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Implementation of Multiple-Input Multiple-Output Dynamic Matrix control Algorithm for Fast Processes Using Field Programmable Gate Array

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IFAC-PapersOnLine 2018年第6期51卷 324-329页

作者： Wojtulewicz, Andrzej Lawryczuk, Maciej Institute of Control and Computation Engineering Warsaw University of Technology ul. Nowowiejska 15/19 Warsaw00-665 Poland

The objective of this paper is to describe an implementation of a Dynamic Matrix control (DMC) algorithm for a Field Programmable Gate Array (FPGA). The DMC algorithm is implemented in a universal version for multiple-input multiple-output dynamic processes. The results of real experiments are presented in which the DE2i-150 development board produced by Terasic with Intel Cyclone IV GX chip is used. As the controlled process a laboratory stand especially developed for this work is used, which is a dynamic system with two manipulated inputs and two controlled outputs. The implemented DMC controller is very fast, it may be used for controlling processed which need sampling periods of a millisecond order. © 2018

关键词： Field programmable gate arrays (FPGA) Codes (symbols) Feedback control Logic gates MIMO systems Model predictive control Storms Telecommunication repeaters controlled process Dynamic matrix control Dynamic matrix control algorithms Dynamic process Fast process Sampling period

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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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Iterative learning control of deflections in vibrating beam

Iterative learning control of deflections in vibrating beam

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International Conference on Methods and Models in Automation and Robotics (MMAR)

作者： Kamil Klimkowicz Robert Maniarski Maciej Patan Institute of Control and Computation Engineering University of Zielona Góra Zielona Góra Poland

The paper discuss an effective approach to iterative learning control synthesis for a class of distributed parameter systems described by partial differential equations with biharmonic operator. The study is carried out based on the example of transverse displacements in a cantilever beam induced by the external loads. The sufficient conditions for the convergence of the proposed iterative control law are formulated. Also, the resulting control learning scheme supported by effective implementation based on the finite element method was investigated subject to the different configurations of actuator/sensor field.

关键词： Mathematical model Convergence Process control Sensors Displacement measurement Iterative learning control control design

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Design of distributed robust control of 1D-spatially interconnected systems in the repetitive process setting

Design of distributed robust control of 1D-spatially interco...

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International Conference on Methods and Models in Automation and Robotics (MMAR)

作者： Robert Maniarski Kamil Klimkowicz Wojciech Paszke Institute of Control and Computation Engineering University of Zielona Góra Zielona Góra Poland

In this paper we consider the H∞ controller design problem for uncertain differential linear repetitive processes via full order dynamic output feedback controllers. The existence condition of desired robust H∞ controllers is expressed as a feasibility problem of a linear matrix inequality (LMI). Then it is shown that the developed results can be applied to robust distributed controller design for 1D-spatially interconnected systems that are composed of several linear continuous-time subsystems, where each directly interacts with neighbouring subsystems. A simulation based case study on the model of a vehicle platoons system is given to demonstrate the feasibility and effectiveness of the new designs.

关键词： Process control Symmetric matrices Interconnected systems Stability analysis Decentralized control Uncertainty Vehicle dynamics

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Fixed-point self-tuning CPU performance controller for Linux kernel

Fixed-point self-tuning CPU performance controller for Linux...

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International Conference on High Performance Computing & Simulation (HPCS)

作者： Michał Getka Michał Karpowicz Institute of Control and Computation Engineering Warsaw University of Technology Nowowiejska 15/19 Warsaw Poland

ISBN: (数字)9781728144849

ISBN: (纸本)9781728144856

Power saving techniques based on dynamic voltage and frequency scaling (DVFS) allow to optimize performance of processors capable of operating in more and more energy-efficient operating modes. In this paper we propose a new design of DVFS-based self-tuning CPU performance controller for the Linux kernel. The controller autonomously adapts to currently observed model of CPU load dynamics and adjusts CPU performance level to compensate for load variations while optimizing energy efficiency of performed operations.

关键词： Power demand Performance evaluation Program processors Load modeling Linux Task analysis Mathematical model

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Robust unknown input observer design for simultaneous actuator and sensor faults

Robust unknown input observer design for simultaneous actuat...

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International Conference on Methods and Models in Automation and Robotics (MMAR)

作者： Marcin Pazera Marcin Witczak Norbert Kukurowski Institute of Control and Computation Engineering University of Zielona Góra Zielona Góra Poland

The paper deals with the problem of simultaneous estimation of the state as well as the sensor and actuator faults. The proposed approach is developed in such a way that it allows decoupling the actuator faults from the state. In a similar fashion, the sensor fault is derived directly from the output. Moreover, the quadratic boundedness approach is utilised for guaranteeing the robust stability of the observer. It supposes that the uncertainty are limited within an ellipsoidal set. The final part of the paper shows the illustrative example with the implementation to the laboratory multi-tank system.

关键词： Actuators Observers Estimation error Stability analysis Robust stability Uncertainty

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Constrained actuator fault tolerant control with the application to a wind turbine

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IFAC-PapersOnLine 2018年第24期51卷 1157-1163页

作者： Witczak, Piotr Pazera, Marcin Patan, Krzysztof Witczak, Marcin Institute of Control and Computation Engineering University of Zielona Góra ul. Szafrana 2 Zielona Góra65-519 Poland

The paper deals with an actuator fault tolerant control (FTC) under constraints for wind turbines. The main issue is to keep a desired value of turbine efficiency coefficient and minimization of tip-speed-ratio. The proposed strategy relies on following stages: a fault is estimated first and then it is compensated with a robust controller. If the compensation is not sufficient, the invariant-set FTC is employed and predictive scheme is utilized. The main goal of predictive approach is to enhance the domain of attraction of a faulty wind turbine. The paper introduces the wind turbine system, benchmark environment and specifies the methodology of solving the formulated FTC problem. The paper presents also application of the considered FTC system to a wind turbine with a special attention on the realization of the following steps of the FTC procedure. © 2018

关键词： Wind turbines Actuators controllers Fault tolerance Actuator fault Domain of attraction Fault estimation Fault tolerant control Robust controllers Tip speed ratio Turbine efficiency Wind turbine systems

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A mixed H2/H∞ approach to robust actuator fault estimation

A mixed H2/H∞ approach to robust actuator fault estimation

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American control Conference

作者： Mariusz Buciakowski Marcin Witczak Marcin Pazera Faculty of Computer Electrical and Control Engineering Institute of Control & Computation Engineering The University of Zielona Gora ul. Szafrana 265-516 Zielona Gora Poland

ISBN: (纸本)9781538679012;9781538679265

The main objective of the paper is to provide an actuator fault estimation scheme, which takes into account various uncertainty sources. In particular, they are divided into three groups: sensor measurement noise, process external exogenous disturbances as well as unknown fault dynamics. Contrarily to the approaches presented in the literature, they are not treated in the same waybut analyzed separately in a tailored fashion. Irrespective of the uncertainty source, the common approach is to minimize its effect on the fault estimation error in either H_2 or H_∞ sense. As a result, a mixed performance-based actuator fault estimation scheme is obtained and its convergence is carefully analyzed as well. The final part of the paper presents results obtained for the DC servo-motor and compares the proposed approach with an alternative one.

关键词： actuators Converge Servo Device Component

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Maximally entangled states of (d, ∞) quantum systems: some numerical studies

arXiv

引用

arXiv 2019年

作者： Gielerak, Roman Sawerwain, Marek Institute of Control & Computation Engineering University of Zielona Góra Licealna 9 ZielonaGóra 65-417 Poland Institute of Control & Computation Engineering University of Zielona Góra Licealna 9 ZielonaGóra 65-417 Poland

Gram matrix approach to an entanglement analysis of pure states describing (d, ∞) – quantum systems is being introduced. In particular, maximally entangled states are described as those having a special forms of the... 详细信息

关键词： Quantum optics

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Methodology of Designing Multi-agent Robot control Systems Utilising Hierarchical Petri Nets

arXiv

引用

arXiv 2019年

作者： Figat, Maksym Zieliński, Cezary Warsaw University of Technology Institute of Control and Computation Engineering Nowowiejska 15/19 Warsaw00-665 Poland

A robot system is designed as a set of embodiedagents. An embodied agent is decomposed into cooperating subsystems. In our previous work activities of subsystems were defined by hierarchical finite state machines. With their states activities were associated. In that approach communication between subsystems was treated as an implementation issue. This paper represents activities of a robot system using hierarchical Petri nets with conditions. Such net is created by specifying consecutive layers: multi-agent robot system layer, agent layer, subsystem layer, behaviour layer and communication layer. This decomposition not only organizes in a systematic manner the development of a robot system, but also introduces a comprehensive description of concurrently acting subsystems. Based on those theoretical considerations, a tool was created for producing hierarchical Petri nets defining the model of a robotic system and enabling automatic generation of the robot controller code, resulting in a significant acceleration of the implementation phase. The capabilities of the tool are presented by the development of a robot controller performing a rudimentary task. Copyright © 2019, The Authors. All rights reserved.

关键词： Multi agent systems

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