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International Joint Conference on Neural Networks

作者： Chunlin Chen Daoyi Dong Bo Qi Ian R. Petersen Herschel Rabitz Department of Control and System Engineering Nanjing University School of Engineering and Information Technology University of New South Wales Key Laboratory of Systems and Control Academy of Mathematics and Systems Science Chinese Academy of Sciences Department of Chemistry Princeton University

ISBN: (纸本)9781479914821

Quantum ensemble classification has significant applications in discrimination of atoms (or molecules), separation of isotopic molecules and quantum information extraction. In this paper, we recast quantum ensemble classification as a supervised quantum learning problem. A systematic classification methodology is presented by using a sampling-based learning control (SLC) approach for quantum discrimination. The classification task is accomplished via simultaneously steering members belonging to different classes to their corresponding target states (e.g., mutually orthogonal states). Numerical results demonstrate the effectiveness of the proposed approach for the discrimination of two quantum systems and the binary classification of two-level quantum ensembles.

关键词： Ensemble classification Quantum discrimination Inhomogeneous ensembles Sampling-based learning control

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Moving horizon H8 control of variable speed wind turbines with actuator saturation

Moving horizon H8 control of variable speed wind turbines wi...

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作者： Ma, Miaomiao Chen, Hong Liu, Xiangjie Allgöwer, Frank Beijing Key Laboratory of New Technology and System on Measuring and Control for Industrial Process North China Electric Power University No. 2 Beinong Road Huilongguan Changping District Beijing 102206 China Institute for Systems Theory and Automatic Control University of Stuttgart Pfaffenwaldring 9 Stuttgart 70550 Germany Department of Control Science and Engineering Jilin University Campus NanLing Renmin Strasse 5988 Changchun 130025 China

This study suggests a moving horizon H8 control scheme for variable speed wind turbines above the rated wind speed to maintain the output power at the rated value for variable operating points. A constrainedH8 control problem is solved at each sampling time with the update of not only the initial condition but also the prediction model based on different operating points. Closed-loop properties inclusive of L2 disturbance attenuation are discussed in the framework of dissipation theory. The moving horizon H8 control considers the non-linear dynamic aspect of the wind turbine, the turbulent nature of the wind and actuator saturations. Analysis and simulation results for WD34 wind turbine show possible improvements on the output electrical power regulation performance for variable operating points, while respecting actuator saturation limits. © The Institution of engineering and Technology 2014.

关键词： Wind turbines

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Implementation and test of human-operated and human-like adaptive impedance controls on Baxter robot

Implementation and test of human-operated and human-like ada...

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15th Annual Conference on Advances in Autonomous Robotics systems, TAROS 2014

作者： Liang, Peidong Yang, Chenguang Wang, Ning Li, Zhijun Li, Ruifeng Burdet, Etienne Centre for Robotics and Neural Systems School of Computing and Mathematics Plymouth University United Kingdom MOE Key Lab. of Autonomous System and Network Control College of Automation Science and Engineering South China University of Technology China State Key Laboratory of Robotics and System Harbin Institute of Technology China Department of Computer Science and Engineering Chinese University of Hong Kong Hong Kong Department of Bioengineering Imperial College of Science Technology and Medicine London United Kingdom

ISBN: (纸本)9783319104003

This paper presents an improved method to teleoperate impedance of a robot based on surface electromyography (EMG) and test it experimentally. Based on a linear mapping between EMG amplitude and stiffness, an incremental stiffness extraction method is developed, which uses instantaneous amplitude identified from EMG in a high frequency band, compensating for non-linear residual error in the linear mapping and preventing muscle fatigue from affecting the control. Experiments on one joint of the Baxter robot are carried out to test the approach in a disturbance attenuation task, and to compare it with automatic human-like impedance adaptation. The experimental results demonstrate that the new human operated impedance method is successful at attenuating disturbance, and results similarly to as automatic disturbance attenuation, thus demonstrating its efficiency. © 2014 Springer International Publishing.

关键词： Stiffness

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Robust control reconfiguration of resource allocation systems with Petri nets and integer programming

Robust control reconfiguration of resource allocation system...

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作者： Li, Jun Zhou, Mengchu Guo, Tao Gan, Yahui Dai, Xianzhong Key Laboratory of Measurement and Control of Complex Systems of Engineering Ministry of Education China School of Automation Southeast University Nanjing 210096 China Key Laboratory of Embedded System and Service Computing Ministry of Education Tongji University Shanghai 201804 China Department of Electrical and Computer Engineering New Jersey Institute of Technology Newark NJ 07102 United States

Supervisory control reconfiguration can handle the uncertainties including resource failures and task changes in discrete event systems. It was not addressed to exploit the robustness of closed-loop systems to accommodate some uncertainties in the prior studies. Such exploitation can cost-efficiently achieve reconfigurability and flexibility for real systems. This paper presents a robust reconfiguration method based on Petri nets (PNs) and integer programming for supervisory control of resource allocation systems (RASs) subject to varying resource allocation relationships. An allocation relationship is seen as a control specification while the execution processes requiring resources as an uncontrolled plant. First, a robust reconfiguration mechanism is proposed. It includes updating the P-invariant-based supervisor and evolving the state of the closed-loop system. The latter adapts to the control specification changes by the self-regulation of the closed-loop system's state. Next, two novel integer programming models for control reconfiguration are proposed, called a reconfiguration model with acceptability and reconfiguration one with specification correction. Since both models integrate the firability condition of transitions, no additional efforts are required for the state reachability analysis. Finally, a hospital emergency service system is used as an example to illustrate them. © 2014 Elsevier Ltd. All rights reserved.

关键词： Integer programming

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Explicit interpolation-based nonlinear model predictive control with a convex approximation of the feasible set

Explicit interpolation-based nonlinear model predictive cont...

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IEEE Conference on control Technology and Applications (CCTA)

作者： Alexandra Grancharova Sorin Olaru Institute of System Engineering and Robotics Bulgarian Academy of Sciences Sofia Bulgaria SUPELEC Systems Sciences (E3S) - Automatic Control Department

In this paper, an approach to explicit interpolation-based MPC of constrained nonlinear systems is proposed, which is based on the ideas in [9], [10] for explicit constrained control of linear systems by applying interpolation techniques. The developed approach can be considered as an extension of the method in [9], [10] in the following directions: (i) nonlinear discrete-time systems are considered, which are regulated to the origin by solving an NMPC problem, (ii) a method for construction of a convex approximation of the feasible set for the formulated NMPC problem is suggested, (iii) the vertex control (the control values at the vertices of the approximate feasible set) is determined by solving the NMPC problem, instead of maximizing the control action, (iv) an algorithm for explicit interpolation-based NMPC is developed, where the explicit approximate solution is defined on a simplicial partition of the convex approximate feasible set. The proposed approach is illustrated on a numerical example.

关键词： Interpolation Optimization Nonlinear systems Discrete-time systems Optimal control Approximation error

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Performance-driven adaptive output feedback control and its application to two-tank system

Performance-driven adaptive output feedback control and its ...

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International Conference on Advanced Mechatronic systems (ICAMechS)

作者： Taro Takagi Ikuro Mizumoto Junpei Tsunematsu Department of Control Engineering Maizuru National College of Technology Maizuru Kyoto JAPAN Department of Intelligent Mechanical Systems Kumamoto University Kumamoto JAPAN Mechanical System Engineering Kumamoto University Kumamoto JAPAN

The ASPRness of the controlled system can make it easy to configure an adaptive control system of simple structure by an output feedback. However, the ASPR conditions are very severe conditions for the actual systems. For this problem, an introduction of Parallel Feedforward Compensator (PFC) has been proposed, and a model-free PFC design method by the one-shot of the system's input/output data has been proposed. In this paper, we consider to apply the performance-driven adaptive control method utilizing the model-free PFC design technique to a two-tank process control and confirm the effectiveness of the proposed performance-driven adaptive output feedback method by the experiment of a two-tank process.

关键词： Output feedback Adaptive control Design methodology Tuning Process control

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Optimal set integer programming algorithm for multiple maneuvering targets tracking in clutter

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Journal of systems engineering and Electronics 2013年第4期24卷 555-563页

作者： Xiaoyan Fu Yingmin Jia Xiaohe Liu School of Mathematics and System Science Beihang University College of Information Engineering Capital Normal University Department of Systems and Control Beijing Information Science and Technology University

The aim of this paper is to solve the problems of multitarget tracking in clutter. Firstly, the data association of measurement-to-target is formulated as an integer programming problem. Through using the linear programming （LP） based branchand-bound method and adjusting the constraint conditions, an optimal set integer programming （OSIP） algorithm is then proposed for tracking multiple non-maneuvering targets in clutter. For the case of maneuvering targets, this paper introduces the OSIP algorithm into the filtering step of the interacting multiple model （IMM） algorithm resulting in the IMM based on OSIP algorithm. Extensive Monte Carlo simulations show that the presented algorithms can obtain superior estimations even in the case of high density noises.

关键词： data association target tracking integer programming clutter.

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Fault tolerant predictive control for multi-agent dynamical systems: Formation reconfiguration using set-theoretic approach

Fault tolerant predictive control for multi-agent dynamical ...

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International Conference on control, Decision and Information Technologies (CoDIT)

作者： M.T. Nguyen C. Stoica Maniu S. Olaru A. Grancharova SUPELEC Systems Sciences (E3S) - Automatic Control Department Gif-sur-Yvette France Bulgarian Academy of Sciences Institute of System Engineering and Robotics Sofia Bulgaria

This paper deals with the task assignment problem, which represents a major issue in dynamical formation control. The formation is defined in terms of a group of homogeneous dynamical agents. The position of each agent in the formation is predetermined by pre-imposing the distance between each pair of agents. Recently by using set-theoretic methods, the task assignment has been formulated in terms of an optimization problem allowing to keep the agents in a tight formation in real-time. In this paper we revisit these results and propose a new algorithm for the task assignment formulation in view of real-time control by including fault detection and isolation capabilities. The proposed methods will be illustrated by means of a numerical example.

关键词： Safety Trajectory Optimization Silicon Fault detection Equations Real-time systems

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Solving of interval DC power flow using interval Hull algorithm with preconditioning

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Dianli Xitong Zidonghua/Automation of Electric Power systems 2014年第3期38卷 130-136页

作者： Ding, Tao Guo, Qinglai Bo, Rui Gu, Wei Sun, Hongbin Zhang, Boming Department of Electrical Engineering Tsinghua University Beijing 100084 China State Key Laboratory of Control and Simulation of Power Systems and Generation Equipments Tsinghua University Beijing 100084 China Midwest Independent Transmission System Operator Inc. Saint Paul 55108 United States School of Electrical Engineering Southeast University Nanjing 210096 China

With intermittent sources integrated into the power grid, power flows of the power grid are getting stochastic. Considering the uncertainty problem of DC power flow in the high voltage transmission system, this paper recommends an interval Hull algorithm with preconditioning to solve the interval DC power flow. Firstly, the diagonal dominant interval coefficient matrix is formed by preconditioning, then the H-matrix is obtained using the interval Hull algorithm. Different approximation methods are employed for the comparison matrix of H-matrix to improve precision. And the upper and lower bound of the distribution of interval DC power flow is obtained with the iterative method. The interval Hull algorithm and Monte Carlo algorithm are compared in the 9-bus test system, the result of which shows that the uncertainty in grid parameters is the main cause of errors. Furthermore, the Hull algorithm with preconditioning, the interval Hull method, the Krawczyk operator iteration method and the Gauss elimination method are compared in terms of accuracy and computing time on an IEEE 57-bus and an IEEE 118-bus test system, respectively. It is shown that the Hull method with preconditioning has the best accuracy, and the time complexity is far lower than that of the Monte Carlo algorithm. © 2014 State Grid Electric Power Research Institute Press.

关键词： Iterative methods

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A hybrid genetic algorithm - Sequential quadratic programing approach for canting keel optimization in transverse stability of small boat design

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International Conference on Advanced engineering Theory and Applications 2013, AETA 2013

作者： Le, Tat-Hien Duy, Vo Hoang Phuong, Pham Nhat Nam, Jong-Ho Department of Naval Architecture and Marine Engineering Ho Chi Minh City University of Technology Viet Nam National Key Lab. of Digital Control and System Engineering Vietnam National University No. 19 Nguyen Huu Tho Street Ho Chi Minh City Viet Nam Faculty of Electrical and Electronics Engineering Ton Duc Thang University No. 19 Nguyen Huu Tho Street Ho Chi Minh City Viet Nam Division of Naval Architecture and Ocean Systems Engineering Korea Maritime University Busan Korea Republic of

ISBN: (纸本)9783642419676

The transverse stability is one of the most important characteristics of the ship in survivability. This factor can be influenced by wind, moving cargoes and passengers. In order to avoid maritime accidents due to parametric rolling, several ways are considered in the practical situation such as active and passive anti rolling method. The canting keel is a practical tool for the enhancement of ship stability. In the early ship design stage, this problem is considered to be multimodal objective problem. In the present research, a hybrid optimization technique, genetic algorithm - sequential quadratic programing (GA-SQP) is developed to determine the appropriate parametric values of design of canting keel. © Springer-Verlag Berlin Heidelberg 2014.

关键词： Genetic algorithms

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