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Design of an integrated actuator fault-tolerant control under robust performance requirements ⁎

IFAC-PapersOnLine 2020年第2期53卷 13745-13750页

作者： Mariusz Buciakowski Marcin Witczak Marcin Pazera Institute of Control & Computation Engineering The University of Zielona Góra ul. Szafrana 2 65-516 Zielona Góra Poland

The paper concerns a development of an integrated design of fault estimation and control scheme within an integrated actuator fault-tolerant control framework. The integrated design boils down to avoiding a standard three-step fault diagnosis (detection, isolation, identification) and replacing it by a fault estimation. Subsequently, the inaccuracies caused by fault estimation are taken into account while designing fault-tolerant controller. Contrarily to the usual framework, which extends the set of disturbances/noise by such inaccuracies, they are taken into account individually in such a way as to achieve a well-balanced final control effect. Finally, a complete fault-tolerant design procedure is provided along with its convergence analysis. The last part of the paper shows the performance of the proposed approach using a DC-servo motor benchmark example.

关键词： Fault-tolerant Observer design Robust control Fault detection diagnosis

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Sensor Selection with Nonsmooth Design Criteria Based on Semi-Infinite Programming

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IFAC-PapersOnLine 2020年第2期53卷 7539-7544页

作者： Dariusz Uciński Institute of Control and Computation Engineering University of Zielona Góra ul. Szafrana 2 65-516 Zielona Góra Poland

A problem of optimal node activation in large-scale sensor networks is considered. The resulting measurements are supposed to be used to estimate unknown parameters of a spatiotemporal process described by a partial differential equation. In this setting, the sensor subset selection problem may quickly become computationally intractable when an excessively complex sensor location algorithm is employed. The is even more pronounced when the design criterion is nondifferentiable. A vital example of this criterion is the sum of an arbitrary number of smallest eigenvalues of the Fisher information matrix, being a generalization of the well-known E-optimality criterion. A simple branch-and-bound algorithm is exposed here to maximize this criterion. Its key component to produce upper bounds to the maximum of the objective function implements a relaxation procedure for solving semi-infinite programming problems. It alternates between solving a linear programming subproblem and evaluation of the eigenvalues and eigenvectors of the current information matrix, which makes it extremely easy to implement. The paper is complemented with a numerical example of computing actual sensor locations.

关键词： distributed parameter systems parameter estimation optimal experiment design sensor systems global optimization

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Quantum router for qutrit networks 27th

Quantum router for qutrit networks

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27th International Conference on Computer Networks, CN 2020

作者： Sawerwain, Marek Wiśniewska, Joanna Institute of Control and Computation Engineering University of Zielona Góra Licealna 9 Zielona Góra65-417 Poland Institute of Information Systems Faculty of Cybernetics Military University of Technology Gen. S. Kaliskiego 2 Warsaw00-908 Poland

ISBN: (纸本)9783030507183

Networks of quantum circuits or, more generally, networks transmitting quantum information will need, just like classical networks (e.g. internet), a mechanism for directing data to adequate nodes. Routing, understood as packet switching, is one of the most important processes in classical networks. The issue of routing is also present in quantum networks and an appropriate construction of a quantum router is required to transfer data to specific points in the network. We describe an implementation of a router for qutrits in this chapter. The router is four-qutrit quantum circuit (with one controlling unit). The efficiency and the accuracy of router’s work is tested by the Fidelity measure. The circuit’s dynamics is expressed by a Hamiltonian where the role of generalized Pauli operators is played by the Gell-Mann operators. © Springer Nature Switzerland AG 2020.

关键词： Quantum optics

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A New LMI-Based controller Design Method for Uncertain Differential Repetitive Processes 1

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20th Polish control Conference, PCC 2020

作者： Maniarski, Robert Paszke, Wojciech Rogers, Eric Institute of Control and Computation Engineering University of Zielona Góra Szafrana 2 Zielona Góra65-516 Poland Institute of Automation Electronic and Electrical Engineering University of Zielona Góra Szafrana 2 Zielona Góra65-516 Poland School of Electronics and Computer Science University of Southampton SouthamptonSO17 1BJ United Kingdom

ISBN: (数字)9783030509361

ISBN: (纸本)9783030509354

The paper develops new results on stability analysis and control law design for differential linear repetitive processes. These results are based on new dilated LMI characterizations for stability along the pass where auxiliary slack variables with full structure are employed. This provides additional flexibility to the solution. The results are also easily extended to processes with norm-bounded uncertainties. It is also shown that the generalized Kalman-Yakubovich-Popov lemma can be used to obtain stability and controller design procedures in which performance specifications are imposed over finite frequency ranges. Sufficient conditions for the existence of a robust controller in this setting are established. Finally, a simulation example is given to illustrate the merits of the new design. © 2020, Springer Nature Switzerland AG.

关键词： Linear matrix inequalities

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Reachability tree in liveness analysis of Petri net-based cyber-physical systems

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AIP Conference Proceedings 2022年第1期2611卷

作者： Mateusz Popławski Marcin Wojnakowski Grzegorz Bazydło Remigiusz Wiśniewski Institute of Control and Computation Engineering University of Zielona Góra ul. prof. Z. Szafrana 2 65-516 Zielona Gora Poland

Liveness is one of the crucial properties in the analysis of the Petri net-based cyber-physical systems. The paper proposes two algorithms related to the analysis of the liveness. The first one is dedicated to the construction of the reachability tree of the analysed Petri net, and the second one to the analysis of the liveness of the net (based on the generated reachability tree). Operation of both algorithms was explained with the use of the multi-robot CPS case-study.

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线性连续重复过程的区域极点约束迭代学习控制

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华南理工大学学报（自然科学版） 2020年第1期48卷 114-122页

作者：汪磊杨慧中陶洪峰 Wojciech Paszke 江南大学教育部轻工过程先进控制重点实验室江苏无锡214122 Institute of Control and Computation Engineering University of Zielona Goraul.Szafrana 265-516 Zielona GoraPoland

现有的迭代学习控制研究关注于迭代学习控制系统在迭代批次方向的鲁棒收敛性,对控制系统在时间方向上的性能关注较少,没有展现出控制系统的动态特征。文中研究了有限频域范围线性连续重复过程在区域极点约束下的迭代学习控制问题。首先... 详细信息

现有的迭代学习控制研究关注于迭代学习控制系统在迭代批次方向的鲁棒收敛性,对控制系统在时间方向上的性能关注较少,没有展现出控制系统的动态特征。文中研究了有限频域范围线性连续重复过程在区域极点约束下的迭代学习控制问题。首先,结合二维系统理论,在时域中建立迭代学习控制系统的二维连续Roesser模型;然后基于Kalman-Yakubovich-Popov(KYP)引理,分析迭代学习控制系统的跟踪性能和区域极点约束问题;进而以线性矩阵不等式的形式给出控制器存在的充分条件,保证系统在批次方向和时间方向的性能,并将结果扩展到结构不确定性模型中;最后,通过典型的跟踪伺服系统执行机构的控制仿真验证了设计方案的有效性和可行性。

关键词：线性连续重复过程区域极点约束迭代学习控制 Kalman-Yakubovich-Popov引理

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Trusted and secure e-service based on the durable medium and blockchain technology

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AIP Conference Proceedings 2022年第1期2611卷

作者： Kamil Kozdrój Grzegorz Bazydło Remigiusz Wiśniewski Jacek Starościc 1Perceptus Sp. z o.o. ul. Nowy Kisielin – Antoniego Wysockiego 10 66-002 Zielona Góra Poland 2Institute of Control and Computation Engineering University of Zielona Góra ul. prof. Z. Szafrana 2 65-516 Zielona Gora Poland

The paper proposes a trusted and secure e-service that can be treated as a durable medium. The presented approach utilizes a blockchain database (managed by the trusted third party) combined with the cryptographic methods (signing with an electronic seal and data encryption). The service is mainly oriented towards the large financial institutions (e.g., banks) that require agreements on a document with a large number of customers, but it can also be applied for other enterprises or industrial areas.

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Safeness analysis of Petri net-based cyber-physical systems based on the linear algebra and parallel reductions

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AIP Conference Proceedings 2022年第1期2611卷

作者： Marcin Wojnakowski Mateusz Popławski Remigiusz Wiśniewski Grzegorz Bazydło Institute of Control and Computation Engineering University of Zielona Góra ul. prof. Z. Szafrana 2 65-516 Zielona Góra Poland.

A safeness analysis technique of a Petri net-based control part of cyber-physical system (CPS) is presented in the paper. The idea is based on the initial parallel reduction of a net, and further computation of the state machine components in the system. The effectiveness and efficiency of the proposed concept have been verified experimentally, with a set of 243 benchmarks (test modules). The method is especially dedicated (but not limited) to the Petri net-based models of the control part of CPS.

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New relaxed stability and stabilization conditions for differential linear repetitive processes ⁎

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IFAC-PapersOnLine 2020年第2期53卷 1462-1467页

作者： Robert Maniarski Wojciech Paszke Eric Rogers Marcin Boski Institute of Control and Computation Engineering University of Zielona Góra ul. Szafrana 2 65-516 Zielona Góra Poland School of Electronics and Computer Science University of Southampton Southampton SO17 1BJ UK

The paper develops new results on the stability analysis of differential linear repetitive processes. These processes are a distinct class of two-dimensional systems that arise in the modelling of physical processes and also the existing systems theory for them can be used to effect in solving control problems for other classes of systems, including iterative learning control design. This paper uses a version of the Kalman-Yakubovich-Popov Lemma to develop relaxed conditions for the stability property in terms of linear matrix inequalities. The main result is reduced conservatism in applying tests for the stability property with an extension to control law design. A numerical example to illustrate the application of the new results is also given.

关键词： Repetitive processes stability along the pass linear matrix inequalities finite frequency domain

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Master equations and quantum trajectories for squeezed wave packets

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Physical Review A 2022年第2期105卷 023721-023721页

作者： Jonathan A. Gross Ben Q. Baragiola T. M. Stace Joshua Combes Institut Quantique Université de Sherbrooke Sherbrooke Quebec Canada J1K 2R1 Center for Quantum Information and Control University of New Mexico Albuquerque New Mexico 87131-0001 USA Yukawa Institute for Theoretical Physics Kyoto University Kitashirakawa Oiwakecho Sakyo-ku Kyoto 606-8502 Japan Centre for Quantum Computation and Communication Technology School of Science RMIT University Melbourne Victoria 3000 Australia ARC Centre for Engineered Quantum System Department of Physics University of Queensland Brisbane Queensland 4072 Australia Department of Electrical Computer and Energy Engineering University of Colorado Boulder Boulder Colorado 80309 USA

The interaction between matter and squeezed light has mostly been treated within the approximation that the field-correlation time is small. Methods for treating squeezed light with more general correlations currently involve explicitly modeling the systems producing the light. We develop a general purpose input-output theory for a particular form of narrowband squeezed light, a squeezed wave-packet mode, that only concerns the statistics of the squeezed field and the shape of the wave packet. This formalism allows us to derive the input-output relations and the master equation. We also consider detecting the scattered field using photon counting and homodyne measurements, which necessitates the derivation of the stochastic master equation. The non-Markovian nature of the field manifests itself in the master equation as a coupled hierarchy of equations. We illustrate these with consequences for the decay and resonance fluorescence of two-level atoms in the presence of such fields.

关键词： Open quantum systems Squeezing of quantum noise Stochastic processes

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