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第26届中国过程控制会议（CPCC2015）

作者： Li Jiang Zhihuan Song Junghui Chen State Key Laboratory of Industrial Control Technology Institute of Industrial Process Control Department of Control Science and Engineering Zhejiang University Department of Chemical Engineering Chung-Yuan Christian University

Previous work on process monitoring has shown that process nonlinearity can be overcome by neural networks(NN) model. But it's difficult to train a NN model that has good generalization capabilities in process monitoirng. In this paper, a NN model called Auto-Encoder(AE) is introdued to model the process behavior, then a robust training method is proposed based on the idea of making the learned model robust to the noisy training *** analysis shows that the proposed Robust Auto-Encoder(RAE) is equal to a regularized AE which can capture nonlinear variations in the training data. Based on this, a corresponding statistic is introduced for *** case studies are provided for performance evaluation of the proposed method.

关键词： Process Monitoring Fault Detection Robust Auto-Encoder

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Supply chain uncertainty under ARIMA demand process

Supply chain uncertainty under ARIMA demand process

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11th International Conference on Business Process Management, BPM 2013

作者： Pan, Mi Wu, Weimin The State Key Laboratory of Industrial Control Technology Institute of Cyber-systems and Control Zhejiang University Hangzhou China

ISBN: (纸本)9783319062563

This paper discusses a typical supply chain system based on Auto- Regressive Integrated Moving Average (ARIMA) demand process. Minimum Mean Square Error principle and stochastic optimal control theory are introduced to build a new framework for supply chain uncertainty study under general ARIMA demand process. After formulating the order and inventory quantity at time period t, this paper analyzes the optimal order policy as to decrease the bullwhip effect and stock fluctuations under non-stationary demand. The theoretical analysis reveals that a reasonable order quantity can reduce the bullwhip effect generated by demand uncertainty. We also show the negative correlation between the bullwhip effect and inventory stability in the discussed supply chain model. © Springer International Publishing Switzerland 2014.

关键词： Mean square error

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Analysis of delay attacks based on game theory in time synchronization protocols

Analysis of delay attacks based on game theory in time synch...

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2013 International Conference on Communication technology, ICCT 2013

作者： Gao, Mengzhou Feng, Dongqin Chu, Jian Institute of Cyber-Systems and Control State Key Laboratory of Industrial Control Technology Zhejiang University Hangzhou China

ISBN: (纸本)9781845648633

Time synchronization protocols are widely used in industrial control systems. As the development of network technology, various types of attacks have occurred. Among them, delay attacks are less studied. In this paper, we described an effective way for delay attacks which were achieved by a Man-In-The-Middle attack of asymmetric delays. To find inherent relationships between attackers and defenders, we proposed a two-person noncooperative game theoretic model. Based on Expected Utility Maximization, the mixed-strategy Nash equilibrium (NE) was resolved. The expression of probability distribution under NE indicates potential relationships between mixed-strategy probability distributions, attack costs, defence costs, and provides evidence for security and risk management professionals. © 2014 WIT Press.

关键词： Game theory

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A Petri net approach for green supply Chain network modeling and performance analysis

A Petri net approach for green supply Chain network modeling...

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11th International Conference on Business Process Management, BPM 2013

作者： Pan, Mi Wu, Weimin The State Key Laboratory of Industrial Control Technology Institute of Cyber-systems and Control Zhejiang University Hangzhou China

ISBN: (纸本)9783319062563

Green supply chain has become a promising and challenging field during the last decade driven by rising environmental conscious business and governmental legislation. In this paper, we develop a Petri-net based model to describe the green supply chain and to evaluate the essential performance. Generalized stochastic Petri nets (GSPN) are introduced to model the network of a general green supply chain with time characteristics. Performance analysis is carried out using the embedded Markov chain. Furthermore, we perform a comparison between green and normal supply chain to assert the superiority of the green supply chain in terms of profits. © Springer International Publishing Switzerland 2014.

关键词： Petri nets

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Drug Delivery: A Cooperative Dimensional Strategy for Enhanced Nucleus‐Targeted Delivery of Anticancer Drugs (Adv. Funct. Mater. 24/2017)

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Advanced Functional Materials 2017年第24期27卷

作者： Hebin Wang Yang Li Hongzhen Bai Jie Shen Xi Chen Yuan Ping Guping Tang Department of Chemistry Zhejiang University Hangzhou 310028 China Engineering Laboratory of Chemical Resources Utilization in South Xinjiang of Xinjiang Production and Construction Corps College of Life Sciences Tarim University Alar 843300 China State Key Laboratory of Industrial Control Technology College of Control Science and Engineering Zhejiang University Hangzhou 310028 China School of Medicine Zhejiang University City College Hangzhou 310015 China Center for Environment Implications of Nanotechnology California NanoSystems Institute (CNSI) University of California Los Angeles CA 90095 USA School of Materials Science and Engineering Nanyang Technological University Singapore 639798 Singapore

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A memetic algorithm for path planning of curvature-constrained UAVs performing surveillance of multiple ground targets

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Chinese Journal of Aeronautics 2014年第3期27卷 622-633页

作者： Zhang Xing Chen Jie Xin Bin Peng Zhihong School of Automation Beijing Institute of Technology State Key Laboratory of Intelligent Control and Decision of Complex Systems

The problem of generating optimal paths for curvature-constrained unmanned aerial vehicles （UAVs） performing surveillance of multiple ground targets is addressed in this paper. UAVs are modeled as Dubins vehicles so that the constraints of UAVs＇ minimal turning radius can be taken into account. In view of the effective surveillance range of the sensors equipped on UAVs, the problem is formulated as a Dubins traveling salesman problem with neighborhood （DTSPN）. Considering its prohibitively high computational complexity, the Dubins paths in the sense of terminal heading relaxation are introduced to simplify the calculation of the Dubins distance, and a boundary-based encoding scheme is proposed to determine the visiting point of every target neighborhood. Then, an evolutionary algorithm is used to derive the optimal Dubins tour. To further enhance the quality of the solutions, a local search strategy based on approximate gradient is employed to improve the visiting points of target neighborhoods. Finally, by a minor modification to the individual encoding, the algorithm is easily extended to deal with other two more sophisticated DTSPN variants （multi-UAV scenario and multiple groups of targets scenario）. The performance of the algorithm is demonstrated through comparative experiments with other two state-of-the-art DTSPN algorithms identified in literature. Numerical simulations exhibit that the algorithm proposed in this paper can find high-quality solutions to the DTSPN with lower computational cost and produce significantly improved performance over the other algorithms.

关键词： Approximate gradient Dubins traveling salesmanproblem with neighborhood Local search Memetic algorithm Unmanned aerial vehicles

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On Convergence of Extended state Observers for Discrete-Time Nonlinear systems

On Convergence of Extended State Observers for Discrete-Time...

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第三十四届中国控制会议

作者： Yuan Huang Junzheng Wang Dawei Shi State Key Laboratory of Intelligent Control and Decision of Complex Systems School of Automation Beijing Institute of Technology

ISBN: (纸本)9781467374439

The extended state observer, a crucial part of the active disturbance rejection control, was first proposed in 1995 by Jingqing Han. The discrete-time form of the extended state observer has been extensively used in many practical applications in engineering such as quad-rotor robot control and non-circular machining control;the convergence property of the discrete-time n-dimensional extended state observer, however, remains unexplored and is investigated in this work. The main idea is to construct the error equations of the discrete-time extended state observer for an n-dimensional single-input-single-output nonlinear system with uncertainty, and to prove the convergence of the extended state observer through induction.

关键词： Extended state observer,Discrete time system,Active disturbance rejection control

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Integration optimization of production and utility system for refinery-wide planning 19

Integration optimization of production and utility system fo...

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19th IFAC World Congress on International Federation of Automatic control, IFAC 2014

作者： Zhao, Hao Rong, Gang Feng, Yiping Dong, Xiaoyang State Key Laboratory of Industrial Control Technology Institute of Cyber-Systems and Control ZheJiang University Hangzhou310027 China

ISBN: (纸本)9783902823625

Traditional optimization of production system and utility system is carried out separately which cannot ensure that the entire refinery system is optimized globally. In this paper, a novel integrated approach is proposed to optimize process production planning and utility system operation simultaneously. A refinery-wide mixed integer nonlinear programming model is proposed and the traditional method and improved integrated method are compared. A real industrial example is conducted to demonstrate the effect of the proposed mathematical model. The results suggest that the integrated approach can provide not only significant benefits but also better energy utilization. © IFAC.

关键词： Integer programming

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Cyclic scheduling of no backup cracking furnace system considering real world operational characteristics 19

Cyclic scheduling of no backup cracking furnace system consi...

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19th IFAC World Congress on International Federation of Automatic control, IFAC 2014

作者： Wang, Zihao Feng, Yiping Rong, Gang State Key Laboratory of Industrial Control Technology Institute of Cyber-Systems and Control ZheJiang University Hangzhou310027 China

ISBN: (纸本)9783902823625

Ethylene cracking furnace system is the heart of ethylene production. It can process different raw materials in the pipe group of each furnace and can produce the main chemical products like ethylene, propylene and ethane. In the real world ethylene plant, there are two operation modes in the furnace system, one has a backup furnace in the system and the other is with all the furnaces available online. Compared with the mode which has a backup furnace, the operation mode with all the furnace online has more benefits in prolonging the batch processing time and saving the operational cost. Considering some of the operational characteristics like shutting down for decoking and varying running capacity with the processing cost and product values, the scheduling scheme is optimized to achieve the best economic performance of the cracking furnace system. In this paper, an improved MINLP model considering some real world operational characteristics under the no backup furnace operation mode is developed and solved by a new heuristic iterative solving method. The feasibility and the efficiency of the model is demonstrated through a numerical case study from a real world plant. © IFAC.

关键词： Furnaces

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Recovering the controllability of complex networks 19

Recovering the controllability of complex networks

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19th IFAC World Congress on International Federation of Automatic control, IFAC 2014

作者： Ding, Jin Lu, Yong-Zai Chu, Jian State Key Laboratory of Industrial Control Technology Institute of Cyber-Systems and Control ZheJiang University Hangzhou310027 China

ISBN: (纸本)9783902823625

The studies on the controllability of complex networks popularly existing in natural, social and man-made engineered systems have been a critical and attractive subject for both academic and practical communities. To design and maintain a networked system under control, it is vital to explore the mechanism and relationship between the network layout and its controllability. For a fully-controlled complex system, potential malicious attacks and/or random failures will lead to the damage of its internal structure, such as the breakdown of certain control nodes or the loss of the links between state nodes. In this paper, we first introduce the concept of degree of controllability to quantify the control level of the networks. And for the networks whose degree of controllability is not full, we propose two novel optimal recovering strategies, OAN (short for optimal adding-node) strategy and OAE (short for optimal adding-edge) strategy, to repair their controllability. The results of experiments conducted on the various real and model networks demonstrate the effectiveness of these two strategies and the better performance compared to their randomized counterparts, RAN (short for randomized adding-node) strategy and RAE (short for randomized adding-edge) strategy. © IFAC.

关键词： Complex networks

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