检索结果-内蒙古大学图书馆

Intelligent diagnostic health management of power transmission systems: An experimental validation

International Journal of COMADEM 2010年第2期13卷 46-58页

作者： Onsy, Ahmed Bicker, Robert Shaw, Brian Mechatronics Group and Design Unit Stephenson Building Newcastle University NE1 7RU United Kingdom School of Mechanical and Systems Engineering United Kingdom Department of Robotics Group School of Mechanical and Systems Engineering United Kingdom Design Unit Gear Technology Centre School of Mechanical and Systems Engineering British Gear Association United Kingdom

Power transmissions are one of the most important parts of any mechanical system, and in order to achieve reliable operation robust and effective maintenance strategies must be used to trace the condition of the operating transmission, classifying faults, and predicting the onset of failure. This paper presents a novel intelligent diagnostic health management system that is able to monitor different gear faults by combining vibration, acoustic emission, and oil debris analysis with fuzzy logic sensory fusion algorithms. An intelligent diagnostic health management system (IDHMS) has been implemented on a back-to-back gearbox and can be adapted to monitor the behaviour of transmission systems in automotive, aircraft, wind turbine, and industrial machinery. The study describes the operation of the online IDHMS under variable conditions and its ability in detecting transmission gear defects and thus preventing sudden unexpected failures. The results support the recent trend in using IDHMSs in CBM strategies. © 2010 COMADEM International.

关键词： Fuzzy logic

来源：评论

学校读者我要写书评

暂无评论

Cell-cell adhesion force measurement using nano picker via nanorobotic manipulators inside ESEM

Cell-cell adhesion force measurement using nano picker via n...

引用

2010 10th IEEE Conference on Nanotechnology, NANO 2010

作者： Shen, Yajing Ahmad, Mohd Ridzuan Nakajima, Masahiro Kojima, Seiji Homma, Michio Fukuda, Toshio Department of Micro-Nano Systems Engineering Nagoya University Nagoya 464-8603 Japan Department of Mechatronics and Robotics Faculty of Electrical Engineering Universiti Teknologi Malaysia Skudai 81310 Malaysia Center for Micro-Nano Mechatronics Nagoya University Nagoya 464-8603 Japan Department of Biological Science Graduate School of Science Nagoya University Nagoya 464-8603 Japan

ISBN: (纸本)9781424470334

Cell-cell adhesion force is important for cell activities. In this paper, a novel cell-cell adhesion force measurement method using nano picker was proposed based on the nanorobotic manipulation system inside an environmental scanning electron microscopy (ESEM). The nano picker was fabricated from atomic force microscopy(AFM) cantilever by focused ion beam(FIB) etching. The spring constant of the nano picker was calibrated by nano manipulation approach. The cell which was selected for adhesion force measurement was first positioned on the top of another cell by a micro probe. Then, the nano picker was inserted to the join area between the two cells. Finally, the nano picker lifted the top cell by the actuating of nano manipulator inside environmental scanning electron microscopy ESEM. The cell-cell adhesion force can be measured based on the deflection of the cantilever during the cell separation. This method allowed the observation and manipulation of cell at nano scale simultaneously. Study of cell adhesion will benefit the understanding the mechanism of cell spreading, proliferation and so on. ©2010 IEEE.

关键词： Cells

来源：评论

学校读者我要写书评

暂无评论

Development of a Pipe Cleaning Robot for Air Conditioning System

Development of a Pipe Cleaning Robot for Air Conditioning Sy...

引用

IEEE International Conference on robotics and Biomimetics

作者： Changlong Ye Shugen Ma Huaiyong Li Junjun Yang School of Mechatronics Engineering Shenyang Aerospace University Department of Robotics Ritsumeikan University

ISBN: (纸本)9781424493197

A pipe cleaning robot for central air-condition named PCV-1 is developed to adapt to the pipe environment. This robot consists of three parts: middle part and front part as well as back part. One part in the middle of the robot is the driving unit, which utilizes the spring mechanism to get the normal pressure and utilizes the active driving wheels to actuate the robot. The front part and back part are similar in structure. These two parts can modulate the turn angle of the robot to realize turn motion for the pipe adaptation. This robot can move in the vertical pipe beside in the horizontal pipe, which enables it move in the air conditioning pipe system. The movement capability of this robot was verified through experiments.

关键词： Robot Air conditioning systems cleaning robots turning angle Pipe DRIVES Piping systems horizontal pipe Standpipes Porcine circovirus-1

来源：评论

学校读者我要写书评

暂无评论

Extraction of 3D images using pitch-actuated 2D laser range finder for robotic vision

Extraction of 3D images using pitch-actuated 2D laser range ...

引用

2010 8th IEEE International Workshop on Robotic and Sensors Environments, ROSE 2010

作者： Ben-Tzvi, Pinhas Charifa, Samer Shick, Michael Robotics and Mechatronics Lab. Department of Mechanical and Aerospace Engineering George Washington University Washington DC United States Computer Sciences Corporation Alexandria VA United States Department of Computer Science George Washington University Washington DC United States

ISBN: (纸本)9781424471461

Volumetric mapping is essential for recognizing the 3D environment and consequentially for the decision making process for special-task mobile robots (such as stair climbing, inspection, or search and rescue). In this paper, we propose a fast surface detection algorithm based on point cloud data from a small pitch-actuated laser range finder mounted on a mobile manipulator arm. The developed algorithm is mainly composed of two steps: (i) gradient based classification;and (ii) Recursive Connected Component Labeling (RCCL) algorithm. The algorithm was experimentally validated. A complete segmentation of different planes in the environment was also successfully accomplished. © 2010 IEEE.

关键词： Computer vision

来源：评论

学校读者我要写书评

暂无评论

Workspace comparisons of setup configurations for human-robot interaction

Workspace comparisons of setup configurations for human-robo...

引用

2010 IEEE/RSJ International Conference on Intelligent Robots and Systems

作者： Franziska Zacharias Ian S. Howard Thomas Hulin Gerd Hirzinger Institute of Robotics and Mechatronics German Aerospace Center Wessling Germany Department of Engineering University of Cambridge Cambridge UK

In virtual assembly verification or remote maintenance tasks, bimanual haptic interfaces play a crucial role in successful task completion. This paper proposes a method for objectively comparing how well a haptic interface covers the reachable workspace of human arms. Two system configurations are analyzed for a recently introduced haptic device that is based on two DLR-KUKA light weight robots: the standard configuration, where the device is opposite the human operator, and the ergonomic configuration, where the haptic device is mounted behind the human operator. The human operator directly controls the robotic arms using handles. The analysis is performed using a representation of the robot arm workspace. The merits of restricting the comparisons to the most significant regions of the human workspace are discussed. Using this method, a greater workspace correspondence for the ergonomic configuration was shown.

关键词： Humans Manipulators Robot kinematics Kinematics Haptic interfaces Collision avoidance

来源：评论

学校读者我要写书评

暂无评论

Uncertainty of calibration of 2d planar coordinate measuring machine

Uncertainty of calibration of 2d planar coordinate measuring...

引用

9th International Science Conference Coordinate Measuring Technique

作者： Furutani, Ryoshu Ozaki, Miyu Department of Mechanical Engineering School of Engineering Tokyo Denki University Kanda- Nishiki-cho 2-2 Chiyoda 101-8457 Tokyo Japan Department of Robotics and Mechatronics School of Science and Technology for Future Life Tokyo Denki University Kanda-Nishiki-cho 2-2 Chiyoda 101-8457 Tokyo Japan

ISBN: (纸本)9788362292561

When the kinematic parameters of 2D planar coordinate measuring machine are calibrated in self-calibration method, it is shown how to estimate the uncertainty of calibration and how to estimate the uncertainty of measurement.. In this paper, the uncertainty of probing and the uncertainty of sensors are considered as the contributors of uncertainty. Two different types of CMMs are applied to two different artefacts for calibration and those measures in some different orientations for estimation of uncertainty. The effectiveness of the difference of CMMs, the artefacts and the measurement orientations are compared. As a result, it is proved that the uncertainty distribution is different in the orientation of measurement and the uncertainty could be smaller by selecting measurement orientation.

关键词： Coordinate measuring machines

来源：评论

学校读者我要写书评

暂无评论

Nanofork and line-patterned substrate for measuring single cells adhesion force inside ESEM

Nanofork and line-patterned substrate for measuring single c...

引用

2010 10th IEEE Conference on Nanotechnology, NANO 2010

作者： Ahmad, Mohd Ridzuan Nakajima, Masahiro Kojima, Masaru Kojima, Seiji Homma, Michio Fukuda, Toshio Dept. of Mechatronics and Robotics Universiti Teknologi Malaysia 81310 UTM Skudai Johor Malaysia Department of Micro-Nano Systems Engineering Nagoya University Nagoya 464-8603 Japan Department of Biological Science Graduate School of Science Nagoya University Nagoya 464-8602 Japan

ISBN: (纸本)9781424470334

In this paper, single cell adhesion force was measured using a nanofork. The nanofork was used to pick-up a single cell on a line-patterned substrate inside ESEM. The line-patterned substrate was used to provide small gaps between the single cells and the substrate. Therefore, the nanofork could be inserted through these gaps in order to successfully pick-up a single cell. Adhesion force was measured during the cell pick-up process from the deflection of the cantilever beam. The nanofork was fabricated using focused ion beam (FIB) etching process while the line-patterned substrate was fabricated using nanoimprinting technology. As to investigate the effect of contact area on the strength of the adhesion force, two sizes of gap distance of line-patterned substrate were used, i.e. 1 μm and 2 μm. Results showed that cells attached on the 1 μm gap line-patterned substrate required more force to be released as compared to the cells attached on the 2 μm gap line-patterned substrate. ©2010 IEEE.

关键词： Cells

来源：评论

学校读者我要写书评

暂无评论

Analysis of relation between operator's control performance and the skill level

Analysis of relation between operator's control performance ...

引用

Annual Conference of Industrial Electronics Society

作者： Yukihito Suzuki Masaki Izutsu Jun Ishikawa Department of Advanced Multidisciplinary Engineering Tokyo Denki University Tokyo Japan Department of Robotics and Mechatronics Tokyo Denki University Tokyo Japan

There are many systems to include humans in the mechanical control loops. In such systems, low-skilled operators are considered to cause accidents. To prevent these kinds of accidents, analysis of human's model with various methods has been studied. “Crossover model” is well known as one of the models to analyze human-machine systems. However, many of those researches have analyzed humans when they used one hand in operating the systems. In this paper, it is considered that humans use both hands in operation, and an analysis approach is proposed to evaluate human dynamic characteristics based on human's control performance and operation performance in bimanual (two hands) operation. The purpose of this research is to clarify relation between human's control performance and operation performance. It is also confirmed that analysis based on frequency responses of the crossover model is valid in the bimanual case as same as in the single-hand case. From experimental results of the bimanual operation, the proposed evaluation method successfully works to quantitatively evaluate human's control performance and operation performance.

关键词： Transfer functions Training Force Frequency control Humans Control systems Impedance

来源：评论

学校读者我要写书评

暂无评论

Testbed for modeling and inventory regulation of dynamic supply chains

Testbed for modeling and inventory regulation of dynamic sup...

引用

International Conference on Electrical engineering Computing Science and Automatic Control

作者： Rodriguez-Angeles, A. Guadarrama-Mendoza, R. Morales-Diaz, A. Cinvestav-IPN Department of Electrical Engineering Mechatronics Group Av. Instituto Politécnico Nacional 2508 07300 México D.F. Mexico Cinvestav-IPN Unidad Saltillo Robotics and Advanced Manufacturing Group Ramos Arizpe Mexico

ISBN: (纸本)9781424473120

There exist several ways to model supply chain systems, from discrete models to stochastic ones. Among them there is a modeling approach based on traffic flow theory which considers inventory levels and material flows. The resulting models are linear, although they are subject to constraints such as maximum production rates, as well as non negative inventory values and material flows. These constraints must be taken into account when designing a control strategy. In previous works of the authors a bounded PI control for inventory level regulation was introduced. The closed loop system was therefore a non liner one, due to the control boundaries. A stability analysis of the closed loop system based on linearization techniques was performed resulting in sufficient conditions for local asymptotic stability. Besides the theoretical framework the work was supported by numerical simulations on a petrochemical plant. In this work a testbed platform form by water tanks is developed. The systems allows applying the proposed modeling and control techniques, such that the experimental results agree with the simulated ones. © 2010 IEEE.

关键词： Supply chains

来源：评论

学校读者我要写书评

暂无评论

An embedded feature-based stereo vision system for autonomous mobile robots

An embedded feature-based stereo vision system for autonomou...

引用

International Workshop on Robot Sensing (ROSE)

作者： Pinhas Ben-Tzvi Xin Xu Robotics and Mechatronics Lab Department of Mechanical and AeroSpace Engineering George Washington University Washington D.C. DC USA

Stereo vision systems have recently become an essential part for most autonomous mobile robots. There are several commercially available stereo vision products, which have been used for autonomous functions in mobile robot platforms. However, most of them are not suitable for compact sized robots. This paper presents an embedded stereo vision system that provides flexible baseline for robots of compact size. In terms of hardware, it provides baseline flexibility, and can be easily fitted into any robot. In terms of software, a feature based stereo vision algorithm is proposed to improve the real-time performance of the stereo vision system. The proposed featured-based method is evaluated by comparing it with the area-based method using standard test images. The results show that the computational time is significantly reduced (reduced by 60% in a relatively complex image). The proposed method is also implemented in real world environments in order to test its effectiveness.

关键词： Stereo vision Feature extraction Cameras Calibration Robot vision systems Algorithm design and 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：