检索结果-内蒙古大学图书馆

作者： Cheng, Lei Wu, Huaiyu Wang, Yongji Zhu, Quanmin Engineering Research Center of Metallurgical Automation and Measurement Technology Ministry of Education Wuhan University of Science and Technology 430081 China Department of Control Science and Engineering Huazhong University of Science and Technology Wuhan 430074 China Faculty of Environment and Engineering University of the West of England Bristol BS16 1QY United Kingdom

ISBN: (纸本)9789881725592

To provide a generic solution to the local minimum problem encountered within flocking systems in uncertain environment, this paper presents a further design of a multi-model flocking control for multiple mobile robots in terms of behavior-based robotics. Within this framework, several new behavior modes are integrated with the sequential flocking strategy, including multi-robot rigid-body bouncing behavior, multi-robot wall-following behavior and their fusion state. The simulation studies are comprehensively conducted to demonstrate the well environment-adaptability of the proposed procedure in static/dynamic irregular obstacles environment. © 2011 Chinese Assoc of automation.

关键词： Multipurpose robots

来源：评论

学校读者我要写书评

暂无评论

An improved topology inference algorithm based on end-to-end measurements

An improved topology inference algorithm based on end-to-end...

引用

International Conference on Pervasive Computing Signal Processing and Applications (PCSPA)

作者： Yang, Jingli Jiang, Shouda Wei, Chang'An Department of Automation Measurement and Control Engineering Harbin Institute of Technology Harbin China

ISBN: (纸本)9780769541808

Network topology inference, one of the studies of the network tomography, is the proposition of the network link-level performance inference. MLE and grouping methods recently have been proposed as means to infer network logical topology. The time spent on MLE increased sharply with the size of network, which may restrict the technique to be used in practice. The grouping method with less computation may lead to great errors because of the use of fixed threshold. In order to improve the disadvantages of the grouping method, this paper proposes an improved algorithm based on th grouping method, which dynamically adapts the threshold according to the estimation of link loss rate. The simulation results show that the improved algorithm has greater performance. © 2010 IEEE.

关键词： Network topology

来源：评论

学校读者我要写书评

暂无评论

A novel suppression algorithm of power line interference in ECG signal

A novel suppression algorithm of power line interference in ...

引用

International Conference on Pervasive Computing Signal Processing and Applications (PCSPA)

作者： Dai, Huhe Jiang, Shouda Wei, Chang'An Department of Automation Measurement and Control Engineering Harbin Institute of Technology Harbin China

ISBN: (纸本)9780769541808

To eliminate interference within electrocardiogram signal (ECS) recorded under complicated Power Line (PL) circumstances, a novel algorithm is proposed. ECS is divided into two parts, linear segment and the nonlinear one. A new linear segment determination rule is presented, by which linear and non-linear segment can be distinguished within single PL period by using the symmetry of sinusoidal wave. Correlation algorithm is used to calculate the amplitude and initial phase of Power Line Interference (PLI). Performance of the proposed algorithm is compared with and Subtraction Procedure (SP) on MATLAB platform. The presented algorithm evidently improves PLI evaluation update times, and avoids boundary distortion, and efficiently eliminates PLI. Experiment results show that the new algorithm is superior in filtering amplitude-changed PLI. © 2010 IEEE.

关键词： Electrocardiograms

来源：评论

学校读者我要写书评

暂无评论

Development of camshaft journals multi-parameters measuring instrument

Development of camshaft journals multi-parameters measuring ...

引用

International Conference on Pervasive Computing, Signal Processing and Applications

作者： Xu, Lian-Hu Yuan, Yi-Bao Wang, Yu-Hua Department of Automation Measurement and Control Engineering Harbin Institute of Technology Harbin China

ISBN: (纸本)9780769541808

Camshaft is the key component of automobile engine valve timing mechanism, whose machining precision will affect overall performance of automobile engine. This paper presents a kind of camshaft journals multi-parameters measuring instrument based on the actual requirement of camshaft production. The camshaft measuring instrument was auto measuring instrument composed of pneumatic control system, precision measurement system and computer-aided measurement system, which was developed for measuring journal diameter, roundness, conicity, journal radial runout relative to center holes connection, and number 2, 3, 4 journal radial runout relative to number 1 and 5 journal center connection, etc. The measurement repetition and stability were perfect, it was fit for high precision and fast measurement at production site. © 2010 IEEE.

关键词： Computer control systems

来源：评论

学校读者我要写书评

暂无评论

An unsupervised grid-based approach for clustering analysis

引用

Science China(Information Sciences) 2010年第7期53卷 1345-1357页

作者： YUE ShiHong1, WANG JeenShing2, TAO Gao1 & WANG HuaXiang1 1School of Electrical engineering and automation, Tianjin Key Laboratory of Process measurement and control, Tianjin University, Tianjin 300072, China 2department of Electrical engineering, National Cheng Kung University, Tainan 701, China 1. School of Electrical Engineering and Automation Tianjin Key Laboratory of Process Measurement and Control Tianjin University Tianjin 300072 China2. Department of Electrical Engineering National Cheng Kung University Tainan 701 China

In recent years, the growing volume of data in numerous clustering tasks has greatly boosted the existing clustering algorithms in dealing with very large datasets. The K-means has been one of the most popular clustering algorithms because of its simplicity and easiness in application, but its effciency and effectiveness for large datasets are often unacceptable. In contrast to the K-means algorithm, most existing grid-clustering algorithms have linear time and space complexities and thus can perform well for large datasets. In this paper, we propose a grid-based partitional algorithm to overcome the drawbacks of the K-means clustering algorithm. This new algorithm is based on two major concepts: 1) maximizing the average density of a group of grids instead of minimizing the minimal square error which is applied in the K-means algorithm, and 2) using grid- clustering algorithms to thoroughly reformulate the object-driven assigning in the K-means algorithm into a new grid-driven assigning. Consequently, our proposed algorithm obtains an average speed-up about 10-100 times faster and produces better partitions than those by the K-means algorithm. Also, compared with the K-means algorithm, our proposed algorithm has ability to partition any dataset when the number of clusters is unknown. The effectiveness of our proposed algorithm has been demonstrated through successfully clustering datasets with different features in comparison with the other three typical clustering algorithms besides the K-means algorithm.

关键词： clustering grid-based algorithm K-means algorithm

来源：评论

学校读者我要写书评

暂无评论

Exponential Synchronization of Master-Slave Lur'e Systems via Intermittent Time-Delay Feedback control

引用

Communications in Theoretical Physics 2010年第10期 679-686页

作者：王一晶郝建娜左志强 Tianjin Key Laboratory of Process Measurement and Control School of Electrical Engineering and AutomationTianjin University School of Electrical Engineering and Automation Tianjin University Department of Mathematics City University of Hong Kong

This paper concerns with the master-slave exponential synchronization analysis for a class of general Lur'esystems with time *** from the previous methods based on the differential inequality technique, a newapproach is proposed to derive some new exponential synchronization *** restriction that the control widthhas to be larger than the time delay is *** leads to a larger application scope for our ***, notranscendental equation is involved in the obtained result, which reduces the computational *** examples aregiven to validate the theoretical results.

关键词： exponential synchronization intermittent control delayed feedback control Razumikhin stabilitytheory Chua＇s circuits

来源：评论

学校读者我要写书评

暂无评论

Single source current drive patterns for electrical impedance tomography

Single source current drive patterns for electrical impedanc...

引用

2010 IEEE International Instrumentation and measurement Technology Conference, I2MTC 2010

作者： Zhang, Lifeng Wang, Huaxiang Tianjin Key Laboratory of Process Measurement and Control School of Electrical Engineering and Automation Tianjin University Tianjin China Department of Automation North China Electric Power University Baoding China

ISBN: (纸本)9781424428335

Electrical impedance tomography (EIT) is a technique for reconstructing conductivity of an inhomogeneous medium by injecting currents at the boundary of an object and measuring the resulting changes in voltage. The SNR of acquisitive data and the reconstructed image quality of EIT system are directly determined by current drive patterns. In this paper, eight current drive patterns with the same boundary voltage measurement strategy have been studied. The isopotential lines, the number of independent measurements, measured voltage dynamic range, voltage change with conductivity change and reconstructed image quality of these patterns are compared, through which an optimal current drive pattern was obtained. © 2010 IEEE.

关键词： Image reconstruction

来源：评论

学校读者我要写书评

暂无评论

Observer-based estimation of pressure signals in hydrostatic transmissions

Observer-based estimation of pressure signals in hydrostatic...

引用

作者： Schulte, Horst Gerland, Patrick Department of Engineering I Electrical Engineering and Automation Wilhelminenhofstr. 75A 12459 Berlin Germany University of Kassel Faculty of Mechanical Engineering Measurement and Control Moenchebergstr. 7 34125 Kassel Germany

ISBN: (纸本)9783902661722

Hydrostatic transmissions, also called hydrostatic gears, have been widely used in mobile working machines and off-road vehicles such as construction and agricultural machines. This kind of transmission offers important advantages like continuously variable transmission with high power density, maximum tractive force at low speeds and reversing without changing gear. The automatic electronic control of hydrostatic transmissions, which depend on a number of measurable values, has become more common in industrial practice. To ensure the reliability and safety at least a two-channel redundant system for the measuring channels is required. In this paper, a general model-based approach using a Takagi-Sugeno (T-S) fuzzy observer for analytical redundancy of the oil pressure measuring process in hydrostatic transmissions is developed. It has been shown by experimental results that this approach can be used to estimate the pressure values under varying load conditions and different driving situations. © 2010 IFAC.

关键词： Off road vehicles

来源：评论

学校读者我要写书评

暂无评论

Development of Camshaft Journals Multi-parameters Measuring Instrument

Development of Camshaft Journals Multi-parameters Measuring ...

引用

International Conference on Pervasive Computing Signal Processing and Applications (PCSPA)

作者： Lian-Hu Xu Yi-Bao Yuan Yu-Hua Wang Department of Automation Measurement and Control Engineering Harbin Institute of Technology Harbin China

关键词： Camshafts Instruments Rotation measurement measurement uncertainty Velocity measurement Equations

来源：评论

学校读者我要写书评

暂无评论

Separation of gas - Liquid two-phase flow through independent component analysis

Separation of gas - Liquid two-phase flow through independen...

引用

作者： Xu, Yanbin Wang, Huaxiang Cui, Ziqiang Dong, Feng Yan, Yong Tianjin Key Laboratory of Process Measurement and Control School of Electrical Engineering and Automation Tianjin University Tianjin 300072 China Department of Automation Nankai University Tianjin 300071 China Department of Electronics University of Kent CT2 7NT Canterbury United Kingdom

Two-phase flow measurement has attracted a major interest in the past four decades due to its wide range of applications in industry. This paper introduces a new method to separate the gas phase from the liquid phase through a blind source separation algorithm, without a separate device, based on the assumption that the two phases are separated and their independence is reflected in the statistical relation between the electrical signals generated by the process. Experimental data are obtained from a gasliquid two-phase flow rig through electrical resistance tomography (ERT). An independent component analysis (ICA) method is applied to separate the gas phase from the liquid phase. The efficiency of the ICA method with the ERT data is assessed through experiments. The independent components (ICs) are interpreted by comparing them with the reconstructed images by ERT. The comparative studies show that ICA is effective in extracting phase information of gasliquid two-phase flow, particularly for stratified, slug, and wave flows. Based on the extracted ICs, the cross-correlation technique is adopted to estimate the mean velocity of the liquid phase in the central area, the gas phase at the interface, and the liquid phase around the pipe wall and the liquid slug. Through correlating ICs representing different spatially independent processes from the upstream and downstream planes after the elimination of cyclostationary characteristics of ICs, the mean velocity of different spatially processes is obtained. © 2006 IEEE.

关键词： Independent component analysis

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：