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Adaptive variable selection using non-negative garrote with application to soft sensor and fault detection

Nanjing Li Gong Daxue Xuebao/Journal of Nanjing University of Science and Technology 2012年第SUPPL.2期36卷 82-86页

作者： Wang, Jian-Guo Guo, Yong Ma, Shi-Wei Pan, Chang-Chun Jang, Shi-Shang Wong, David Shan-Hill School of Mechatronical Engineering and Automation Shanghai Key Lab. of Power Station Automation Technology Shanghai University Shanghai 200072 China Department of Automation Key Laboratory of System Control and Information Processing Shanghai Jiao Tong University Shanghai 200240 China Department of Chemical Engineering National Tsing-Hua University Taiwan 30013 Taiwan

In order to improve the function of soft sensor to conduct variable selection, fault detection and model structure identification in the case of faulty state, a design method of new soft sensor is studied though the variable selection algorithm. A non-stationary time serial is introduced to describe the process output not being reflected by sensor variables and to detect whether the process enters the faulty state. A non-negative garrote method is adopted to identify the model structure and a modeling method for new soft sensors is presented. The obtained model can be used for both prediction, and detection of structural model change and the emergence of disturbance. Compared with the ordinary soft sensor based on partial least square algorithm, the advantages of the proposed method are demonstrated by a simulation example and an industrial application to temperature prediction of a blast furnace hearth.

关键词： Fault detection

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Forward modeling of infinitesimal dipole dipping effects in marine CSEM survey

Forward modeling of infinitesimal dipole dipping effects in ...

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2011 International Conference on Electrical engineering and Informatics, ICEEI 2011

作者： Hussain, Nazabat Karsiti, M.N. Yahya, Norashikin Burhanuddin, Zainal A. Automation and Control System Group Department of Electrical and Electronic Engineering Universiti Teknologi PETRONAS Bandar Seri Iskandar 31750 Tronoh Perak Malaysia

ISBN: (纸本)9781457707520

This paper present numerical modeling of infinitesimal dipole for the purpose of finding irregularities in real time survey data of marine controlled source electromagnetic survey. Algorithm for numerical solution using staggered grid scheme of finite difference method has been developed by using auxiliary potential functions in Helmholtz equation. Solution is obtained through a) discretized the solution region into number of elements and define boundary condition b) implementing algorithm for resulting system of linear algebraic equations. The results provides detailed understanding of irregularities in survey data caused by improper orientation of source during electromagnetic sounding for exploration of petroleum reserves in deep sea. © 2011 IEEE.

关键词： Numerical models

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Mapping of hydrocarbon with marine em method using 2-D forward modeling

Mapping of hydrocarbon with marine em method using 2-D forwa...

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International Conference on Modeling, Simulation and Applied Optimization

ISBN: (纸本)9781457700057

This paper present two-dimensional forward modeling of marine controlled-source electromagnetic data for the purpose of hydrocarbon mapping. The forward algorithm employs a staggered-grid finite difference solution to the total-electric field Helmholtz equation. Solution are achieved through a) an optimal grid technique that extends the boundaries of the mesh outward from the region of interest using a minimal number of nodes, and b) a direct matrix solution technique that allows for the simultaneous solution for all sources. The forward modeling provides qualitative understanding of electromagnetic signals behavior as it propagates through hydrocarbon and conductive saline fluids bearing layers at depth. © 2011 IEEE.

关键词： Hydrocarbons

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Effectiveness research of deep brain stimulation operation for patients with Parkinson's disease based on polar coordination system with varied origin

Effectiveness research of deep brain stimulation operation f...

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2011 4th International Conference on Biomedical engineering and Informatics, BMEI 2011

作者： Wang, Min Wang, Bei Zou, Junzhong Zhang, Jian Nakamura, Masatoshi Department of Automation School of Information Science and Engineering East China University of Science and Technology Shanghai 200237 China Department of Advanced System Control Engineering Saga University Saga 840-8502 Japan

ISBN: (纸本)9781424493524

Parkinson's disease (PD) is a common disease of central nervous system among the elderly, and its complex symptoms bring up some difficulties for the clinical diagnosis. And Deep Brain Stimulation (DBS) is an effective treatment method for patients with Parkinson's disease. In this study, a method based on polar coordination system with varied origin was proposed to quantitatively evaluate the availability of DBS operation for patients with Parkinson's disease. Totally, seven patients with Parkinson's disease were participated in the spiral drawing experiment and their scores under Unified Parkinson's disease Rating Scale (UPDRS) were also recorded. According to the characteristics of hand movement in spiral drawing, a set of parameters were defined and calculated before and after DBS operation. Compared with the UPDRS scores, experimental results showed that this method of evaluation was consistent with the clinical diagnosis. The proposed method based on polar coordinate system with varied origin is effective in clinical diagnosis, and it provides a basis for quantitative evaluating the effectiveness of surgery and treatment. © 2011 IEEE.

关键词： Coordination reactions

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Quantitative evaluation of hand movement in spiral drawing for patients with Parkinson's disease based on modeling in polar coordinate system with varied origin

Quantitative evaluation of hand movement in spiral drawing f...

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IEEE/Institute of Complex Medical engineering International Conference on Complex Medical engineering

ISBN: (纸本)9781424493241

Parkinson's disease is one of the most common neurodegenerative disorders, and its complex symptoms bring some difficulties for the clinical diagnosis. In this study, a method based on mathematical modeling of hand movement in spiral drawing was proposed to quantitatively evaluate the performance of patients with Parkinson's disease. Unlike the previous works, the hand movement data in spiral drawing were analyzed and modeled under the polar coordinate system with varied origin. Experimental results gained from the model showed that this method of evaluation was consistent with the clinical diagnosis before and after deep brain stimulation operation. The proposed method based on mathematical modeling in polar coordinate system with varied origin is effective in clinical diagnosis, and it provides a basis for quantitative evaluating the effectiveness of surgery and treatment. © 2011 IEEE.

关键词： Diagnosis

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Cooperative effect analysis of manned/unmanned aerial vehicle team based on fuzzy cognition map

Cooperative effect analysis of manned/unmanned aerial vehicl...

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2011 IEEE International Conference on Signal Processing, Communications and Computing, ICSPCC 2011

作者： Chen, Jun Gao, Xiaoguang Yu, Guanhua Department of System and Control Engineering School of Electronics and Information Northwestern Polytechnical University Xi'an China Department of Automation School of Electronic Information and Electrical Engineering ShangHai Jiao Tong University Shanghai China

ISBN: (纸本)9781457708947

At present, the cooperative operation pattern of manned/unmanned aerial vehicle team has became a focus of international research. To assessment the cooperative effect of manned/unmanned aerial vehicle team, some influential factors are analyzed and a analysis model of cooperative effect is built based on fuzzy cognitive map(FCM). From simulation results, this model can realize organic integration between expert knowledge and quantitative calculation. Through mapping the influential factors with concept nodes of FCM, the dynamic change of cooperative effect can be described more directly. © 2011 IEEE.

关键词： Antennas

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Coding method and application for complicated river network based on surveyed river network

Coding method and application for complicated river network ...

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2011 4th International Symposium on Computational Intelligence and Design, ISCID 2011

作者： Chen, Xuelian Jin, Feng Department of Information Engineering Liaoning Communicate College Shenyang 110122 China Department of Industrial Control System Shenyang Institute of Automation Chinese Academy of Sciences Shenyang 110016 China

ISBN: (纸本)9780769545004

The paper takes National Topographic Database by assuming vector diagram water system with 1:250,000 scale as a data source. A reasonable and efficient coding method for river network is presented, which can solve the coding problem of converged river network, bifurcate river network, crossed river network and water of lake and reservoir. The coding method can reflect the topology of river network and can locate any stream segment of river network directly and operate the topology of river network effectively. At the last, this coding method is applied to parts of stream segments in Taihu Lake basin. As the results, the coding method is made by the paper can solve the coding problem of complicated river network, the upstream-downstream relationship can be easily identified through the coding of stream segment, the self-replicating coding has excellent expansibility and high efficiency, and can be handled easily by the computer. © 2011 IEEE.

关键词： Topology

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Hand movement compensation for patients with Parkinson's disease based on polar coordination system with varied origin

Hand movement compensation for patients with Parkinson's dis...

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2011 4th International Conference on Biomedical engineering and Informatics, BMEI 2011

ISBN: (纸本)9781424493524

Parkinson's disease (PD) is a common movement disorder caused from the neurological dysfunction in basal ganglia. Patients with Parkinson's disease have serious movement problems, such as movement disorders, tremor and rigidity. In this study, a new technique of hand movement compensation for patients with Parkinson's disease based on spiral drawing tasks was proposed. In order to extract the hand movement feature of patients with Parkinson's disease, the polar coordination system with varied origin was used to gain characteristic parameters more accurately. The compensation model was constructed by using the parameters obtained in spiral drawing tasks, and we also do simulation under this model to verify the effectiveness. The simulation results proved that the proposed compensation technique will be effective for assisting the movement of patients with Parkinson's disease. © 2011 IEEE.

关键词： Neurodegenerative diseases

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Forward Modeling to Study topography Effects on EM Signal Using FEM

Forward Modeling to Study topography Effects on EM Signal Us...

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National Postgraduate Conference

作者： Nazabat Hussain M. N. Karsiti Asif Iqbal Automation and Control System Group Department of Electrical & Electronic Engineering Universiti Teknologi PETRONAS

ISBN: (纸本)9781457718823

In electromagnetic (EM) geophysical surveys the most revealing description of EM distortion occurs due to heterogeneity of medium. Prior to determine EM field behavior for stratified earth model, there is need to understand EM field behavior for topography and single interface model. This study involve ingle interface model which embodies two very different situations of conductive and non-conductive half space using finite-element (FE) method. The efficient and accurate modeling is used to calculate the EM field at interface with topography of layered media. The finite element algorithm is implemented in MATLAB and results obtained are also discussed in this chapter.

关键词： Finite-elements Glarkian scheme Electromagnetic geophysical surveys

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Robust partially mode delay-dependent H∞ output feedback control of discrete-time networked control systems

Robust partially mode delay-dependent H∞ output feedback co...

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作者： Chae, Seunghwan Huang, Dan Nguang, Sing Kiong Department of Electrical and Computer Engineering University of Auckland Private Bag 92019 Auckland New Zealand Department of Automation Shanghai Jiao Tong University Key Laboratory of System Control and Information Processing Shanghai 200240 China

ISBN: (纸本)9781457700804

This paper examines robust partially mode delay dependent H ∞ output feedback controller design for discrete-time systems with random communication delays. A finite state Markov chain with partially known transition probabilities is used to model random communication delays between sensors and controller. Based on Lyapunov-Krasovskii functional, a novel methodology for designing a partially mode delay-dependent output feedback controller is proposed. Using cone complementarity linearization algorithm bilinear matrix inequalities (BMIs) are solved to obtain the controller gains. We also show that the results for completely known transition probabilities and completely unknown transition probabilities can be derived as special cases of our result. The effectiveness of the proposed design methodology is demonstrated by a numerical example. To the best of authors' knowledge, the problem of designing an output feedback controller for a partially known transition probability has not been fully investigated. © 2011 AACC American Automatic control Council.

关键词： Networked control systems

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