检索结果-内蒙古大学图书馆

作者： Han, Thanh-Trung Sam, Ge Shuzhi Sun, Fuchun School of Automation Engineering University of Electronic Science and Technology of China Chengdu 611731 China University of Electronic Science and Technology of China Chengdu 611731 China Robotics Institute University of Electronic Science and Technology of China Chengdu 611731 China Department of Computer Science and Technology Tsinghua University Beijing 100084 China

ISBN: (纸本)9787894631046

This paper addresses the problem of output tracking control for a class of nonlinear distributed time-delay systems whose control gains are delay-dependent and whose uncertainty involves both delay times and system nonlinearities. We introduce the framework of using delay-independent control to deal with unknown distributed delay dependence and using switching-based adaptive neural control to deal with unknown delay-dependent control gains. The control is designed in consideration of a Razumikhin norm condition on retarded functional state entailing efficiency with distributed delay dependence.

关键词： Timing circuits

来源：评论

学校读者我要写书评

暂无评论

A survey on intelligent interaction and cooperative control of multi-robot systems

A survey on intelligent interaction and cooperative control ...

引用

International Conference on Control and Automation (ICCA)

作者： Anmin Zhu Simon X. Yang School of Computer Science and Software Engineering Shenzhen University China Advanced Robotics and Intelligent Systems (ARIS) Laboratory School of Engineering University of Guelph Guelph ONT Canada

Multi-robot systems have drawn the attention of many different research communities, such as physics, electronics, control, computer science, mathematics, and biology. Motivated by the growing popularity of multi-robot system and related coordination approaches, this paper surveys and analyzes the relevant literature, including six classification dimensions: system architectures, communication and robotic sensor networks, swarm intelligence and swarm robotics, cooperation among robots, applications, and research projects.

关键词： Control systems Multirobot systems Robot sensing systems Robot kinematics Intelligent robots Physics Communication system control Biological control systems computer science Mathematics

来源：评论

学校读者我要写书评

暂无评论

Fuzzy rule based neuro-dynamic programming for mobile robot skill acquisition on the basis of a nested multi-agent architecture

Fuzzy rule based neuro-dynamic programming for mobile robot ...

引用

IEEE International Conference on robotics and Biomimetics

作者： John N. Karigiannis Theodoros I. Rekatsinas Costas S. Tzafestas School of Electrical & Computer Engineering Division of Signals Control & Robotics National and Technical University of Athens Athens Greece School of Computer Science University of Maryland College Park MD USA

Biologically inspired architectures that mimic the organizational structure of living organisms and in general frameworks that will improve the design of intelligent robots attract significant attention from the research community. Self-organization problems, intrinsic behaviors as well as effective learning and skill transfer processes in the context of robotic systems have been significantly investigated by researchers. Our work presents a new framework of developmental skill learning process by introducing a hierarchical nested multi-agent architecture. A neuro-dynamic learning mechanism employing function approximators in a fuzzified state-space is utilized, leading to a collaborative control scheme among the distributed agents engaged in a continuous space, which enables the multi-agent system to learn, over a period of time, how to perform sequences of continuous actions in a cooperative manner without any prior task model. The agents comprising the system manage to gain experience over the task that they collaboratively perform by continuously exploring and exploiting their state-to-action mapping space. For the specific problem setting, the proposed theoretical framework is employed in the case of two simulated e-Puck robots performing a collaborative box-pushing task. This task involves active cooperation between the robots in order to jointly push an object on a plane to a specified goal location. We should note that 1) there are no contact points specified for the two e-Pucks and 2) the shape of the object is indifferent. The actuated wheels of the mobile robots are considered as the independent agents that have to build up cooperative skills over time, in order for the robot to demonstrate intelligent behavior. Our goal in this experimental study is to evaluate both the proposed hierarchical multi-agent architecture, as well as the methodological control framework. Such a hierarchical multi-agent approach is envisioned to be highly scalable for the contr

关键词： Mobile robots computer architecture Joints Robot kinematics Function approximation Collaboration

来源：评论

学校读者我要写书评

暂无评论

Dilatometric study of ferroelectric Rb2CdI4 monoclinic crystal grown by czochralski method

Dilatometric study of ferroelectric Rb2CdI4 monoclinic cryst...

引用

12th International Meeting on Ferroelectricity, IMF-12 and the 18th IEEE International Symposium on Applications of Ferroelectrics, ISAF-18

作者： Yamaguchi, T. Gotou, S. Miyoshi, T. Kasano, H. Mitsui, T. Kurihama, T. Shimizu, F. Takashige, M. Department of Electrical Engineering School of Science and Engineering Meisei University Hino-shi Tokyo 191-8506 Japan Electrical Engineering Graduate School of Science and Engineering Meisei University Hino-shi Tokyo 191-8506 Japan Department of Physics Graduate School of Science and Engineering Yamaguchi University Yamaguchi-shi Yamaguchi 753-8512 Japan Laboratory of Developmental Program Faculty of Pharmaceutical Sciences Teikyo University Sagamihara-shi Kanagawa 229-0195 Japan Department of Electronics and Information Engineering College of Engineering Chubu University Kasugai-shi Aichi 487-8501 Japan Department of Electronics and Computer Science College of Science and Engineering Iwaki Meisei University Iwaki-shi Fukushima 970-8551 Japan

Crystal growth of Rb2CdI4 was performed by Czochralski method. Transparent colourless crystals with monoclinic structure were obtained. Temperature dependence of the dielectric constant along the b-axis was measured with variation of frequency. The thermal expansions x i (i = a, b, c and a′;a′ = a + c) along the four independent axes were measured both by clip-type strain-gauge dilatometer and X-ray diffraction methods. These results show distinct anomalies associated with the ferroelectric transition at TC= 210 K. Copyright © 2010 Taylor & Francis Group, LLC.

关键词： X ray diffraction

来源：评论

学校读者我要写书评

暂无评论

Mammalian cell sorting using ∝FACS

Mammalian cell sorting using ∝FACS

引用

作者： Cho, Sung Hwan Chen, Chun Hao Tsai, Frank S. Godin, Jessica Lo, Yu-Hwa Materials Science and Engineering Program Jacobs School of Engineering University of California San Diego San Diego CA United States Department of Bioengineering Jacobs School of Engineering University of California San Diego San Diego CA United States Department of Electrical and Computer Engineering Jacobs School of Engineering University of California San Diego San Diego CA United States

K562 mammalian cells are sorted using a highly integrated microfabricated fluorescence-activated cell sorter (∝FACS). The sample cells are purified with an enrichment factor of 230 at a high throughput (> 1,000 ce... 详细信息

ISBN: (纸本)9781557528902

关键词： Cytology

来源：评论

学校读者我要写书评

暂无评论

YES: A NSF S-STEM scholarship program experience at the University of Central Florida

YES: A NSF S-STEM scholarship program experience at the Univ...

引用

2010 ASEE Annual Conference and Exposition

作者： Massi, Lisa Georgiopoulos, Michael Young, Cynthia Ducharme, Alfred Ford, Cameron Small, Kim Lancey, Patrice Bhati, Divya College of Engineering and Computer Science University of Central Florida United States School of Electrical Engineering and Computer Science University of Central Florida United States Department of Mathematics College of Sciences University of Central Florida United States Management Department UCF College of Business UCF Center for Entrepreneurship and Innovation United States NSF-funded S-STEM Program University of Central Florida United States

According to a study conducted by J. D. Angrist (MIT) and colleagues1 involving 1,600 students at a large Canadian university (the equivalent of an American state university with heavily subsidized tuition), the combination of participation in (a) a scholarship program and (b) academic support services resulted in higher grade achievement and retention for females (but both males and females used support services and peer advising at higher rates), compared to groups of students who participated in either (a) or (b) but not both. A report by the Educational Policy Institute2 lists financial aid as one critical factor that affects the decision to pursue a college degree and success in degree attainment for minorities. This paper reports the progress of a persistence-to-graduation scholarship program funded under the National science Foundation Scholarships (NSF) in science, Technology, engineering, and Mathematics (S-STEM) program. We named our program YES (Young Entrepreneur and Scholar) scholarship program. The goal of YES is to enable academically talented, financially needy students to enter the workforce (Entrepreneurship Path) or to pursue a graduate degree (Research Path) following the completion of a baccalaureate degree in a targeted STEM discipline. This goal is facilitated through scholarships offered by the program to qualified student participants in the last two college years (maturing years - juniors and seniors), a mentorship program (faculty and industry mentors), and enhanced educational opportunities (Distinguished Speaker seminar series, Symposium, learning community). The program continues the efforts of and recruits from another NSF-funded program, science, Technology, engineering, and Mathematics Talent Expansion (STEP) program, which focuses on the first two student college years (early years- freshman and sophomore) and has been successful in retaining STEM students at significantly higher rates than academically similar STEM students at the

关键词： Students

来源：评论

学校读者我要写书评

暂无评论

Power efficient voltage islanding for Systems-on-chip from a floorplanning perspective 10

Power efficient voltage islanding for Systems-on-chip from a...

引用

Design, Automation and Test in Europe Conference and Exhibition

作者： Pavel Ghosh Arunabha Sen Computer Science and Engineering Program School of Computing Informatics and Decision Systems Engineering Arizona State University Tempe AZ USA

ISBN: (纸本)9783981080162

Power consumption can be significantly reduced in Systems-on-Chip (SoC) by scaling down the voltage levels of the Processing Elements (PEs). The power efficiency of this Voltage Islanding technique comes at the cost of energy and area overhead due to the level shifters between voltage islands. Moreover, from the physical design perspective it is not desirable to have an excessive number of voltage islands on the chip. Considering voltage islanding at an early phase of design as during floorplanning of the PEs can address various of these issues. In this paper, we propose a new cost function for the floorplanning objective different from the traditional floorplanning objective. The new cost function not only includes the overall area requirement, but also incorporates the overall power consumption and the design constraint imposed on the maximum number of voltage islands. We propose a greedy heuristic based on the proposed cost function for the floorplanning of the PEs with several voltage islands. Experimental results using benchmark data study the effect of several parameters on the outcome of the heuristic. It is evident from the results that power consumption can be significantly reduced using our algorithm without significant area overhead. The area obtained from the heuristic is also compared with the optimal, and found to be within 4% of the optimal on average, when area minimization is given the priority.

关键词： Voltage Energy consumption Cost function Power engineering and energy Minimization Very large scale integration computer science Power engineering computing Informatics Systems engineering and theory

来源：评论

学校读者我要写书评

暂无评论

Development of design tool for hybrid power systems of hybrid electric military combat vehicles

Development of design tool for hybrid power systems of hybri...

引用

2010 IEEE Vehicle Power and Propulsion Conference, VPPC 2010

作者： Choi, Dong Hwan Lee, Seong Jun Cho, Bo-Hyung Yoon, Yeo Giel Samsung Techwin Modeling and Simulation Team Research Center Defense Program PanGyo Techno-valley SeongNam Korea Republic of Seoul National Univ. School of Electrical Engineering and Computer Science Seoul National University Seoul Korea Republic of

ISBN: (纸本)9781424482191

This paper introduces a developed hybrid power modeling and simulation tool for series hybrid electric military combat vehicles. A simulation tool for determining optimal hybrid power in hybrid components such as motor, engine, generator, and storages and for evaluating designed driving control strategy and energy management strategy is essential in designing a hybrid system. The developed tool is based on the MATLAB/Simulink with simple GUI interface. It supports various series hybrid structures of military vehicles, driving cycles, and driving control strategies. It supports two types of analysis methods: a forward facing method and a backward facing method. In this research, in order to determine the motor's power and spec, the developed tool is incorporated with the commercial multibody dynamics software, VirtualLab/Motion developed by LMS International. The objectives of the iterative works between design of optimal hybrid power systems and optimal driving control strategy include reducing the overall fuel consumption and optimizing the mobility performance to cost, mass and volume space claims of the vehicles' power systems, and enabling those vehicles with enhanced electrical power generation and storage capabilities useful for field operations, too. A 20ton 8x8 series hybrid electric vehicle is considered as design example. This paper shows the results of determined hybrid components' power and shows the SOC variation and fuel efficiency for various driving strategies. © Copyright 2011 IEEE - All Rights Reserved.

关键词： Military vehicles

来源：评论

学校读者我要写书评

暂无评论

Energy efficient mapping and voltage islanding for regular NoC under design constraints

引用

International Journal of High Performance Systems Architecture 2010年第3-4期2卷 132-144页

作者： Ghosh, Pavel Sen, Arunabha Computer Science Program School of Computing Informatics and Decision Systems Engineering Arizona State University Tempe AZ 85281 United States

Computational energy consumption of the processing elements (PEs) of a NoC can be significantly reduced by scaling down their voltage levels. This creates clusters of adjacent PEs operating at the same voltage level, known as voltage islands. Excessive number of voltage islands is undesirable from the physical design perspective and due to the overhead of level shifter energy consumption between adjacent voltage islands. Considering these issues during mapping of the PEs to the NoC routers, can potentially lead to acceptable solutions with reduced overall energy consumption. In this paper, we formulate the mapping problem as an optimisation problem. We present both optimal solution, obtained by solving a mixed integer linear program (MILP), and heuristic solution based on random greedy selection. Experimental results using benchmark and real applications show that the heuristic finds near-optimal solution in almost all cases in a very small fraction of the time required to achieve the optimal solution. Copyright © 2010 Inderscience Enterprises Ltd.

关键词： Network-on-chip

来源：评论

学校读者我要写书评

暂无评论

On challenges of robot assisted radiotherapy for lung tumors

On challenges of robot assisted radiotherapy for lung tumors

引用

IEEE International Conference on robotics and Biomimetics

作者： Lei Ma Christian Herrmann Klaus Schilling School of Electrical Engineering Southwest Jiaotong University Chengdu China Department of Computer Science VII: Robotics and Telematics University of Würzburg Wurzburg Germany

This paper is concerned with recent development in robot assisted radiotherapy for lung tumors. The paper first analyzes technical challenges regarding tumor position determination and prediction, by invasive and non-invasive methods, correlation models of the tumor motion and the respiratory signals, as well as modeling and control of the robot manipulator. Several currently available solutions and concepts are then briefly introduced. Emphasis is placed on the ATTS (adaptive tumor tracking system) system developed at the University of Würzburg. Within the ATTS, information of the tumor motion is used to control a robotic treatment couch HexaPOD, which moves in six degrees of freedom and maintains the tumor in a certain fixed spatial position. With this new technology it is possible to avoid gating during the radiotherapy as well as active breathing control, such that duration and cost of the therapy as well as trauma of the patient can be reduced. The tumor position is obtained by data fusion from two sensing system. Correlation methods for data fusion were extensively investigated and a prediction model for tumor motion is found that can forecast the tumor position for up to one respiratory period. Modeling of the HexaPOD treatment couch is addressed. The most suitable model is found to be a low-order linear dynamic equation together with a saturation component. Three different control methods and comparative test results are then presented to show feasibility of the proposed model and control schemes.

关键词： Tumors Robots Adaptation model Predictive models Tracking Cameras Data models

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：