imprinting template, respectively, to generate a GSH-imprinted protein（GSH-HSA） by bioimprinting. Sec was incorporated into the GSH-HSA by chemical modification to give a new GPx mimic（Se-GSH-HSA）. Se-GSH-HSA displayed considerably higher GPx activity than non-printed HSA（Se-HSA）. The enzymic properties and kinetics of Se-GSH-HSA were studied. Moreover, Se-GSH-HSA was confirmed to have stronger antioxidant ability to protect mitochondria against oxidative damage with ferrous sulfate/ascorbate-induced mitochondria damage model, indicating that Se-GSH-HSA has potential application in medicine.

关键词： Antioxidant Enzyme mimic Glutathione peroxidase Molecular imprinting

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Structure restricted (PID) controller performance assessment for multi-stage batch processes with tracking and regulatory requirements

Structure restricted (PID) controller performance assessment...

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作者： Fu, Ruowei Xie, Lei Song, Zhihuan Institute of Industrial Process Control Department of Control Science and Technology Zhejiang University Hangzhou 310027 China State Key Laboratory of Industrial Control Technology Institute of Cyber-Systems and Control Zhejiang University Hangzhou 310027 China

A new control performance assessment method based on a structured residual for multi-stage batch processes is presented. After separating the process into different stages according to reference signal dynamics, based on specific tracking and regulatory requirements of different stage, a structured residual focusing on deterministic part of output error with different weights on each stage is minimized to form the performance benchmark. In this way, it explores the equilibrium control effect in tracking and regulatory stages of batch processes in the whole batch sense. The best control performance with respect to stage balance and the overall optimal controller settings are searched using Newton's method. The application to an exothermic chemical batch reactor shows its effectiveness and feasibility. © 2011 Zhejiang University.

关键词： Batch reactors

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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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作者： Liu, Zhe Gu, Yong Xie, Lei State Key Lab. of Industrial Control Technology Institute of Cyber-Systems and Control Zhejiang University Hangzhou 310027 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. © 2011 Zhejiang University.

关键词： Model predictive control

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control via interconnection and damping assignment of linear time-invariant systems is equivalent to stabilizability

Control via interconnection and damping assignment of linear...

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作者： Liu, Zhitao Ortega, Romeo Su, Hongye State Key Laboratory of Industrial Control Technology Institute of Cyber-Systems and Control Zhejiang University Hangzhou 310027 China Laboratoire des Signaux et Systèmes CNRS-Supelec 91192 Gif-sur-Yvette France

ISBN: (纸本)9783902661937

In this brief note it is shown that the linear matrix inequalities that result from the application of interconnection and damping assignment passivity-based control to general linear time-invariant systems are feasible if and only if the system is stabilizable. A very simple proof of this fact is given that, in contrast to previous results, does not require the assumption that the system has no uncontrollable pole at s = 0. © 2011 IFAC.

关键词： Linear matrix inequalities

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