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10th IFAC/IFORS/IMACS/IFIP Symposium on Large Scale Systems: Theory and Applications, LSS 2004

作者： Wan, Bai-Wu Liu, Ding Ruan, Xiaoe Institute of Systems Engineering State Key Laboratory for Manufacturing Systems Engineering Xi'anJiaotong University China School of Automation Xi 'an University of Technology China Dept. of Electrical Engineering and Computer Science Korea Advanced Institute of Science and Technology 373-7 Guseong-dong Yuseong-gu Daejeon305-701 Korea Republic of Faculty of Science Xi 'anJiaotong University China

This paper reviews what the first Author and his Group have been investigating for the past decade in the on-line steady-state hierarchical intelligent control and optimization of large-scale industrial processes (LSIP), as well as large-scale systems (LSS). The techniques include the use of neural networks for identification and optimization, the use of expert systems to solve some kinds of hierarchical multi-objective optimization problems, the use of the fuzzy logic control and the use of the iterative learning control. In addition, several implementation examples and the product quality control for LSS are introduced. Finally the paper prospects the new stages of development. © 2004 IFAC.

关键词： Quality control

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An approach to analyze the stability of a class of hybrid systems with delay

An approach to analyze the stability of a class of hybrid sy...

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World Congress on Intelligent Control and automation (WCICA)

作者： Gang Zheng Min Tan Yonghua Song Laboratory of Complex Systems and Intelligence Science Institute of Automation Chinese Academy of Sciences Beijing China Department of Electronic and Computer Engineering Brunei University Uxbridge UK

ISBN: (纸本)0780382730

This paper proposes an approach to analyze the stability of a class of hybrid systems with delay, where there only exists a bounded delay in continuous evolution but discrete transition occurs instantly. First, the class of hybrid systems is modeled as a hybrid automaton with delay (HAD). Based on the HAD model, the sufficient conditions of the stability for an equilibrium are presented. Furthermore, for the case where the continuous subsystems of the hybrid system are all linear time invariant systems with time delay, the linear matrix inequality (LMI) technique is employed to analyze the stability. Finally, a numerical example is presented to illustrate the developed results.

关键词： Stability analysis Delay systems Delay effects Automata Sufficient conditions Linear matrix inequalities Asymptotic stability Mathematical model Time invariant systems Differential equations

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Interaction Balance Method for Large-scale Industrial Processes With Fuzzy Constraints 1

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IFAC Proceedings Volumes 2004年第11期37卷 423-428页

作者： Jia-Chen GU Bai-Wu WAN Xiao-E RUAN Automation Research and Design Institute of Metallurgical industry Beijing P R China Systems Engineering Institute State Key Laboratory for Manufacturing Systems Engineering Xi ‘an Jiaotong University Xi'an R R China Dept.of Electrical Engineering & Computer Science Korea Advanced Institute of Science and Technology Daejeon Korea Faculty of Science Xi'an Jiaotong University Xi'an P.R.China

The interaction balance method (IBM) with fuzzy constraints is proposed for large-scale industrial processes under hierarchical steady-state optimization with the consideration of the model-reality difference and the constraints of subprocesses being flexible. In this approach, the models that are treated as equality constraints and the inequality constraints of the subprocesses are all fuzzified. Two cases of interaction balance method are studied: the open-loop IBM and the IBM with global feedback. Simulation results show that the solutions of the proposed method with global feedback are very close to the optimal solutions of the real process.

关键词： Fuzzy models large-scale systems coordination constraints hierarchical control

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New Trend in Control of Steady-state Large-scale Systems *

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IFAC Proceedings Volumes 2004年第11期37卷 455-460页

作者： Bai-Wu WAN Ding LIU Xiaoe RUAN Institute of Systems Engineering State Key Laboratory for Manufacturing Systems Engineering Xi'an Jiaotong University P.R. China School of Automation Xi'an University of Technology P.R.China Dept. of Electrical Engineering & Computer Science Korea Advanced Institute of Science and Technology 373-7 Guseong-dong Yuseong-gu Daejeon 305-701 Korea Faculty of Science Xi'an Jiaotong University P.R.China

关键词： Large-scale systems industrial control intelligent control optimization quality control

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Petri net-based design of modular supervisors for remotely human control systems

Petri net-based design of modular supervisors for remotely h...

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SICE Annual Conference

作者： Jin-Shyan Lee Meng-Chu Zhou Pau-Lo Hsu Department of Electrical & Control Engineering National Chiao Tung University Hsinchu Taiwan Department of Electrical & Computer Engineering New Jersey Institute of Technology Newark NJ USA Laboratory of Complex Systems & Intelligence Science Institute of Automation Chinese Academy of Sciences Beijing China

ISBN: (纸本)4907764227

In an Internet-based control system, particular human operations may violate desired requirements and lead to destructive failure. For such human-in-the-loop systems, this paper extends the remote supervisory scheme by Lee and Hsu (2003) to a modular one so as to reduce the supervisor synthesis complexity. Also, remote human issued commands are guaranteed to meet required specifications. A rapid thermal process in semiconductor manufacturing systems is provided to show the practicability of the proposed approach.

关键词： Humans Control systems Supervisory control Automatic control Internet Control system synthesis Rapid thermal processing Error correction Control engineering Intelligent systems

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Understanding the bacterial stringent response using reachability analysis of hybrid systems

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7th International Workshop on Hybrid Systems: Computation and Control, HSCC 2004

作者： Belta, Câlin Finin, Peter Habets, Luc C. G. J. M. Halász, Ádám M. Imieliński, Marcin Vijay Kumar, R. Rubin, Harvey Department of Mechanical Engineering Drexel University PhiladelphiaPA19101 United States General Robotics Automation Sensing and Perception Laboratory PhiladelphiaPA19101 United States Graduate Group in Computational Biology and Genomics University of Pennsylvania PhiladelphiaPA19101 United States Department of Medicine University of Pennsylvania PhiladelphiaPA19101 United States Department of Mathematics and Computer Science Eindhoven University of Technology Eindhoven Netherlands

ISBN: (纸本)3540212590

In this paper we model coupled genetic and metabolic networks as hybrid systems. The vector fields are multi affine, i.e., have only product type nonlinearities to accommodate chemical reactions, and are defined in rectangular invariants, whose facets correspond to changes in the behavior of a gene or enzyme. For such systems, we showed that reachability and safety verification problems can be formulated and solved (conservatively) in an elegant and computationally inexpensive way, based on the fact that multi-affine functions on rectangular regions of the space are determined at the vertices. Using these techniques, we study the stringent response system, which is the transition of bacterial organisms from growth phase to a metabolically suppressed phase when subjected to an environment with limited nutrients. © Springer-Verlag Berlin Heidelberg 2004.

关键词： Hybrid systems

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Unified, periodic & sampled data H/sub /spl infin// control using the delta operator

Unified, periodic & sampled data H/sub /spl infin// control ...

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IEEE Conference on Decision and Control

作者： B. Lennartson R. Middleton A.-K. Christiansson Control and Automation Laboratory Department of Signals and Systems Chalmers University of Technology Goteborg Sweden Complex Dynamic Systems & Control School of Electrical Engineering & Computer Science University of Newcastle Callaghan NSW Australia University of Trollhättan/Uddevalla Trollhattan Sweden

A unified and general framework is presented for H/sub /spl infin// control of mixed continuous-time and discrete-time time-varying (periodic) systems. Using the delta operator, a close relationship is shown between the continuous- and discrete-time solutions. No assumptions are made on certain system matrices being zero or normalized, which makes the approach general and easy to apply. A combined continuous/discrete-time lifting procedure is shown to be useful, especially for ill-conditioned systems. This procedure together with the delta formalism results in a numerically robust design method concerning both short and long sampling periods for systems with W-conditioned dynamics, including widely spread eigenvalues.

关键词： Control systems Sampling methods Riccati equations Automatic control Robustness Design methodology Eigenvalues and eigenfunctions Differential equations automation Laboratories

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Petri net modeling and lagrangian relaxation approach to vehicle scheduling in 300mm semiconductor manufacturing

Petri net modeling and lagrangian relaxation approach to veh...

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IEEE International Conference on Robotics and automation (ICRA)

作者： Da-Yin Liao MuDer Jeng MengChu Zhou Department of Information Management National Chi Nan University Nantou Taiwan Department of Electrical Engineering National Taiwan Ocean University Keelung Taiwan Laboratory of Complex Systems and Intelligence Science Institute of Automation CAS Beijing China Department of Electrical and Computer Engineering New Jersey Institute of Technology Newark USA

Instead of making decisions with fast but local dispatching functions, the increasing computing power and up-to-moment information provisioning have made possible real-time vehicle scheduling in an automated material handling environment in 300mm semiconductor manufacturing. To our best knowledge, this paper is the first work to adopt the scheduling approach to solve the 300mm vehicle transportation problems. We adopt Petri nets to model the coupling dynamics among transport jobs and OHT vehicles in an intrabay loop. The congestion phenomenon among OHT vehicles is captured. The OHT scheduling problem is then formulated into an integer programming problem whose goal is to efficiently allocate OHT vehicles to jobs such that average job delivery time is minimized. A solution methodology that combines Lagrangian relaxation and the surrogate subgradient methods [13] is developed. To reduce computational efforts in solving each subproblem optimally, an approximation method is developed to solve for subproblems. A heuristic algorithm is developed to adjust the dual solution to a feasible schedule. Numerical results demonstrate that our solution methodology can generate good schedules within a reasonable amount of computation time for realistic problems. Compared to a popular vehicle dispatching rule, our approach can achieve 25.6% improvements on the average delivery time in our realistic test cases.

关键词： Lagrangian functions Vehicles Job shop scheduling Virtual manufacturing Semiconductor device manufacture Processor scheduling Dispatching computer aided manufacturing Materials handling Manufacturing automation

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Low order sampled data H/sub /spl infin// control using the delta operator and LMIs

Low order sampled data H/sub /spl infin// control using the ...

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IEEE Conference on Decision and Control

作者： B. Lennartson R. Middleton A.-K. Christiansson T. McKelvey Control and Automation Laboratory Department of Signals and Systems Chalmers University of Technology Goteborg Sweden Complex Dynamic Systems & Control School of Electrical Engineering & Computer Science University of Newcastle Callaghan NSW Australia University of Trollhättan/Uddevalla Trollhattan Sweden Department of Signals and Systems Chalmers University of Technology Goteborg Sweden

A procedure for H/sub /spl infin// optimization of low order controllers for discrete-time and sampled-data systems is presented in this paper. Generally, low order H/sub /spl infin// controllers may be achieved by solving bilinear matrix inequalities (BMIs). In this paper an iterative alternation between two LMIs gives a suboptimal solution. To avoid local minima in this search the initial controller is obtained by a frequency weighted controller reduction scheme, where the closed loop properties of a full order controller is taken into account. A minimal number of parameters in the state space realization of the controller also reduces the complexity and improves numerical robustness. The complete presentation is based on delta operator models, which shows a close relationship between the continuous- and discrete-time solutions. The sensitivity of the ordinary discrete-time shift operator LMI formulation to small sampling periods is also analyzed.

关键词： Control systems Linear matrix inequalities Sampling methods Automatic control Frequency Weight control Robust control Signal processing State-space methods Robustness

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A general computer simulation platform for distributed multi-robot systems

A general computer simulation platform for distributed multi...

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IEEE International Conference on Robotics, Intelligent Systems and Signal Processing, RISSP 2003

作者： Mao, Xiao-Feng Cao, Zhi-Qiang Tan, Min Huang, Lin Zhang, Bin Department of Mechanics and Engineering Science Peking University Beijing100871 China Laboratory of Complex Systems and Intelligence Science Institute of Automation Chinese Academy of Sciences P. O. Box 2728 Beijing100080 China Computer Science Department University of Southern California CA90007 United States

The paper presents a general computer simulation platform CASIA-MR. Designed for simulating experiments on distributed multi-robotic systems, the platform bears virtues of generality, preciseness, facility as well as various functions such as real-time display, recording-replay and capability of supporting algorithm developing. Moreover, the platform is easy to be modified and operated. Many algorithms have been developed on this platform. © 2003 IEEE.

关键词： Real time systems

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