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15th International Symposium on Electronics and Telecommunications, ISETC 2022

作者： Beguni, Catalin Zadobrischi, Eduard Avatamanitei, Sebastian-Andrei Cailean, Alin-Mihai Department of Computers Electronics and Automation Stefan Cel Mare University of Suceava Suceava720229 Romania Integrated Center for Research Development and Innovation in Advanced Materials Nanotechnologies and Distributed Systems for Fabrication and Control Stefan Cel Mare University of Suceava Suceava Romania Technical University of Cluj-Napoca Cluj-Napoca Romania Laboratoire D Ingénierie des Systèmes de Versailles Paris-Saclay University Vélizy-Villacoublay78140 France

ISBN: (纸本)9781665451505

In the context in which pedestrians are the most exposed road user category in urban areas, this paper presents the results of an experimental demonstration of a new system designed to assist pedestrians in safely using a crosswalk. The proposed architecture consists of a pedestrian detection and localization unit that detects pedestrians in the crosswalk area, a visible light communications component that transmits this information toward the approaching vehicles using the visible light communications technology and a graphical user interface that enables the driver to receive relevant traffic safety information. The experimental investigation has shown that based on a multi-sensor data fusion approach, pedestrians are detected with an overall 100% detection rate, whereas the low power crosswalk sign VLC emitter can provide a communication range of up to 27 ― 40 meters, with a data rate of 100 kb/s and a BER in the 10-7― 10-4 range. Therefore, the experimental results indicate that the proposed VLC system has high performance in traffic situations that could pose serious issues to other concepts. © 2022 IEEE.

关键词： Visible light communication

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Efficient Stochastic Optimal control through Approximate Bayesian Input Inference

arXiv

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arXiv 2021年

作者： Watson, Joe Abdulsamad, Hany Findeisen, Rolf Peters, Jan The Intelligent Autonomous Systems Group Technical University of Darmstadt Germany The Finnish Centre of AI The Electrical Engineering and Automation Department Aalto University Finland The Control and Cyber-Physical Systems Laboratory Technical University of Darmstadt Germany

Optimal control under uncertainty is a prevailing challenge for many reasons. One of the critical difficulties lies in producing tractable solutions for the underlying stochastic optimization problem. We show how advanced approximate inference techniques can be used to handle the statistical approximations principled and practically by framing the control problem as a problem of input estimation. Analyzing the Gaussian setting, we present an inference-based solver that is effective in stochastic and deterministic settings and was found to be superior to popular baselines on nonlinear simulated tasks. We draw connections that relate this inference formulation to previous approaches for stochastic optimal control and outline several advantages that this inference view brings due to its statistical nature. Copyright © 2021, The Authors. All rights reserved.

关键词： Stochastic systems

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Fatigue Life Analysis of Piezoelectric Actuating Mechanism with Micro-displacement Amplifier

Fatigue Life Analysis of Piezoelectric Actuating Mechanism w...

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IEEE Conference on Industrial Electronics and Applications (ICIEA)

作者： Xinyuan Zhang Shaoping Wang Xiao Wu Siyuan He Xingjian Wang Yu Niu Alex I. Gavrilov School of Automation Science and Electrical Engineering Beihang University Beijing China Tianmushan Laboratory Xixi Octagon City China Ningbo Institute of Technology Beihang University Ningbo China Research Institute of Aero-Engine Beihang University Beijing China Department of Automatic Control Systems Bauman Moscow State Technical University Moscow Russia

Since piezoelectric actuating mechanism generally operate in high frequency response state, fatigue life has become an important factor influencing the performance and reliability of the entire drive mechanism. In order to investigate whether the designed piezoelectric ceramic actuator meets the active control requirements of the aero-engine, the paper analyzes the fatigue characteristics and fatigue life of the piezoelectric ceramic materials and the micro displacement amplification mechanism with finite element analysis softwareˈ and the optimal spacing value is obtained by studying the effect of the flexible hinge spacing on the fatigue characteristics of the displacement amplifier. And then, the fatigue life of the displacement amplifier is analyzed based on the drive load spectrum of the aircraft during simulated flight, whose result is 340.93 hours. Finally, the fatigue life of the piezoelectric actuating mechanism is 32 minutes when loaded with full power, which meets the design target initially.

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Hardware-in-the-Loop Simulation of Vehicle-Manipulator systems for Physical Interaction Tasks

Hardware-in-the-Loop Simulation of Vehicle-Manipulator Syste...

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IEEE/RSJ International Conference on Intelligent Robots and systems (IROS)

作者： Hemjyoti Das Bjørn Kåre Sæbø Kristin Y. Pettersen Christian Ott Faculty of Electrical Engineering and Information Technology Automation and Control Institute (ACIN) Technical University of Vienna TU Wien Vienna Austria Department of Engineering Cybernetics Centre for Autonomous Marine Operations and Systems (NTNU AMOS) NTNU Norwegian University of Science and Technology Trondheim Norway German Aerospace Center Institute of Robotics and Mechatronics Wessling Germany

Hardware-in-the-loop simulation (HILS) allows a more realistic evaluation of control approaches than what is possible with pure software simulations, but without the actual complexity of the complete system. This is important for some complex systems such as orbital robots, where testing of the system is typically not possible after its launch, and an on-ground replica is used to validate the performance of such a system. In this article, an impedance-matching approach is presented to match the end-effector dynamics of a fixed-base robot manipulator with that of a target vehicle-manipulator system (VMS), while taking into account the redundant nullspace dynamics in a connected real-time simulation framework. This approach ensures that the forces and torques exerted by the system on the environment matches with that of the simulated system. The contact wrenches used in our approach are not obtained from numerical simulations, but rather from real physical interaction, which is one of the main advantages of our approach. The effectiveness of our method is validated by demonstrating various physical interaction tasks with the environment, using a suspended aerial manipulator as the target system.

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The Using of Deep Neural Networks and Acoustic Waves Modulated by Triangular Waveform for Extinguishing Fires 1

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International Workshop on New Approaches for Multidimensional Signal Processing, NAMSP 2020

作者： Ivanov, Stefan Stankov, Stanko Wilk-Jakubowski, Jacek Stawczyk, Pawel Department of Automation Information and Control Systems Technical University of Gabrovo 4 H. Dimitar Gabrovo5300 Bulgaria Department of Information Systems Kielce University of Technology 7 Tysiąclecia Państwa Polskiego. Ave. Kielce25-314 Poland Department of Industrial Electrical Engineering Kielce University of Technology 7 Tysiąclecia Państwa Polskiego. Ave. Kielce25-314 Poland

ISBN: (数字)9789813346765

ISBN: (纸本)9789813346758

Current article introduces a new approach for detection of fires based on deep neural network (DNN) and their extinguishing using an acoustic fire extinguisher. Finding fires on video stream is based on low-cost hardware platform containing Movidius stick for hardware acceleration of the DNN used for fire detection. For this purpose, the fire extinguisher uses a sinusoidal acoustic wave modulated by a triangular waveform. The special design of the extinguisher guarantees that the sound pressure level will be sufficient for successful extinguishing of the fire in distance up to 130 cm. © 2021, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.

关键词： Deep neural networks

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Fractional Order control of the Combined Anaesthesia-Hemodynamic System: a Preliminary Study

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IFAC-PapersOnLine 2021年第15期54卷 19-24页

作者： Erwin Hegedus Isabela Birs Cristina Muresan Automation Department Technical University of Cluj-Napoca 400144 Romania DySC research group on Dynamical Systems and Control Ghent University EEDT group member of Flanders Make consortium B-9052 Ghent Belgium

Most surgical interventions involve sedating the patient with a cocktail of substances having anesthetic effects. The procedure is usually performed by a medical doctor that continuously monitors and readjusts drug dosage with respect to the patient’s response. Current advances in automatic control and biomedical engineering offer the possibility to reassign the anesthetist’s task to real-time, highly-performant monitoring and control algorithms, with the purpose of providing a risk-free anesthetic experience. The present study combines the well-known benefits of fractional calculus in biomedical applications with the intricate tasks revolving around automatic anesthesia. The proposed fractional order control algorithms are developed based on an open-source patient simulator that combines hemodynamics and anesthesia in a single customizable framework. Testing and validation of the proposed strategy is successfully performed on a group of 24 different patients in the presence of surgical stimulus. The ultimate result is that the hemodynamic characteristics are kept within accepted ranges, while a certain level of anesthesia is achieved.

关键词： fractional calculus hemodynamics control anesthesia control surgical stimulus automatic control

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The Hybrid Structure of a Self-Dual Built-In control Circuit for Combinational Devices with Pre-Compression of Signals and Checking of Calculations by Two Diagnostic Parameters

The Hybrid Structure of a Self-Dual Built-In Control Circuit...

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2021 IEEE East-West Design and Test Symposium, EWDTS 2021

作者： Efanov, Dmitrii V. Pivovarov, Dmitrii V. Peter the Great St. Petersburg Polytechnic University Deputy General Director for Research of Scientific and Technical Center 'Integrated Monitoring Systems' LLC St. Petersburg Russia State Transport University Emperor Alexander I St. Petersburg Automation and Remote Control on Railways Department St. Petersburg Russia

ISBN: (纸本)9781665445030

The authors propose to use the concurrent checking approach for two diagnostic parameters with preliminary compression of signals from the diagnosed objects outputs when synthesizing self-checking digital devices. A hybrid structure of a self-dual built-in control circuit is presented. The advantages and disadvantages of the proposed structure are described. The main advantage of the proposed solution is the ability to reduce the structural redundancy of the self-checking device by using a compression circuit with a high detecting ability of the check circuit. As the main disadvantage, we emphasize the possibility of error concealment at the outputs of the signal compression elements. The paper discusses ways to eliminate the noted disadvantage in the form of circuitry methods. Experiments carried out with the MCNC Benchmarks system of combinational benchmarks have shown the high efficiency of the proposed approach for organizing built-in control circuits. We describe the features of the implementation of the proposed hybrid structure in the Logisim simulation environment, allowing other researchers to repeat the experiments and develop the results obtained. © 2021 IEEE.

关键词： Digital devices

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Departure Counting Process in a Finite-Buffer Queue with Batch Arrivals and Multiple Vacation Policy

SSRN

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SSRN 2024年

作者： Marjasz, Rafal Kempa, Wojciech M. Kovtun, Viacheslav Institute of Theoretical and Applied Informatics Polish Academy of Sciences 5 Baltycka Str. Gliwice44-100 Poland Silesian University of Technology Faculty of Applied Mathematics 23 Kaszubska Str. Gliwice44-100 Poland Vinnytsia National Technical University Faculty of Intelligent Information Technologies and Automation Department of Computer Control Systems 95 Khmelnitske Shose Str. Vinnytsia21000 Ukraine

The study investigates the departure counting process in a finite-buffer queueing system with batch arrivals and multiple vacation policy. A representation for the mixed double transform of the number of departures up to the fixed time moment is obtained in the explicit form applying analytic approach based on integral equations and linear algebra. Numerical study is attached that focuses on understanding the impact of various system parameters on the behaviour of the mean number of packets processed within a fixed time frame. Utilizing numerical experiments, the study examines the influence of vacation duration, initial buffer state, arrival intensity, and processing rate on the departure process. Results reveal significant dependencies between these parameters and the transient behaviour of the queueing system. Notably, the service speed parameter demonstrates the most substantial influence on the mean number of processed packets, followed by the arrival rate. Conversely, variations in vacation duration and initial packet count exhibit comparatively minor effects on system behaviour. Overall, the findings provide valuable insights into the dynamics of departure processes in finite-buffer queue systems with batch arrivals and multiple vacation policies, offering implications for system optimization and performance enhancement strategies. © 2024, The Authors. All rights reserved.

关键词： Integral equations

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automation Software Architecture in CPPS - Definition, Challenges and Research Potentials

Automation Software Architecture in CPPS - Definition, Chall...

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Industrial Cyber-Physical systems (ICPS)

作者： Birgit Vogel– Heuser Eva– Maria Neumann Juliane Fischer Marga Marcos Elisabet Esté vez Esté vez Giacomo Barbieri Lisa Sonnleithner Rick Rabiser Institute of Automation and Information Systems TUM School of Engineering and Design Core Member of MDSI Member of MIRMI Technical University of Munich Garching Germany Institute of Automation and Information Systems TUM School of Engineering and Design Technical University of Munich Garching Germany Department of Automatic Control and System Engineering ETSI Bilbao Basque Country University Bilbao Spain Electronics and Automation Engineering Department University of Ja&#x00E9 n Ja&#x00E9 n Spain Department of Mechanical Engineering Universidad de los Andes Bogot&#x00E1 Colombia CDL VaSiCS LIT CPS Lab Johannes Kepler University Linz Linz Austria

The importance of a mature, maintainable design of automation software in Cyber-Physical Production systems (CPPS) is continuously increasing since a growing proportion of the system functionality is implemented via software. As a result, system complexity is shifting more and more towards the software side. Quality characteristics such as flexibility, maintainability, and extensibility, whose importance is increasing in the context of Industry 4.0, are thus becoming harder to achieve. These challenges can only be solved through sound architectural design. While there is a common understanding of good software architecture and appropriate methods to achieve it in computer science, a suitable architecture definition for automation software that takes all relevant factors into account is still missing in the field of CPPS. Therefore, based on a workshop with international scientists with different perspectives on CPPS, this paper presents influencing factors on automation software architecture. On this basis, a joint definition for software architecture in CPPS, as well as challenges and future research potentials, are derived.

关键词： Computer science Production systems Software architecture Conferences Computer architecture Cyber-physical systems Software

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Design of Adaptive Fuzzy PID controller for Electropneumatic System 25

Design of Adaptive Fuzzy PID Controller for Electropneumatic...

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25th Scientific Conference on Power Engineering and Power Machines, PEPM 2020

作者： Ormandzhiev, Krasimir Yordanov, Stanimir Technical University of Gabrovo Department of Power Engineering 4 H. Dimitar str. Gabrovo5300 Bulgaria Technical University of Gabrovo Department of Automation Information and Control Systems 4 H. Dimitar str. Gabrovo5300 Bulgaria

The purpose of the study is to develop an adaptive electropneumatic automatic system based on the classical PID controller using modern technology for controlling like fuzzy controlling. The need of an adaptive setting occurred because of the fact that the classic controller has high sensitivity towards interferences with the main signal and the need for the parameters to be regulated often and be done by hand. Another reason is the inability to provide optimal parameters for the controller for nonlinear processes and changes of the parameters in time. In this article the work of electropneumatic system with linear actuator, is examined. A mathematical model describing the dynamics of the processes, is developed. An adaptive fuzzy PID controller with variable coefficients is synthesized. The system is studied in the environment of Matlab Simulink. The transient processes in the system are compared to processes where the classical PID controller. The results are presented in graphical form. © 2020 The Authors, published by EDP Sciences.

关键词： controllers

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