检索结果-内蒙古大学图书馆

Friction feedforward compensation and position feedforward in CNC machines

Friction feedforward compensation and position feedforward i...

7th Annual International Conference on Electrical Engineering/Electronics, computer, Telecommunications and Information technology, ECTI-CON 2010

作者： Suteeratanapirom, Wijin Rattanawaorahirankul, Rapeepong Laosapan, Chutima Sanposh, Peerayot Chayopitak, Nattapon Tungpimolrut, Kanokvate Kunieda, Hiroaki TAIST Tokyo Tech ICTES Program Department of Electrical Engineering Kasetsart University 50 Phahonyothin Rd. Ladyao Jatujak Bangkok 10903 Thailand Intelligent Mechatronics Automation Robotics and Control Laboratory Department of Electrical Engineering Kasetsart University 50 Phahonyothin Rd. Ladyao Jatujak Bangkok 10903 Thailand Industrial Control and Automation Laboratory National Electronics and Computer Technology Center 112 Thailand Science Park Phahonyothin Rd. Klong 1 Klong Luang Pathumthani 12120 Thailand Department of Electrical and Electronic Engineering Tokyo Institute of Technology S3-65 2-12-1 Ookayama Meguro-ku Tokyo 152-8550 Japan

ISBN: (纸本)9789746724913

This research proposes a method to eliminate friction effect and reduced tracking error on CNC milling machines. A CNC milling machine has many connected mechanical components which have friction effects such as ball screws and rails. To control servo motors which are used to drive X-Y table in CNC milling machine, the conventional PID controller is widely used. In this research, Panasonic motor driver is set to the torque control mode. To compensate the friction effects, the friction feedforward compensation method is proposed. Moreover, to reduce the position tracking error, position feedforward controller is used. The simulation and implementation of position control in one axis of PID with Friction Feedforward Compensation and Position Feedforward Controller (FFC-PFC) are presented.

关键词： Friction

来源：评论

学校读者我要写书评

暂无评论

An analytical framework for a WDM EPON with differentiated services

An analytical framework for a WDM EPON with differentiated s...

引用

2009 4th International Conference on Communications and Networking in China, CHINACOM 2009

作者： Lin, Hui-Tang Lai, Chia-Lin Chang, Wang-Rong Hong, Sheng-Jhe Institute of Computer and Communication Engineering National Cheng Kung University Taiwan ICT-Enabled Healthcare Program Industrial Technology Research Institute Taiwan

ISBN: (纸本)9781424443376

Recently, various analytical models have been proposed to analyze the performance of traditional EPONs. However, these analytical models are not readily applicable to analyze the performance of WDM EPON systems since they are aimed specifically at a single-channel EPON environment. Accordingly, this paper constructs an analytical framework comprising an M/M/1 queuing model and a recursive formulation to analyze the performance of the offline scheduling polling policy in a multi-channel WDM EPON network with differentiated services. The analytical results derived using this model for the mean queuing delay and mean queue length are found to be in good agreement with those obtained from computer simulations.

关键词： Analytical models

来源：评论

学校读者我要写书评

暂无评论

ActionView: A movement-analysis ambulatory monitor in elderly homecare systems

ActionView: A movement-analysis ambulatory monitor in elderl...

引用

2009 IEEE International Symposium on Circuits and Systems, ISCAS 2009

作者： Lin, Hui-Tang Hsieh, Yao-Jung Chen, Ming-Che Chang, Wang-Rong Institute of Computer and Communication Engineering National Cheng Kung University Taiwan ICT-Enabled Healthcare Program Industrial Technology Research Institute-South Taiwan

ISBN: (纸本)9781424438280

This paper develops a movement-analysis ambulatory monitor, designated as ActionView, which can be used in an elderly homecare system to analyze the body movements of elderly individuals whilst in their homes. ActionView monitor is equipped with a kinematic sensor to effectively detect the changes in the upper-body orientation and vertical acceleration of the individual. Furthermore, a remote backend server receives the detected signal from the kinematic sensor via a Wireless Sensor Network (WSN) and then identifies the corresponding body motion. The experimental results show that ActionView has a classification accuracy of approximately 90% when applied to the recognition of everyday elderly actions such as standing up, sitting down, walking, and so forth. ©2009 IEEE.

关键词： Wireless sensor networks

来源：评论

学校读者我要写书评

暂无评论

SPON: A slotted long-reach pon architecture for supporting internetworking capability

SPON: A slotted long-reach pon architecture for supporting i...

引用

2009 IEEE Military Communications Conference, MILCOM 2009

作者： Lin, Hui-Tang Ho, Zhong-Huan Cheng, Hung-Chen Chang, Wang-Rong Institute of Computer and Communication Engineering National Cheng Kung University Taiwan ICT-Enabled Healthcare Program Industrial Technology Research Institute-South Taiwan

ISBN: (纸本)9781424452385

Long-reach optical access technologies have emerged as a promising solution for combining access and metro backhaul networks in a cost-effective manner. This study develops a Slotted PON (SPON) architecture based upon an AWG for long-reach optical access networks. The AWG enables the SPON to achieve wavelength spatial-reuse and to provide an internetworking capability amongst ONUs located within different local access networks. In addition, a Slotted MAC (SMAC) protocol is proposed to arbitrate the access of the individual ONUs over the DWDM layer. The simulation results show that the SPON architecture integrated with SMAC protocol enhances the bandwidth utilization within the network, and therefore achieve a significant reduction in the average packet delay. © 2009 IEEE.

关键词： Network architecture

来源：评论

学校读者我要写书评

暂无评论

A digitally programmable voltage-mode multifunction filter using CCDVCCs

A digitally programmable voltage-mode multifunction filter u...

引用

2009 9th International Symposium on Communications and Information technology, ISCIT 2009

作者： Chanapromma, Chaiyan Jaikla, Winai Siripruchyanun, Montree Computer Engineering Program Faculty of Industrial Technology Uttaradit Rajabhat University Muang Uttaradit 53000 Thailand Electric and Electronic Program Faculty of Industrial Technology Suan Sunandha Rajabhat University Dusit Bangkok 10300 Thailand Department of Teacher Training in Electrical Engineering Faculty of Technical Education King Mongkut's University of Technology North Bangkok Bangkok 10800 Thailand

ISBN: (纸本)9781424445219

This article presents a voltage-mode multi-function filter performing completely standard functions: low-pass, high-pass, band-pass, band-reject and all-pass functions, current controlled differential voltage current conveyors (CCDVCCs). The features of the circuit are that: the quality factor and pole frequency can be tuned independently via the input bias currents: the circuit description is very simple, consisting of merely 2 CCDVCCs, 1 resistor and 2 capacitors. Only one external resistor and without any component matching conditions, the proposed circuit is very appropriate to further develop into an integrated circuit. Additionally, each function response can be selected by suitably selecting input signals with digital method. The PSPICE simulation results are depicted. The given results agree well with the theoretical anticipation. ©2009 IEEE.

关键词： Resistors

来源：评论

学校读者我要写书评

暂无评论

Biology-inspired sensor design

引用

IEEE Potentials 2009年第6期28卷 19-24页

作者： Stroble, Jacquelyn K. Watkins, Steve Stone, Robert American Institute of Physics Discoveries Breakthroughs Inside Science Program United States Department of Electrical and Computer Engineering Applied Optics Laboratory Missouri University of Science and Technology United States Mechanical Industrial and Manufacturing Engineering Department Oregon State University United States

Biology has played a key role in influencing the development and optimization of a significant variety of sensors that provide engineers new ideas for improvements to current technology, new sensor technology, and potential sensor miniaturization. Biological systems, such as plants and insects offer significant methods of flight, imaging, sensing, adaptation to environment, and locomotion. The biological domain provides inspiration at many levels, such as cellular, organism, and species. A biological system is any biological organism, organism subsystem, or portion of an organism that is observed to exist. Abstraction of the biological system using analogical reasoning allows an engineering designer to look for a specific solution through mimicry in an approach to biology-inspired design. The analogous approach relies on the idea of figuring out the basis of overall biological system and of each part or subsystem that achieves the overall goal.

关键词： Biological systems

来源：评论

学校读者我要写书评

暂无评论

A game-theoretic framework for intra-ONU scheduling in integrated EPON/WiMAX networks

A game-theoretic framework for intra-ONU scheduling in integ...

引用

2009 IEEE Global Telecommunications Conference, GLOBECOM 2009

作者： Lin, Hui-Tang Lin, Ying-You Chang, Wang-Rong Chen, Song-Ming Institute of Computer and Communication Engineering National Cheng Kung University Taiwan Department of Electrical Engineering National Cheng Kung University Taiwan ICT-Enabled Healthcare Program Industrial Technology Research Institute-South Taiwan

ISBN: (纸本)9781424441488

An integrated EPON/WiMAX network has been an attractive attention due to its features of achieving stable backhaul transmissions to WiMAX users and reducing the expenditure of network deployment. In implementing such a network, realizing a scheduling mechanism capable of sharing the available bandwidth between the heterogeneous Ethernet and WiMAX traffic in an effective manner is problematic. In the present study, this problem is addressed by using a game-theoretic-based scheme comprising a bankruptcy game and a bargaining game to perform an intra-ONU scheduling function at each ONU within the network. In the proposed approach, each ONU distributes the total amount of bandwidth allocated by the OLT between the Ethernet and WiMAX traffic buffers in accordance with the results of the bankruptcy game. By applying bargaining games, the allocated bandwidth is then further distributed to the different traffic classes within the Ethernet or WiMAX traffic in accordance with their QoS requirements. The simulation results confirm the validity and effectiveness of the proposed approach.

关键词： Ethernet

来源：评论

学校读者我要写书评

暂无评论

Finger Pose Estimation Based on Anatomical Motion Constraints

引用

SICE Journal of Control, Measurement, and System Integration 2009年第6期2卷 357-364页

作者： Akinori Sasaki Hiroshi Hashimoto Sho Yokota Yasuhiro Ohyama School of Computer Science Tokyo University of Technology Master Program of Innovation for Design and Engineering Advanced Institute of Industrial Technology Department of Mechanical Engineering Setsunan University

In this paper, a finger pose estimation method is presented. A direct use of fingers is useful in some applications which require handling of 3D position information. Our finger pose estimation method exploits anatomical constraints on finger motion and ring-shaped markers to achieve simple and practical measurements applicable to daily life situations. The use of anatomical constraints ensures that no exact placement of the markers is required.

关键词： finger hand human motion analysis image processing

来源：评论

学校读者我要写书评

暂无评论

An Acoustically-Analytic Approach to Behavioral Patterns for Monitoring Living Activities

引用

13th International Conference on Biomedical Engineering, ICBME 2008

作者： Liu, Kuang-Che Yan, Gwo-Lang Chiu, Yu-Hsien Tsai, Ming-Shih Chung, Kao-Chi ICT-Enabled Healthcare Program-Industrial Technology Research Institute Tainan Taiwan Department of Computer Science and Information Engineering Southern Taiwan University Tainan Taiwan Potz General Hospital Chiayi Taiwan Institute of Biomedical Engineering National Cheng Kung University Tainan Taiwan

ISBN: (纸本)9783540928409

Risk prevention and alarm are crucial for home care of aged people who live alone. In this paper, an acousticallyanalytic approach is proposed to extract behavioral patterns for modeling and monitoring living activities. An experimental environment was established for collecting sound tracking data of behaviors from daily activities. Each sound tracking data was transcribed to the corresponding sound event sequences by caregivers and psychologists. A living activities mining algorithm is applied to extract meaningful sequences of sound event as behavioral patterns. Then K-means algorithm is adopted to classify events into several fuzzy clusters relating to living activities for modeling behaviors in daily activities. An experimental database consists of 150 sound tracking data was established by collecting three guided behaviors included rolled out of bed to drink water, go to the toilet and watch the fish jar from 5 subjects in two weeks. 476 meaningful sequences of sound events were explored and clustered into 32 quasi-activities. These quasi-activities were further concluded into 5 kinds of behavioral patterns for modeling living activities. The preliminary result shows the potential for modeling and proactively detecting abnormal behaviors or changes of the aged.

关键词： Aged people behaviorism Living Activities

来源：评论

学校读者我要写书评

暂无评论

ActionView: a movement-analysis ambulatory monitor in elderly homecare systems

ActionView: a movement-analysis ambulatory monitor in elderl...

引用

IEEE International Symposium on Circuits and Systems (ISCAS)

作者： Hui-Tang Lin Yao-Jung Hsieh Ming-Che Chen Wang-Rong Chang Institute of Computer and Communication Engineering National Cheng Kung University Taiwan ICT-Enabled Healthcare Program Industrial Technology and Research Institute Taiwan

ISBN: (纸本)9781424438273

This paper develops a movement-analysis ambulatory monitor, designated as ActionView, which can be used in an elderly homecare system to analyze the body movements of elderly individuals whilst in their homes. ActionView monitor is equipped with a kinematic sensor to effectively detect the changes in the upper-body orientation and vertical acceleration of the individual. Furthermore, a remote backend server receives the detected signal from the kinematic sensor via a wireless sensor network (WSN) and then identifies the corresponding body motion. The experimental results show that ActionView has a classification accuracy of approximately 90% when applied to the recognition of everyday elderly actions such as standing up, sitting down, walking, and so forth.

关键词： Senior citizens Wireless sensor networks Remote monitoring Kinematics Acceleration Network servers Motion detection Signal processing Signal detection Legged locomotion

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：