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2016 IEEE/CSAA International Conference on Aircraft Utility Systems, AUS 2016

作者： Huijun, Jiang Cheng, Qin Yaoxing, Shang Xiaochao, Liu Department of Flight Control and Hydraulic System AVIC the First Aircraft Institute Xi'an710089 China School of Automation Science and Electrical Engineering Beihang University Beijing100191 China

ISBN: (纸本)9781509010875

This paper presents the system works, solution of the limited hydraulic source with the velocity inner loop, and the system optimal design method of reduction ratio. Through modeling and simplifying the system, the static and dynamic characteristics are analyzed, and the selecting requirements of affecting its parameters are proposed. A method is raised to reduce the peak pressure of the hydraulic drive unit (PDU) inlet and outlet pipes and its internal motor. © 2016 IEEE.

关键词： Design

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Modbus communication behavior modeling and SVM intrusion detection method 16

Modbus communication behavior modeling and SVM intrusion det...

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6th International Conference on Communication and Network Security, ICCNS 2016

作者： Shang, Wenli Cui, Junrong Wan, Ming An, Panfeng Zeng, Peng Shenyang Institute of Automation Chinese Academy of Science China Key Laboratory of Networked Control Systems Chinese Academy of Sciences Shenyang110016 China Faculty of Automation and Electrical Engineering Shenyang Ligong University Shenyang110159 China

ISBN: (纸本)9781450347839

The security and typical attack behavior of Modbus/TCP industrial network communication protocol are analyzed. The data feature of traffic flow is extracted through the operation mode of the depth analysis abnormal behavior, and the intrusion detection method based on the support vector machine (SVM) is designed. The method analyzes the data characteristics of abnormal communication behavior, and constructs the feature input structure and detection system based on SVM algorithm by using the direct behavior feature selection and abnormal behavior pattern feature construction. The experimental results show that the method can effectively improve the detection rate of abnormal behavior, and enhance the safety protection function of industrial network. © 2016 ACM.

关键词： Support vector machines

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On Observability and Detectability of Continuous-Time Stochastic Markov Jump Systems

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Journal of Systems Science & Complexity 2015年第4期28卷 830-847页

作者： TAN Cheng ZHANG Weihai School of Control Science and Engineering Shandong University College of Electrical Engineering and Automation Shandong University of Science and Technology

This paper mainly studies observability and detectability for continuous-time stochastic Markov jump *** concepts called W-observability and W-detectability for such systems are introduced,which are shown to coincide with various notions of observability and detectability reported recently in literature,such as exact observability,exact detectability and ***,by introducing an accumulated energy function,some efficient criteria and interesting properties for both W-observability and W-detectability are obtained.

关键词： Continuous-time stochastic system detectability Markov jump observability.

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Compressive phase retrieval via reweighted amplitude flow

arXiv

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arXiv 2017年

作者： Zhang, Liang Wang, Gang Giannakis, Georgios B. Chen, Jie Digital Technology Center Department of Electrical and Computer Engineering University of Minnesota MinneapolisMN55455 United States State Key Laboratory of Intelligent Control and Decision of Complex Systems Beijing100081 China School of Automation State Key Laboratory of Intelligent Control and Decision of Complex Systems Beijing Institute of Technology Beijing100081 China

The problem of reconstructing a sparse signal vector from magnitude-only measurements (a.k.a., compressive phase retrieval), emerges naturally in diverse applications, but it is NP-hard in general. Building on recent advances in nonconvex optimization, this paper puts forth a new algorithm that is termed compressive reweighted amplitude flow and abbreviated as CRAF, for compressive phase retrieval. Specifically, CRAF operates in two stages. The first stage seeks a sparse initial guess via a new spectral procedure. In the second stage, CRAF implements a few hard thresholding based iterations using reweighted gradients. When there are sufficient measurements, CRAF provably recovers the underlying signal vector exactly with high probability under suitable conditions. Moreover, its sample complexity coincides with that of the state-of-the-art procedures. Finally, substantial simulated tests showcase remarkable performance of the new spectral initialization, as well as improved exact recovery relative to competing alternatives. Copyright © 2017, The Authors. All rights reserved.

关键词： Iterative methods

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Wireless tool holder sensor design for cutting force measurement applied to chatter detection

Wireless tool holder sensor design for cutting force measure...

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2016 IEEE Region 10 Conference, TENCON 2016

作者： Reyes-Uquillas, Daniel Alberto Hsiao, T. EECS International Graduate Program National Chiao Tung University Hsinchu Taiwan Department of Electrical and Control Engineering National Chiao Tung University Hsinchu Taiwan

ISBN: (纸本)9781509025961

Cutting forces in machining operations are of great importance because their characteristics are useful for predicting and detecting tool conditions and other occurrences. For example, one important and common problem shown in metal cutting is chatter, and cutting forces have a strong correlation with this phenomenon. Many researchers have worked in chatter detection and estimation using cutting forces. This work proposes the use of cutting force measurements and analysis of the frequency spectrum to detect chatter. The cutting force should be measured using a simple, compact, and low cost technique. Hence, in this work the measurement technique proposed in [1] of using strain gauges to measure the cutting forces is applied. Additionally, the previous design was enhanced and upgraded into a wireless system for monitoring. This new smart tool holder uses wireless technology to transmit the measurement data, and therefore removes various constraints the previous design had because of the use of wires. With the new design and added interface operations such as frequency response of the measured signal, a more functional online monitoring system was established. A peak in high frequencies was observed in the cutting test experiments when chatter appears. © 2016 IEEE.

关键词： Metal cutting

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Design of an additive manufactured XY compliant manipulator with spatial redundant constraints 35

Design of an additive manufactured XY compliant manipulator ...

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第35届中国控制会议

作者： ZHANG Zhen LIU Binbin WANG Peng YAN Peng State Key Laboratory of Tribology & Institute of Manufacturing Engineering Department of Mechanical EngineeringTsinghua University Beijing Key Lab of Precision/Ultra-precision Manufacturing Equipments and Control Tsinghua University State Key Laboratory of Fluid Power and Mechatronic Systems Zhejiang University School of Automation Science and Electrical Engineering Beihang University School of Mechanical Engineering Shandong University

ISBN: (纸本)9781509009107

This paper presents an additive manufactured beam flexure-based XY positioning stage with spatial redundant *** order to restrict rotational error motions of the guidance module,a spatial redundant constraint is *** additive manufacturing technique is adopted to monolithically fabricate the proposed positioning *** simulation results show that the proposed XY positioning stage is capable to achieve ±2 x 2 mm2 working *** fabricated prototyping stage shows that the advanced manufactured flexure mechanism can achieve good geometric effect and could be a good alternative to a metal-based flexure mechanism.

关键词： Nanopositioning Beam flexure mechanism Additive manufacturing

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Multiobjective approach for power flow and unbalance control in low-voltage networks considering distributed energy resources

Multiobjective approach for power flow and unbalance control...

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Brazilian Power Electronics Conference, COBEP

作者： W. M. Ferreira D. I. Brandao F. G. Guimarães E. Tedeschi F. P. Marafão Graduate Program in Electrical Engineering Federal University of Minas Gerais Belo Horizonte MG Brazil Federal Institute of Education Science and Technology of Minas Gerais Ipatinga MG Brazil Department of Electric Power Engineering Norwegian University of Science and Technology Trondheim Norway Group of Automation and Integrated Systems Universidade Estadual Paulista Sorocaba SP Brazil

This paper proposes a multiobjective optimization technique that maximizes the active power generation from single-phase distributed generators, and minimizes the unbalance factor at the point of common coupling of the network. Such technique is incorporated into a centralized control strategy for optimal power flow control purpose. The centralized control strategy used herein is the Power-Based control that coordinates the distributed units to contribute to the network's active and reactive power needs, per phase, in proportion of their power capacity. The simulation results of a simplified network with three single-phase distributed generators validate the proposal in terms of power flow control, voltage regulation and power quality.

关键词： Reactive power Optimization Power generation Genetic algorithms Load flow Voltage control Decision making

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Virtual Reality control of a Robotic Camera Holder for Minimally Invasive Surgery

Virtual Reality Control of a Robotic Camera Holder for Minim...

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Asian control Conference

作者： Kateryna Zinchenko Oleksii Komarov Kai-Tai Song EECS International Graduate Program National Chiao Tung University Hsinchu Taiwan Institute of Molecular Medicine and Bioengineering National Chiao Tung University Hsinchu Taiwan Institute of Electrical and Control Engineering National Chiao Tung University Hsinchu Taiwan

ISBN: (纸本)9781509015740;9781509015733

This paper presents a virtual reality(VR) control system for a robotic endoscope holder for minimally invasive surgery (MIS). The system features a three degree of freedom(DOF) robotic endoscope holder, virtual reality head mounted display and a control system that allows robot to follow headset movement. The headset display is aligned with endoscope camera view thus creating a full presence effect for a surgeon. The video from endoscope is streamed to the virtual reality head mounted display after image processing in a computer. During surgery, the proposed control system generates commands to the robot based on the headset's positioning data. After the desired camera motion direction is estimated, the robotic endoscope holder receives motion commands through serial interface. The proposed virtual reality robot control system is implemented in Unity. The system has been tested in the laboratory environment through a set of motion tests and achieved a response latency of 2s. The proposed system is able to restore the surgeon's perceptual capability of the operation space that is highly restricted in MIS and provide highly intuitive endoscope robot control.

关键词： Virtual reality Minimally invasive surgery Real-time image processing Robot control

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Nonintrusive Appliance Load Monitoring for Smart Homes: Recent Advances and Future Issues

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IEEE INSTRUMENTATION & MEASUREMENT MAGAZINE 2016年第3期19卷 56-62页

作者： Yu, Liu Li, Haibin Feng, Xiaowei Duan, Jizhong Technical University of Cluj Napoca Cluj-Napoca Romania Department of Electrical energy Systems and Automation Research group on Dynamical Systems and Control Ghent Belgium Department of ECE St. Joseph's College of Engineering Chennai India Department of ECE Anna University Chennai India “Gheorghe Asachi” Technical University of Iasi Romania School of Electronics Engineering VIT University Chennai India

In recent years, as Cloud Computing and Internet of Things (IoT) technologies develop rapidly, smart home technology has entered a new stage: smart electric power usage, which will break the traditional extensive management situation for electric power loads, particularly under the background of an energy crisis. People will gradually gravitate towards the demands for more energy-related and intelligent services in smart home systems such as energy saving, improved understanding of electrical consumption and electrical safety of appliances. When the power consumption is considered by a smart grid, detailed electrical information of power loads will be perceived for demand management and optimization. To address these issues, measuring and monitoring the power of residential individual appliances are highly demanded by many applications.

关键词： Home appliances Feature extraction Internet of things Harmonic analysis Current measurement Cloud computing Euclidean distance

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Parafoil Air-dropped control with Fixed Set-point Based on Interval Type ⅡFuzzy Logic

Parafoil Air-dropped Control with Fixed Set-point Based on I...

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第28届中国控制与决策会议

作者： Yongxin Li Kuansheng Zou Yunxi Zhang College of Computer and Control Engineering Nankai University School of Electrical Engineering and Automation Jiangsu Normal University School of Automation and Electrical Engineering Tianjin University of Technology and Education

ISBN: (纸本)9781467397155

Nowadays,the rescue material was air-dropped to a set point exactly with parafoil was a key technology in a disaster or an emergency *** this background,a control method was proposed based on the interval type Ⅱfuzzy logic,which was according to the parafoil dynamical model with six degrees-of-freedom and combined with the cross track error,also,a new parameter was defined which was used to measure the control *** proposed method in this research was used to control the parafoil that air dropped to a fixed set-point.A certain point in the parallel plane was set as the air-dropped target of the *** inputs ofthe fuzzy controller were the cross track error and the variation of the *** outputs were the synchronous control of the left and right motors of the *** experiment results verified that the parafoil can be exactly controlled to reach the fixed set point from the different original position with different projection angles.

关键词： Interval Type Ⅱ Fuzzy Logic control with Fixed Set-point Parafoil

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