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World Congress on Intelligent control and automation (WCICA)

作者： Yunze Cai Hengyu Duan Hua O. Wang Weidong Zhang Department of Automation Key Laboratory of System Control and Information Processing Shanghai China Department of Mechanical Engineering Boston University Boston MA USA

ISBN: (纸本)9781467384155

In state estimation (filtering) applications, state vector of a target always includes some a priori constraints, and utilizing such constraints will help obtain a more precise estimation. While in some cases, a significant issue lies in that when such constraints are not perfect, how we exploit them and improve the performance of estimation. Information contains “imperfection” sometimes because our knowledge of the real world is not absolutely right. This essay proposes a deep research on multi-agent systems with imperfect constraints and highly artificial intelligence: firstly, by using the projection method, results of traditional Kalman Filtering are projected onto the constrain subspace; secondly, based on consensus, this essay has thoroughly introduced the local information exchange and fusion strategy; and thirdly, simulations on target tracking have proved the feasibility and precision of the algorithms mentioned within this essay.

关键词： Decision support systems Intelligent control automation Next generation networking DVD

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Combined adaptive control system for nonlinear object with delay and self-tuning dynamic correction unit

Combined adaptive control system for nonlinear object with d...

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Dynamics of systems, Mechanisms and Machines (Dynamics)

作者： Eugenie L. Eremin Evgeniy A. Shelenok Information and Control Systems Department Amur State University Blagoveshchensk Russia Automation and System Engineering Department Pacific National University Khabarovsk Russia

This article considers the problem of constructing an adaptive control system for nonlinear priori uncertain dynamic object with statement delay and relative order greater than one. As methods of solving the hyperstab... 详细信息

ISBN: (纸本)9781509040513

关键词： control systems Heuristic algorithms Adaptive control Nonlinear dynamical systems Transfer functions Integrated circuit modeling Delays

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Performance limits analysis of linear predictive control systems with input saturation 35

Performance limits analysis of linear predictive control sys...

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35th Chinese control Conference, CCC 2016

作者： Cai, Xin Ding, Yongsheng Hao, Kuangrong Li, Shaoyuan Engineering Research Center of Digitized Textile and Apparel Technology Ministry of Education College of Information Science and Technology Donghua University Shanghai201620 China Department of Automation Shanghai Jiao Tong University Key Laboratory of System Control and Information Processing Ministry of Education Shanghai200240 China

ISBN: (纸本)9789881563910

This paper proposes a novel method to analyze performance features of linear model predictive control (MPC) systems with input saturation. The performance of MPC is compared with that of saturated control to find out how well MPC can perform under input saturation case. By exploring the properties of Riccati difference equation (RDE) and geometric structure of linear MPC, upper and lower bounds of the ratio between performance of MPC and saturated control are obtained. The establishment of such relationship provides a feasible approach to quantify the performance enhancement by introducing receding horizon optimization method into input saturated systems. © 2016 TCCT.

关键词： Model Predictive control Finite Horizon Optimal control Riccati Difference Equation Saturated control

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Repeated Strike Process During Disconnector Operation in Ultra-High Voltage Gas-Insulated Switchgear

Repeated Strike Process During Disconnector Operation in Ult...

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作者： Guan, Yonggang Cai, Yuanji Chen, Weijiang Liu, Weidong Li, Zhibing Yue, Gongchang Zhang, Junmin State Key Lab of Control and Simulation of Power System and Generation Equipments Department of Electrical Engineering Tsinghua University Beijing100084 China State Grid Corporation of China Beijing100031 China China Electric Power Research Institute Beijing100192 China School of Automation Science and Electrical Engineering Beihang University Beijing100191 China

Very fast transient over-voltage (VFTO), induced by disconnector operations in gas-insulated switchgears, has become the limiting dielectric stress at ultra-high voltage levels. Much work has been done to investigate single-strike waveforms of VFTO. However, little study has been carried out investigating the repeated strike process, which would influence VFTO significantly. In this paper, we carried out 450 effective experiments in an ultra-high voltage test circuit, and conducted calculations through the Monte Carlo simulation method, to investigate the repeated strike process. Firstly, the mechanism of the repeated strike process is proposed, based on the experimental results. Afterwards, statistical breakdown characteristics of disconnectors are obtained and analyzed. Finally, simulations of the repeated strike process are conducted, which indicate that the dielectric strength recovery speed and polarity effect factor have a joint effect on VFTO. This study enhances the understanding of the nature of VFTO, and may help to optimize the disconnector designed to minimize VFTO.

关键词： Monte Carlo methods

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Improving a two-equation eddy-viscosity turbulence model to predict the aerodynamic performance of thick wind turbine airfoils

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Journal of Physics: Conference Series 2018年第1期974卷

作者： Galih Bangga Tri Kusumadewi Go Hutomo Ahmad Sabila Taurista Syawitri Herlambang Setiadi Muhamad Faisal Raditya Wiranegara Yongki Hendranata Dwi Lastomo Louis Putra Stefanus Kristiadi Institute of Aerodynamics and Gas Dynamics University of Stuttgart Stuttgart Germany Mechanical Engineering Department Institut Teknologi Sepuluh Nopember Surabaya Indonesia School of Manufacturing System and Mechanical Engineering Sirindhorn International Institute of Technology Thammasat University Thailand Toyota SO Department Astra International Ltd. Indonesia Civil Engineering Department Universitas Brawijaya Malang Indonesia Mechanical Engineering Department Universitas Muhammadiyah Surakarta Surakarta Indonesia School of Information Technology & Electrical Engineering The University of Queensland Brisbane Australia Non-Installation Top Range Department Berca Schindler Lifts Ltd. Indonesia Graduate Institute of Automation and Control National Taiwan University of Science and Technology Taiwan School of Aerospace Transport and Manufacturing Cranfield University United Kingdom Mechanical Engineering Department Texas A&M University College Station United States PUI-PT Mechatronics and Industrial Automation Research Center Intitut Teknologi Sepuluh Nopember Surabaya Indonesia Mechanical Engineering Department Politecnico di Milano Milan Italy Aeronautics Department Imperial College of Science Technology and Medicine London United Kingdom

Numerical simulations for relatively thick airfoils are carried out in the present studies. An attempt to improve the accuracy of the numerical predictions is done by adjusting the turbulent viscosity of the eddy-viscosity Menter Shear-Stress-Transport (SST) model. The modification involves the addition of a damping factor on the wall-bounded flows incorporating the ratio of the turbulent kinetic energy to its specific dissipation rate for separation detection. The results are compared with available experimental data and CFD simulations using the original Menter SST model. The present model improves the lift polar prediction even though the stall angle is still overestimated. The improvement is caused by the better prediction of separated flow under a strong adverse pressure gradient. The results show that the Reynolds stresses are damped near the wall causing variation of the logarithmic velocity profiles.

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Bandwidth Allocation with Minimum Rate Constraints in Cluster-based Femtocell Networks

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International Journal of automation and computing 2015年第1期12卷 77-82页

作者： Kai Ma Liang Li Jie Yang Zhi-Xin Liu Xin-Bin Li Xin-Ping Guan School of Electrical Engineering Key Laboratory of Industrial Computer Control Engineering of Hebei Province Yanshan University Department of Automation Shanghai Jiao Tong University Key Laboratory of System Control and Information ProcessingMinistry of Education

Inter-femtocell interference becomes serious when femtocells are densely deployed. To mitigate the inter-femtocell interference, this paper proposes a cluster-based bandwidth allocation algorithm. We create femtocell clusters by constructing a weighted interference graph and allocate bandwidth to each cluster based on a Nash bargaining solution(NBS). Simulation results show that the cluster-based bandwidth allocation algorithm can reduce the inter-femtocell interference and meet the minimum rate constraint of each cluster.

关键词： Femtocell cluster inter-femtocell interference bandwidth allocation Nash bargaining solution(NBS)

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Design and validation of hydraulic pump system driven by the electromotor under the high-power and long-time working state in an airborne

Design and validation of hydraulic pump system driven by the...

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IEEE International Conference on Aircraft Utility systems (AUS)

作者： Huijun Jiang Zhenshui Li Hong Liu Zongxia Jiao Yaoxing Shang Xiaochao Liu Department of Flight Control and Hydraulic System AVIC the First Aircraft Institute Xi'an China School of Automation Science and Electrical Engineering Beihang University Beijing China

ISBN: (纸本)9781509010882

This paper introduced a type of aircraft electric hydraulic pump system working principle, the key points of the system are analyzed and described, including calculation of boost pressure, system oil temperature control design, environmental temperature checking, starting logic design, the system validation and verification methods are expounded. This system passed through the ground test and flight time Validation, and worked well and reliably.

关键词： Oils Aircraft Aerospace control Hydraulic systems Heat transfer Resistance heating

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AUV assisted Asynchronous Localization for Underwater Sensor Networks

AUV assisted Asynchronous Localization for Underwater Sensor...

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第35届中国控制会议

作者： Jing Yan Xiaoning Zhang Xiaoyuan Luo Yanlong Sun Xinping Guan Institute of Electrical Engineering Yanshan University Department of Automation Shanghai Jiao Tong Universityand Key Laboratory of System Control and Information ProcessingMinistry of Education of China

ISBN: (纸本)9781509009107

Underwater sensor networks(USNs) have been identifies as a promising technology to monitor and explore the underwater *** applications of USNs demand reliable and accurate localization for sensor ***,mobility and clock asynchronous characteristics on underwater sensor nodes make it challenging to achieve *** this paper,we are concerned with AUV assisted asynchronous localization problem for USNs,where AUVs run as mobile nodes and reference points.A tracking variance threshold is set to determine the occasion of localization *** node need to be localized performs the localization protocol and communicates with the anchor ***,a method of time difference is used to eliminate the effects of asynchronous *** the localization,a motion compensation method based on estimation is proposed to compensate the movements of *** addition,the localizing errors due to velocity estimation are analyzed in error *** last,simulation results confirm the efficiency of the proposed algorithm.

关键词： Underwater sensor networks asynchronous localization mobility

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A Data Driven Approach for Resting-state EEG signal Classificition of Schizophrenia with control Participants Using Random Matrix Theory

arXiv

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arXiv 2017年

作者： Liu, Haichun Zhang, TianHong Ye, Yumeng Pan, Changchun Yang, Genke Wang, JiJun Qiu, Robert C. Key Laboratory of System Control and Information Processing Shanghai Jiaotong University Ministry of Education of China Shanghai200240 China Department of Automation Shanghai Jiaotong University Shanghai200240 China Shanghai Key Laboratory of Psychotic Disorders Shanghai Mental Health Center Shanghai Jiaotong University School of Medicine Shanghai200030 China Brain Science and Technology Research Center Shanghai Jiao Tong University Shanghai200240 China Department of Electrical Engineering Shanghai Jiaotong University Shanghai200240 China Department of Electrical and Computer Engineering Tennessee Technological University CookevilleTN38505 United States

Resting state electroencephalogram (EEG) abnormalities in clinically high-risk individuals (CHR), clinically stable first-episode patients with schizophrenia (FES), healthy controls (HC) suggest alterations in neural oscillatory activity. However, few studies directly compare these anomalies among each types. Therefore, this study investigated whether these electrophysiological characteristics differentiate clinical populations from one another, and from non-psychiatric controls. To address this question, resting EEG power and coherence were assessed in 40 clinically high-risk individuals (CHR), 40 first-episode patients with schizophrenia (FES), and 40 healthy controls (HC). These findings suggest that resting EEG can be a sensitive measure for differentiating between clinical *** paper proposes a novel data-driven supervised learning method to obtain identification of the patients mental status in schizophrenia research. According to Marchenko-Pastur Law, the distribution of the eigenvalues of EEG data is divided into signal subspace and noise subspace. A test statistic named LES that embodies the characteristics of all eigenvalues is adopted. different classifier and different feature(LES test function) are selected for experiments, we have shown that using von Neumann Entropy as LES test function combine with SVM classifier could obtain the best average classification accuracy during three classification among HC, FES and CHR of Schizophrenia group with EEG signal. It is worth noting that the result of LES feature extraction with the highest classification accuracy is around 90% in two classification(HC compare with FES) and around 70% in three classification. Where the classification accuracy higher than 70% could be used to assist clinical diagnosis. Copyright © 2017, The Authors. All rights reserved.

关键词： Eigenvalues and eigenfunctions

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Joint user grouping and beamformer design for wireless backhaul in downlink cloud-RANs

Joint user grouping and beamformer design for wireless backh...

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International Conference on Wireless Communications and Signal Processing (WCSP)

作者： Bin Hu Cunqing Hua Cailian Chen Xinping Guan Department of Automation Key Laboratory of System Control and Information Processing Shanghai China School of Information Security Engineering Shanghai Jiao Tong University Shanghai China

ISBN: (纸本)9781509028610

In this paper, we consider beamformer design of access and backhaul links in downlink cloud-RANs. An optimization problem is formulated with the objective of maximizing the weighted sum rate (WSR) under the constraints of power consumption, backhaul rate, as well as user grouping, which assumes each user is served by only one SBS to reduce the traffic load over the backhaul links. To solve this intractable problem, reweighted ℓ 1 -norm, successive convex approximation and WMMSE-based formulation methods are introduced to transform it into a tractable form. An iterative algorithm based on block coordinate update (BCU) scheme is designed to solve the approximate problem. Finally, simulation results verify the effectiveness of the proposed algorithm.

关键词： Wireless communication Linear programming Interference Array signal processing Downlink Approximation algorithms Algorithm design and analysis

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