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IEEE Annual Conference on Decision and control

作者： Hajar Atrianfar Mohammad Haeri Electrical Engineering Department Amirkabir University of Technology Tehran Iran Advanced Control System Lab Electrical Engineering Department Sharif University of Technology Tehran Iran

ISBN: (纸本)9781479978878

In this paper, we propose a class of second-order continuous-time consensus protocols in networks with bounded communication delay and switching interaction topologies. We present a sufficient condition under which the information states of all agents approach common values. The convergence analysis relies on properties ofnonnegative matrices and graph theory and requires that the union of communication graphs has a spanning tree over a bounded period of time. In addition, convergence in leader-following consensus is proved for switching topology and time-varying agents' awareness. Also the appropriate feedback gains are computed via given mathematical relations.

关键词： Multi-agent systems Time-varying delays Double-integrator continuous-time systems Synchronous consensus Switching topologies Leader-following

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Compressive sensing with tent chaotic sequence

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Sensors and Transducers 2014年第2期165卷 119-124页

作者： Liu, Li Yang, Peng Zhang, Jianguo Ja, Huayu Key Lab of Advanced Transducers and Intelligent Control System Ministry of Education Taiyuan University of Technology Taiyuan 030024 China College of Physics and Optoelectronics Taiyuan University of Technology Taiyuan 030024 China

Compressive sensing is a new sampling theory to capture signals at sub-Nyquist rate. To guarantee exact recovery from sparse measurements, specific sensing matrix, which satisfies the Restricted Isometry Property, should be well chosen. Random matrix has been proved to meet the property with high probability;however, the practical implementation is expensive in hardware design. Chaotic matrices which generated by Logistic sequence, Chua and Lorenz dynamical systems have been verified to be Toeplitz-structured and sufficient to satisfy the property. In this paper, we propose that another chaotic sequence - Tent map can also be used to construct the sensing matrix. By numerical performance, we show that, the proposed Tent chaotic sensing matrix has similar performance to random matrix or Logistic chaotic matrix for exact reconstructing compressible signals and images from fewer measurements. © 2014 IFSA Publishing, S. L.

关键词： Compressed sensing

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Direct-DMC for AQM computational complexity reduction in TCP/IP networks

Direct-DMC for AQM computational complexity reduction in TCP...

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International Conference on control, Automation and systems ( ICCAS)

作者： Sarah Ostadabbas Mohammad Haeri Advanced Control System Lab Department of Electrical Engineering Sharif University of Technology Tehran Iran Department of Electrical Engineering Sharif University of Technology Tehran Iran

Active queue management (AQM) mechanisms are designed to provide better support for end-to-end congestion control mechanisms of transmission control protocol (TCP) in TCP/IP networks. This paper introduces direct dynamic matrix control (D-DMC) as a new AQM method in dynamic TCP networks. Ability of the controller in handling system delay along with its simplicity and low computational loads makes D-DMC a privileged AQM method in high speed networks. The controller is designed based on a small signal linearized fluid-flow model of TCP/AQM networks. The computational complexity analysis as well as the MATlab simulation results shows the out-performance of the developed controller for both queue regulation and complexity reduction. Fast response, low queue fluctuations (and consequently low delay jitter), and low packet marking probability are other features of the developed method with respect to other well-known AQM methods such as RED and PI which are also simulated for comparison.

关键词： Computational complexity TCPIP IP networks Fluid dynamics Computer network management Protocols control systems Delay systems Computer networks High-speed networks

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Fast Heuristic Algorithms for the Multiple Strip Packing Problem 1

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20th International Conference on Mathematical Optimization Theory and Operations Research , MOTOR 2021

作者： Vasilyev, Igor Ushakov, Anton V. Barkova, Maria V. Zhang, Dong Ren, Jie Chen, Juan Matrosov Institute for System Dynamics and Control Theory of SB RAS 134 Lermontov Street Irkutsk664033 Russia Algorithm and Technology Development Department Global Technical Service Department Huawei Technologies Co. Ltd. Dongguan China Moscow Advanced Software Technology Lab Huawei Russian Research Institute Moscow Russia

ISBN: (数字)9783030864330

ISBN: (纸本)9783030864323

In this paper we address the so-called two-dimensional Multiple Strip Packing Problem (MSPP). There is a set of rectangles and a set of strips, where each strip has a pre-defined width. The problem is to find a feasible packing of all the rectangles into the strips so as the maximal height of the packing over all the strips is minimized. A packing is feasible if all the rectangles are placed into the strips and not overlapped. In case of only one strip, the problem is widely known as the Strip Packing Problem (SPP). Many effective constructive heuristics for SPP are based on the so-called skyline representation of a packing pattern. We generalized this approach for the case of multiple strips and developed a randomized local search, which embeds the proposed skyline heuristic to compute the objective value for a packing. We also introduced the two-dimensional level multiple strip packing problem and developed some level-based constructive heuristics. We report computational results on real-life problem instances arisen in an application of MSPP in scheduling computing jobs on multiple Spark computer clusters. © 2021, Springer Nature Switzerland AG.

关键词： Heuristic algorithms

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Integer Programming Approach to the Data Traffic Paths Recovering Problem 19th

Integer Programming Approach to the Data Traffic Paths Recov...

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19th International Conference on Mathematical Optimization Theory and Operations Research, MOTOR 2020

作者： Vasilyev, Igor Zhang, Dong Ren, Jie Matrosov Institute for System Dynamics and Control Theory of Siberian Branch of Russian Academy of Sciences Irkutsk Russia Algorithm and Technology Development Department Global Technical Service Department Huawei Technologies Co. Ltd. Dongguan China Moscow Advanced Software Technology Lab Huawei Russian Research Institute Moscow Russia

ISBN: (纸本)9783030499877

In this paper, we propose a novel approach to recovering path relationships in communication networks. The path relationship is one of the key input data which is necessary for network operation and maintenance. We have a continuous network transformation, upgrades, expansions, service allocations, thus the network physical topology and paths relationship are permanently changing with high frequency. Our approach is aimed at recovering the path relationships through flow information of each arc in the network. Getting the flow information is not a big technical problem and its control is included in the basic toolbox for network monitoring. We consider two scenarios which lead us to integer linear programs. The both of them minimize the flow deviation, where in the first one we look for a directed spanning tree (r-arborescence) and, in the second one—more general origin/destination paths (OD-paths). We propose mixed integer linear programming formulations for both problems. Their feature is that they contain the non-polynomial number of constraints which are considered implicitly by the cutting planes approach. The preliminary computation results showed that the large-scale instances of the first scenario can easily be solved. At the same time, the optimal solutions of second scenario problems can be found only on small- and medium-size instances, which inspires for the further research. © 2020, Springer Nature Switzerland AG.

关键词： Integer programming

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Vibration Characteristics Analysis Of A Double-Suction Centrifugal Pump Identified By Intelligent Algorithms 12

Vibration Characteristics Analysis Of A Double-Suction Centr...

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12th IEEE Global Reliability and Prognostics and Health Management, PHM-Nanjing 2021

作者： Gu, Zhenyue Zhang, Mian Li, Decai Kang, Tianbo Tang, Xiuyang Wang, Zhiyuan Pei, Zhenlong Wang, Yiqiao Tianjin Key Laboratory For Advanced Mechatronic System Design And Intelligent Control School Of Mechanical Engineering Tianjin University Of Technology Tianjin300384 China China Tianjin Todelon Scicnce &TECHOLOGY CO. Ltd Tianjin China State Key Lab Of Water Resources And Hydropower Engineering Science Wuhan University Wuhan China

ISBN: (纸本)9781665401302

Due to the merits of high flow rate and high lift, double-suction centrifugal pumps are widely used for agricultural irrigation along the Yellow River in northern China. The operational conditions of the pump are highly related to the silt concentration and flow rates. Therefore, it is crucial to identify the vibration characteristics corresponding to different silt concentrations and flow rates to provide a prior guideline for pump condition monitoring. To this end, this paper explores the identification capabilities of typical intelligent models, including convolutional neural network (CNN), deep neural network (DNN), and support vector machine (SVM), to intelligently establish the connection between vibration characteristics and different flow rates and silt concentrations. Experimental studies on a double-section pump covering a range of flow rates and different silt concentrations are conducted. The results show that CNN features higher identification accuracy than DNN and SVM. © 2021 IEEE.

关键词： Vibration analysis

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Electromagnetic-acoustic Beam Compressor by Double-physical-fields Null Medium

Electromagnetic-acoustic Beam Compressor by Double-physical-...

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Progress in Electromagnetic Research Symposium (PIERS)

作者： Ran Sun Fei Sun Yichao Liu Zeyu Zhang Chao Yang Key Lab of Advanced Transducers and Intelligent Control System Ministry of Education and Shanxi Province College of Electronic Information and Optical Engineering Taiyuan University of Technology Taiyuan China

ISBN: (数字)9798350375909

ISBN: (纸本)9798350375916

In this study, double-physical-fields null medium, i.e., a subwavelength air channels surrounded by a carefully arranged metal plates, is utilized to design an electromagnetic-acoustic beam compressor capable of simultaneously compressing electromagnetic waves and acoustic waves. Numerical simulation results verify its ability to simultaneously produce the expected compression ratios for both electromagnetic waves and acoustic waves. Moreover, the compression ratio precisely matches the geometric size ratio of the input and output planes of the compressor. This work may have potential applications in electromagnetic-acoustic coupling systems and electromagnetic-acoustic processing/detection.

关键词： Couplings Electric potential Electromagnetic scattering Metals Numerical simulation Acoustic beams Electromagnetics

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Design of water source well and pipe network monitoring system of mine based on configuration software

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Energy Education Science and Technology Part A: Energy Science and Research 2013年第2期31卷 1019-1024页

作者： Gao, Yan Jin, Baoquan Zhang, Hongjuan College of Electrical and Power Engineering Taiyuan University of Technology Taiyuan 030024 China Key Lab of Advanced Transducers and Intelligent Control System Ministry of Education Taiyuan University of Technology Taiyuan 030024 China

Aiming at the status that the water source well has large quantity, far distance, complex pipe network distribution, monitoring and leak detection and location is not timely, the water source well and pipe network monitoring system based on configuration software is designed. Working conditions of the water source well and the pipe network in mine can be monitored by using distributed substation acquisition and master station centralized monitoring. Field data collected from sub-station is transmitted to the master station through wireless data transceiver. The communication is realized between the master station and the remote monitoring center by using fiber Ethernet technology. The field data and alarm information can be real-time displayed and processed in the remote monitoring center by using KingView configuration software, which can realize manual and automatic control, local and remote monitoring. © Sila Science.

关键词： Monitoring

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The vibration mechanism caused by external disturbance and suppression method of the rolling mill system

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Energy Education Science and Technology Part A: Energy Science and Research 2013年第4期31卷 2623-2626页

作者： Gao, Yan Jin, Baoquan Zhang, Hongjuan Taiyuan University of Technology College of Electrical and Power Engineering Taiyuan 030024 China Taiyuan University of Technology Key Lab of Advanced Transducers and Intelligent Control System Ministry of Education Taiyuan 030024 China

The rolling mill screw down system has complex control, large loading force, more disturbance factors, and complex disturbance relationships. The action of responding extreme frequency or external disturbances can cause the mill vibrating seriously, affect the quality of products or even cause great destruction. Based on the study of the external disturbance induced vibration mechanism of rolling mill, PID control based on low pass filter is used to suppress the vibration, and achieved content results in the united simulation of AMESim-MATlab/Simulink. © Sila Science. All Rights Reserved.

关键词： Low pass filters

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Wireless remote monitoring system for the AGC svibration fault of rolling mill

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Journal of Applied Sciences 2013年第21期13卷 4875-4880页

作者： Gao, Yan Jin, Baoquan Zhang, Hongjuan College of Electrical and Power Engineering Taiyuan University of Technology 030024 Taiyuan China Key Lab of Advanced Transducers and Intelligent Control System Ministry of Education Taiyuan University of Technology 030024 Taiyuan China

The rolling mill screw down AGC system sets several subsystems of machinery, electronics, hydraulics, controls in one. Under the action of responding extreme frequency or external disturbances, the non design objective coupling between the subsystems may be excited, and causing the most serious vibration, seriously impact product quality or even cause great destruction. Aiming at the defects in fault diagnosis and control system of the traditional rolling mill, the wireless remote monitoring system for the rolling mill AGC system vibration fault is designed in this paper. Using the advanced sensor technology, PLC and configuration software, GPRS network technology, the parallel distributed data acquisition and data processing for the key servo element and the hydraulic parameters which can characterize the fault characteristics of the system can be done. The monitoring software system platform on line of the hydraulic AGC system based on Kingview is set up for centralized real-time monitoring. According to the collected multidisciplinary parameter the fault identification and location is done by using the fault diagnosis expert system based on Web, thus to make the preliminary evaluation for the operation and fault of hydraulic AGC system and provide advanced prediction and exclude strategy. © 2013 Asian Network for Scientific Information.

关键词： Failure analysis

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