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Chinese Intelligent Systems Conference, CISC 2017

作者： Xu, Zimin Zhang, Jianlei Li, Qiaoyu Chen, Zengqiang Department of Automation College of Computer and Control Engineering Nankai University Tianjin300071 China

ISBN: (纸本)9789811064951

Much attention has been paid on exploring the solutions for cooperative dilemma in multi-agent systems. Thereinto, the evolutionary game theory which describes cooperative dilemma is seen as an effective approach. Notably, many of previous works are based on the ideal hypothesis that individuals can feasibly obtain their neighbours’ payoffs to update strategies. Considering the difficulty of getting the exact information about payoffs, we propose the switching probabilities between strategies which do not require the payoffs. Here the evolutionary dynamics driven by the switching probabilities in a three-strategy game model is established. Results show that the steady state of the gaming system is closely related with the switching probability matrix. These findings give a novel account about the decision making process in the gaming systems, when a strategy updating rule weakening the ideal assumption about payoffs is established. © 2018, Springer Nature Singapore Pte Ltd.

关键词： Multi agent systems

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The conceptual approach of system for automatic vehicle accident detection and searching for life signs of casualties 5th

The conceptual approach of system for automatic vehicle acci...

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5th International Doctoral Symposium on Applied Computation and Security Systems, ACSS 2018

作者： Lupinska-Dubicka, Anna Tabedzki, Marek Adamski, Marcin Rybnik, Mariusz Omieljanowicz, Miroslaw Omieljanowicz, Andrzej Szymkowski, Maciej Gruszewski, Marek Klimowicz, Adam Rubin, Grzegorz Saeed, Khalid Faculty of Computer Science Bialystok University of Technology Bialystok Poland Faculty of Mathematics and Informatics University of Bialystok Bialystok Poland Faculty of Mechanical Engineering Department of Automatic Control and Robotics Bialystok University of Technology Bialystok Poland Faculty of Computer and Food Science Lomza State University of Applied Sciences Lomza Poland

ISBN: (纸本)9789811337017

The European eSafety initiative aims to improve the safety and efficiency of road transport. The main element of eSafety is the pan-European eCall project—an in-vehicle system which idea is to inform about road collisions or serious accidents. As estimated by the European Commission, the implemented system will reduce services’ response time by 40%. This will save 2,500 people a year. In 2015, the European Parliament adopted the legislation that from the end of March 2018 all new cars from the EU should be equipped with the eCall system. The limitation of this idea is that only small part of cars driven in UE are brand new (about 3.7% brand new cars were sold in 2015). This paper presents the first concept of an onboard eCall device which can be installed at the owners’ request in used vehicles. The proposed system will be able to detect a road accident, indicate the number of vehicle’s occupants, report their vital functions, and send that information to dedicated emergency services via duplex communication channel. © Springer Nature Singapore Pte Ltd. 2019.

关键词： Emergency services

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Influences of the workpiece pose errors on gear skiving accuracy

Research Square

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Research Square 2021年

作者： Lin, Xiaochuan Hong, Rongjing Wang, Yawen Peng, Yun Ren, Xiaolei School of Mechanical and Power Engineering Nanjing Tech University Nanjing211816 China Jiangsu Key Laboratory of Digital Manufacturing for Industrial Equipment and Control Technology Nanjing Tech University Nanjing211816 China No.30 Puzhu Sothern Road Pukou District Jiangsu Nanjing China Department of Mechanical and Aerospace Engineering University of Texas at Arlington 701 S Nedderman Dr ArlingtonTX76019 United States College of Mechanical and Electrical Engineering Nanjing University of Aeronautics and Astronautics No.29 Yudao Road Qinhuai District Nanjing210016 China Department of Computer Science and Engineering University of Texas at Arlington 701 S Nedderman Dr ArlingtonTX76019 United States

This paper investigates the influence of the workpiece pose errors on gear skiving accuracy. First, based on the theory of homogeneous coordinate transformation, the mapping relationship between the tooth flank of the workpiece and the skiving tool is established according to the principle of gear skiving. Second, the workpiece pose errors are defined, and the relationship between each workpiece pose error and cutting depth is analyzed. According to the kinematic chain of the machine tool, a method for measuring the workpiece pose errors based on actual inverse kinematics is proposed. Third, the tooth deviations from individual workpiece pose errors, and the coupling workpiece pose errors are studied. The sensitive errors are obtained from the tooth deviation by numerical simulation. Finally, the numerical analysis is verified by gear skiving experiments, and the proposed method can be used to identify the possible workpiece pose errors. Furthermore, the PSO algorithm is introduced to guide the workpiece setting pose errors in the gear skiving process. © 2021, CC BY.

关键词： Inverse kinematics

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When Smoothness is Not Enough: Toward Exact Quantification and Optimization of the Price-of-Anarchy

When Smoothness is Not Enough: Toward Exact Quantification a...

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IEEE Annual Conference on Decision and control

作者： Rahul Chandan Dario Paccagnan Jason R. Marden Department of Electrical and Computer Engineering Center of Control Dynamical Systems and Computation UC Santa Barbara USA Department of Mechanical Engineering Center of Control Dynamical Systems and Computation UC Santa Barbara USA

ISBN: (数字)9781728113982

ISBN: (纸本)9781728113999

Today's multiagent systems have grown too complex to rely on centralized controllers, prompting increasing interest in the design of distributed algorithms. In this respect, game theory has emerged as a valuable tool to complement more traditional techniques. The fundamental idea behind this approach is the assignment of agents' local cost functions, such that their selfish minimization attains, or is provably close to, the global objective. Any algorithm capable of computing an equilibrium of the corresponding game inherits an approximation ratio that is, in the worst case, equal to its price-of-anarchy. Therefore, a successful application of the game design approach hinges on the possibility to quantify and optimize the equilibrium *** this end, we introduce the notion of generalized smoothness, and show that the resulting efficiency bounds are significantly tighter compared to those obtained using the traditional smoothness approach. Leveraging this newly-introduced notion, we quantify the equilibrium performance for the class of local resource allocation games. Finally, we show how the agents' local decision rules can be designed in order to optimize the efficiency of the corresponding equilibria, by means of a tractable linear program.

关键词： Games Resource management Cost function Multi-agent systems Approximation algorithms control systems Nash equilibrium

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Customized quantum annealing schedules

arXiv

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arXiv 2021年

作者： Khezri, Mostafa Dai, Xi Yang, Rui Albash, Tameem Lupascu, Adrian Lidar, Daniel A. Department of Electrical Engineering University of Southern California Los AngelesCA90089 United States Center for Quantum Information Science & Technology University of Southern California Los AngelesCA90089 United States Department of Physics and Astronomy University of Waterloo WaterlooON Canada Institute for Quantum Computing University of Waterloo WaterlooON Canada Department of Electrical and Computer Engineering University of New Mexico AlbuquerqueNM87131 United States Center for Quantum Information and Control CQuIC University of New Mexico AlbuquerqueNM87131 United States Department of Chemistry University of Southern California Los AngelesCA90089 United States Department of Physics University of Southern California Los AngelesCA90089 United States

In a typical quantum annealing protocol, the system starts with a transverse field Hamiltonian which is gradually turned off and replaced by a longitudinal Ising Hamiltonian. The ground state of the Ising Hamiltonian encodes the solution to the computational problem of interest, and the state overlap with this ground state gives the success probability of the annealing protocol. The form of the annealing schedule can have a significant impact on the ground state overlap at the end of the anneal, so precise control over these annealing schedules can be a powerful tool for increasing success probabilities of annealing protocols. Here we show how superconducting circuits, in particular capacitively shunted flux qubits (CSFQs), can be used to construct quantum annealing systems by providing tools for mapping circuit flux biases to Pauli coefficients. We use this mapping to find customized annealing schedules: appropriate circuit control biases that yield a desired annealing schedule, while accounting for the physical limitations of the circuitry. We then provide examples and proposals that utilize this capability to improve quantum annealing performance. Copyright © 2021, The Authors. All rights reserved.

关键词： Annealing

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Gradient catastrophe of nonlinear photonic valley-Hall edge pulses

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Physical Review Research 2021年第4期3卷 043027-043027页

作者： Daria A. Smirnova Lev A. Smirnov Ekaterina O. Smolina Dimitris G. Angelakis Daniel Leykam Nonlinear Physics Centre Australian National University Canberra ACT 2601 Australia Institute of Applied Physics Russian Academy of Science Nizhny Novgorod 603950 Russia Department of Control Theory Nizhny Novgorod State University Gagarin Av. 23 Nizhny Novgorod 603950 Russia Centre for Quantum Technologies National University of Singapore 3 Science Drive 2 Singapore 117543 School of Electrical and Computer Engineering Technical University of Crete Chania Greece 73100

We derive nonlinear wave equations describing the propagation of slowly varying wave packets formed by topological valley-Hall edge states. We show that edge pulses break up even in the absence of spatial dispersion due to nonlinear self-steepening. Self-steepening leads to the previously unattended effect of a gradient catastrophe, which develops in a finite time determined by the ratio between the pulse's nonlinear frequency shift and the size of the topological band gap. Taking the weak spatial dispersion into account results in the formation of stable edge quasisolitons. Our findings are generic to systems governed by Dirac-like Hamiltonians and validated by numerical modeling of pulse propagation along a valley-Hall domain wall in staggered honeycomb waveguide lattices with Kerr nonlinearity.

关键词： Nonlinear optics Photorefractive & Kerr effects Topological effects in photonic systems Waveguide arrays

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Compound control method for DC–DC converter

Compound control method for DC–DC converter

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2019 Jiangsu Annual Conference on Automation, JACA 2019

作者： Tang, Yongwei Li, Juan Li, Shengquan Lin, Zhongwei Wang, Shuwang Department of Electrical Engineering School of Electrical Energy and Power Engineering Yangzhou University Yangzhou225127 China State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources School of Control and Computer Engineering North China Electric Power University Beijing102206 China

Considering the problems of internal and external disturbances, i.e. time-varying load, inaccurate system model and external uncertainties etc., a compound control strategy based on model predictive control (MPC) and non-linear extended state observer (ESO) are proposed to attenuate the output voltage fluctuation under continuous conduction mode (CCM) mode of the buck circuits. In addition, a non-linear ESO is used to observe all kinds of uncertainties caused by internal and external disturbances and to eliminate their effects by compensating these disturbances in the feed-forward channel. Compared with the pure MPC control, the simulation results show that the proposed composite control method has the better disturbance suppression effect and also can effectively improve the stability of the buck circuit. © 2019 Institution of engineering and Technology. All rights reserved.

关键词： Model predictive control

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Addressing the tacit knowledge of a digital library system

Addressing the tacit knowledge of a digital library system

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2018 Multidisciplinary Symposium on computer Science and ICT, REMS 2018

作者： Iorio, Angela Di Schaerf, Marco Department of Computer Control and Management Engineering Antonio Ruberti Sapienza University of Rome Italy

Recent surveys, about the Linked Data initiatives in library organizations, report the experimental nature of related projects and the diculty in re-using data to provide improvements of library services. This paper presents an approach for managing data and its tacit organizational knowledge, as the originating data context, improving the interpretation of data meaning. By analyzing a Digital Libray system, we prototyped a method for turning data management into a semantic data management, where local system knowledge is managed as a data, and natively foreseen as a Linked Data. Semantic data management aims to curates the correct consumers' understanding of Linked Datasets, driving to a proper re-use. Copyright © by the paper's authors.

关键词： Linked data

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A New Active Disturbance Rejection controller Design Based on Fractional Extended State Observer

A New Active Disturbance Rejection Controller Design Based o...

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第三十八届中国控制会议

作者： Pengchong Chen Ying Luo Weijia Zheng Zhiqiang Gao Department of Mechanical Science and Engineering Huazhong University of Science and Technology Center for Advanced Control Technologies Department of Electrical and Computer Engineering Cleveland State University

An improved active disturbance rejection controller based on the fractional order extended state observer（FOESO）is proposed in this *** the proposed FOESO,a second order plant model is converted into a cascaded fractional order integrator(1/s,0<α<1).Thus,a stable closed-loop feedback control system with enough phase margin for stability can be realized using a simple proportional ***,the open-loop phase-frequency characteristic of the system is flat around the gain crossover frequency,namely,the system is robust to loop gain ***,without the differential action in the designed controller,the control system achieves the robustness to high-frequency noise.

关键词： Fractional order extended state observer fractional order active disturbance rejection robust noise

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Electromagnetic analysis of a wind turbine magnetic gearbox

Electromagnetic analysis of a wind turbine magnetic gearbox

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作者： Li, Kang Modaresahmadi, Sina Williams, Wesley Bird, Jonathan Z. Department of Electrical and Computer Engineering University of North Carolina at Charlotte 9201 University City Boulevard CharlotteNC28223 United States Department of Engineering Technology University of North Carolina at Charlotte 9201 University City Boulevard CharlotteNC28223 United States Laboratory for Electromechanical Energy Conversion and Control Department of Electrical and Computer Engineering Portland State University 1900 SW 4th Avenue PortlandOR97201 United States

The design of the second stage of a 59:1 multi-stage magnetic gearbox for a wind turbine demonstrator is presented. The multi-stage series-connected magnetic gearbox is composed of a 6.45 first stage and 9.14 second stage. A flux-focusing spoke-type rotor typology is used with a unique segmented fully laminated design. The impact of structural design changes is considered with respect to torque density. A new rotor typology is presented that enables the magnetic gearbox to be mechanically assembled first without magnets. © 2019 Institution of engineering and Technology. All rights reserved.

关键词： Wind turbines

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