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Learning Reduced-Order Linear Parameter-Varying Models of Nonlinear Systems ⁎

IFAC-PapersOnLine 2024年第15期58卷 265-270页

作者： Patrick J.W. Koelewijn Rajiv Singh Peter Seiler Roland Tóth Sioux Technologies B.V. Eindhoven The Netherlands Control Systems Group Eindhoven University of Technology Eindhoven The Netherlands The MathWorks Inc. Natick USA Department of Electrical Engineering and Computer Science University of Michigan Ann Arbor USA Systems and Control Laboratory HUN-REN Institute for Computer Science and Control Budapest Hungary

In this paper, we consider the learning of a Reduced-Order Linear Parameter-Varying Model (ROLPVM) of a nonlinear dynamical system based on data. This is achieved by a two-step procedure. In the first step, we learn a projection to a lower dimensional state-space. In step two, an LPV model is learned on the reduced-order state-space using a novel, efficient parameterization in terms of neural networks. The improved modeling accuracy of the method compared to an existing method is demonstrated by simulation examples.

关键词： Reduced-order modeling Neural Networks Linear Parameter-Varying Models

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Exploiting Trust for Resilient Hypothesis Testing with Malicious Robots (evolved version)

arXiv

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arXiv 2023年

作者： Cavorsi, Matthew Akgün, Orhan Eren Yemini, Michal Goldsmith, Andrea Gil, Stephanie The School of Engineering and Applied Sciences Harvard University United States The Faculty of Engineering Bar-Ilan University Israel The Department of Electrical and Computer Engineering Princeton University United States

We develop a resilient binary hypothesis testing framework for decision making in adversarial multi-robot crowdsensing tasks. This framework exploits stochastic trust observations between robots to arrive at tractable, resilient decision making at a centralized Fusion Center (FC) even when i) there exist malicious robots in the network and their number may be larger than the number of legitimate robots, and ii) the FC uses one-shot noisy measurements from all robots. We derive two algorithms to achieve this. The first is the Two Stage Approach (2SA) that estimates the legitimacy of robots based on received trust observations, and provably minimizes the probability of detection error in the worst-case malicious attack. Here, the proportion of malicious robots is known but arbitrary. For the case of an unknown proportion of malicious robots, we develop the Adversarial Generalized Likelihood Ratio Test (A-GLRT) that uses both the reported robot measurements and trust observations to estimate the trustworthiness of robots, their reporting strategy, and the correct hypothesis simultaneously. We exploit special problem structure to show that this approach remains computationally tractable despite several unknown problem parameters. We deploy both algorithms in a hardware experiment where a group of robots conducts crowdsensing of traffic conditions on a mock-up road network similar in spirit to Google Maps, subject to a Sybil attack. We extract the trust observations for each robot from actual communication signals which provide statistical information on the uniqueness of the sender. We show that even when the malicious robots are in the majority, the FC can reduce the probability of detection error to 30.5% and 29% for the 2SA and the A-GLRT respectively. Copyright © 2023, The Authors. All rights reserved.

关键词： Robots

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Analysis of the EMF Parameters of the Stator Winding in the Run-Down Mode for Diagnosing Faults in an Induction Motor

Analysis of the EMF Parameters of the Stator Winding in the ...

引用

2023 IEEE International Conference on Smart Information Systems and Technologies, SIST 2023

作者： Yussupova, Assel Potapenko, Alexandra Neftissov, Alexandr Urazalimova, Dariya Serbin, Oleh Toraighyrov University Department of Electrical Engineering and Automation Pavlodar Kazakhstan Toraighyrov University Faculty of Computer Science Pavlodar Kazakhstan Astana It University Research and Innovation Center 'Industry 4.0' Astana Kazakhstan Chief Executive Officer Ceo & Executive Director Yaroslav Mudryi Ukraine

ISBN: (纸本)9798350335040

In industry, as well as in power plants and substations of developed countries, induction motor (IM) are the most common electrical machine. They consume a large amount of the generated electricity. At the same time, they account for a sufficient number of failures of all electrical equipment. In this case, the proportion of failures due to a break in a squirrel-cage rotor, according to various authors, can reach about 5-10%. However, experimental studies at a number of plants and power plants in the Pavlodar region have shown that the damage factor of the squirrel-cage IM rotor is much higher. As a rule, the breakage of the squirrel-cage rotor rods does not lead to an immediate failure of the IM, but is accompanied by a deterioration in its electromechanical characteristics. Basically, the harm from the operation of such IM is expressed in increased energy consumption. Moreover, a year of its operation leads to an excessive consumption of electricity, comparable to the cost of the IM itself. The article shows that today there are a large number of proposals for a method for diagnosing damage to the short-circuited rotor winding of an induction motor (IM) during operation. However, their sensitivity is limited by the need for detuning from fluctuations in the parameters of the electrical network, vibrations of the IM and the uneven moment of resistance of its load. Most of these effects can be eliminated if IM diagnostics are carried out based on the analysis of the EMF parameters in the stator winding in the rundown mode. The authors have analyzed the parameters of the EMF of the stator winding at all stages of the rundown mode and substantiated the use of the presented method for diagnosing faults in an induction motor. © 2023 IEEE.

关键词： Stators

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The mathematical model for the design of the RESHeat system 8

The mathematical model for the design of the RESHeat system

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8th International Conference on Smart and Sustainable Technologies, SpliTech 2023

作者： Cisek, Piotr Ocloń, Pawel Nowak-Ocloń, Marzena Kaczmarski, Karol Rerak, Monika Vallatti, Andrea Zielonka, Jakub Pawlowski, Adam Cracow University of Technology The Faculty of Environmental and Energy Engineering ul. Warszawska 24 Kraków31-155 Poland Sapienza University of Rome Department of Ingegneria Astronautica Elettrica Ed Energetica Via Eudossiana 18 Rome00184 Italy Cracow University of Technology The Faculty of Electrical and Computer Engineering ul. Warszawska 24 Kraków31-155 Poland

ISBN: (纸本)9789532901283

This paper presents new computer software for the analysis and selection of components for Resheat systems. The system uses renewable energy sources (RES) to produce heat and electricity. The developed software aims at the optimal selection of the Resheat system elements and their parameters based on the specific constraints of the investor. The Resheat system software takes into account statistical weather data for different project locations with different climates. In addition, the programme can perform a user-defined economic analysis of the system. The calculated results of the system performance in a given year may vary from the actual values by ± 20% for annual values and ± 40% for monthly values due to changing weather conditions in a given year. The results obtained from part of the resheat system (e.g. estimated energy gains from PV) were compared with the results obtained from calculations using commercial software to verify the accuracy of the calculations. The comparison shows that the results obtained from the Resheat software are at an acceptable level. © 2023 University of Split, FESB.

关键词： Energy efficiency

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Continuous-Time Damping-Based Mirror Descent for a Class of Non-Convex Multi-Player Games with Coupling Constraints

Continuous-Time Damping-Based Mirror Descent for a Class of ...

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International Conference on control and Automation (ICCA)

作者： Guanpu Chen Kun Cao Karl Henrik Johansson Yiguang Hong Division of Decision and Control Systems School of Electrical Engineering and Computer Science KTH Royal Institute of Technology Digital Futures Stockholm Sweden Department of Control Science and Engineering Research Institute for Intelligent Autonomous Systems Tongji University Shanghai China

ISBN: (数字)9798350354409

ISBN: (纸本)9798350354416

We study the computation of the global generalized Nash equilibrium (GNE) for a class of non-convex multi-player games, where players' actions are subject to both local and coupling constraints. Due to the non-convex payoff functions, we employ canonical duality to reformulate the setting as a complementary problem. Under given conditions, we reveal the relation between the stationary point and the global GNE. According to the convex-concave properties within the complementary function, we propose a continuous-time mirror descent to compute GNE by generating functions in the Bregman divergence and the damping-based design. Then, we devise several Lyapunov functions to prove that the trajectory along the dynamics is bounded and convergent.

关键词： Couplings Damping Automation Games Nash equilibrium Trajectory Mirrors

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An Insight into The Surface Plasmon-Polariton Propagation in The Graphene Heterostructure

An Insight into The Surface Plasmon-Polariton Propagation in...

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electrical, Energy, and Artificial Intelligence (EICEEAI), International engineering Conference on

作者： Mohsen Heidari Babak Rostami-Dogolsara Ebrahim Heydari Ibrahim M. Mansour Babak Janjan Shahram Bahadori-Haghighi Department of Electrical and Computer Engineering Tarbiat Modares University Tehran Iran Department of Electrical Engineering Islamic Azad university of Lahijan Branch (lIAU) Lahijan Iran Electrical Department Faculty of Engineering Zarqa University Zarqa Jordan School of Electrical and Computer Engineering Shiraz University Shiraz Iran

In this work, we analyze the reflection and the transmission of surface plasmons (SPs) between a single-mode and a multimode dielectric-loaded graphene plasmon waveguides. An effective index method (EIM) in combination with mode matching theory (MMT) is used to calculate the power transmittance and reflectance. The EIM is employed to find effective refractive indices of modes of single-mode and multimode sections. We introduce an analytical model for SPs modes based on procedures. Then the MMT is utilized at the junction of two waveguides to find the transmittance and reflectance of the mode coming from the single-mode section to the multimode section.

关键词： Reflectivity Analytical models Surface waves Waveguide junctions Graphene Waveguide theory Heterojunctions

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Simulation of Conducted Emissions From Power Converters Using Leading Switching Technologies

Simulation of Conducted Emissions From Power Converters Usin...

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IEEE Global Electromagnetic Compatibility Conference (GEMCCON)

作者： Amr Madi Francinei Vieira Piotr Lezynski Sebastian Koj Robert Smolenski Electrical Engineering Mathematics & Computer Science (EEMCS) University of Twente Enschede Netherlands Institute of Electrical Engineering and Measurement Technology Leibniz University Hannover Hannover Germany Institute of Automatic Control Electronics and Electrical Engineering University of Zielona Gora Zielona Gora Poland Department of Engineering Sciences Jade University of Applied Sciences Wilhelmshaven Germany

This paper presents a comparative study between the commonly used switches (IGBT, MOSFET, SiC and GaN) for power inverters of electric vehicles. A 400 V, three-phase inverter system simulation test is implemented using LTspice and the conducted emissions are compared to variant CISPR standards and switching frequencies in order to show the possible interferences with the other car equipment.

关键词： MOSFET Silicon carbide Switching frequency Interference Predictive models SPICE Inverters

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KERNEL-BASED LEARNING WITH GUARANTEES FOR MULTI-AGENT APPLICATIONS

arXiv

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arXiv 2024年

作者： Kowalczyk, Krzysztof Wachel, Pawel Rojas, Cristian R. Department of Control Systems and Mechatronics CosmologyWroclaw University of Science and Technology Wroclaw Poland School of Electrical Engineering and Computer Science CosmologyKTH Royal Institute of Technology Stockholm Sweden

This paper addresses a kernel-based learning problem for a network of agents locally observing a latent multidimensional, nonlinear phenomenon in a noisy environment. We propose a learning algorithm that requires only mild a priori knowledge about the phenomenon under investigation and delivers a model with corresponding non-asymptotic high probability error bounds. Both non-asymptotic analysis of the method and numerical simulation results are presented and discussed in the paper. Copyright © 2024, The Authors. All rights reserved.

关键词： Asymptotic analysis

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Secure Routing Protocol Based on FANET

Secure Routing Protocol Based on FANET

引用

International Russian Smart Industry Conference (SmartIndustryCon)

作者： I. I. Naumov R. R. Ibadov D. G. Chebotarev Faculty of Automation Mechatronics and Control Don State Technical University Rostov-on-Don Russia Department of Electrical Engineering and Electronics Don State Technical University Rostov-on-Don Russia

ISBN: (数字)9798331511241

ISBN: (纸本)9798331511258

The flying ad-hoc network (FANET) technology-based secure routing protocol described in this study functions between a ground station and a UAV network. This protocol employs a hybrid authentication technique to guarantee communication dependability. The system is based on an asymmetric method that ensures secure connections between the UAV and the ground control station, as well as between the UAVs themselves. A symmetric scheme with digital signatures is used to encrypt the routing. Before joining the network, the UAV must register. During the registration process, the Key Distribution Center provides the necessary public and private keys for each node that wants to connect. Furthermore, crucial routing data is safeguarded using the TWINE algorithm. Wormhole attacks are avoided by using the packet binding method. Even in the event of an aggressor attack, simulations show that this routing system can sustain effective network functioning, ensuring a high packet delivery ratio and optimal network costs.

关键词： Industries Network topology Authentication Autonomous aerial vehicles Routing Routing protocols Ad hoc networks Safety Registers Grippers

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Powering Wireless Sensor Networks with Solar Generated RF 15

Powering Wireless Sensor Networks with Solar Generated RF

引用

15th IEEE Malaysia International Conference on Communications, MICC 2021

作者： Ahmed, Amar Esse Abdullah, Khaizuran Habaebi, Mohamed Hadi Ramli, Huda Adibah Jusoh, Mohamad Huzaimy Department of Electrical and Computer Engineering International Islamic University Malaysia Kuala Lumpur Malaysia Centre for Satellite Communication Faculty of Electrical Engineering Universiti Teknologi MARA Selangor Shah Alam Malaysia

ISBN: (纸本)9781665426763

Powering Wireless sensor networks (WSN) is one of the most researched topics in the wireless field. Due to the density of such networks, conventional power sourcing using wires is not feasible. Furthermore, a sensor node (SN) in a WSN consumes small amounts of energy. Therefore, the SN can be charged wirelessly using a radio frequency (RF) power transmitter. This paper presents a solar-powered simultaneous wireless information and power transfer (SWIPT) transmitter design with dynamic power allocation (DPA). Moreover, a receiver design with separate energy harvesting (EH) and information decoding (ID) circuitries is adopted. DPA carries the communication signal on low-power subcarriers around the carrier frequency, while the energy signal is carried on a high-power continuous wave (CW) centered at the carrier frequency. DPA reduces the interference to external networks by limiting the high power signal to a few subcarriers. Furthermore, the split receiver design increases the harvested power at the EH circuit reservoir. © 2021 IEEE

关键词： Radio frequency Wireless communication Wireless sensor networks Radio transmitters Wires Receivers Solar energy

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