检索结果-内蒙古大学图书馆

IEEE International Conference on robotics and Automation (ICRA)

作者： K.-F. Bohringer B.R. Donald R. Mihailovich N.C. MacDonald Robotics & Vision Laboratory Department of Computer Science Cornell University Ithaca NY USA School of Electrical Engineering and The National Nanofabrication Facility Cornell University Ithaca NY USA

This paper investigates manipulation tasks with arrays of microelectromechanical structures (MEMS). We develop a geometric model for the mechanics of microactuators and a theory of sensorless, parallel manipulation, and we describe efficient algorithms for their evaluation. The theory of limit surfaces offers a purely geometric characterization of microscale contacts between actuator and moving object, which can be used to efficiently predict the motion of the object on an actuator array. It is shown how simple actuator control strategies can be used to uniquely align a part up to symmetry without sensor feedback. This theory is applicable to a wide range of microactuator arrays. Our actuators are oscillating structures of single-crystal silicon fabricated in a IC-compatible process. Calculations show that these actuators are strong enough to levitate and move, for example, a piece of paper.< >

关键词： Sensor arrays Actuators Microactuators Fabrication Micromechanical devices Laboratories Solid modeling Sensorless control Nanofabrication Robots

来源：评论

学校读者我要写书评

暂无评论

Sensing odour trails for mobile robot navigation

Sensing odour trails for mobile robot navigation

引用

IEEE International Conference on robotics and Automation (ICRA)

作者： A. Russell D. Thiel A. Mackay-Sim Intelligent Robotics Research Centre Department of Electrical & Computer Systems Engineering Monash University Clayton VIC Australia School of Microelectronic Engineering Griffith University-Nathan Brisbane QLD Australia School of Science Griffith University-Nathan Brisbane QLD Australia

By monitoring or following trails layed on the ground a mobile robot can perform several useful navigation tasks. An example would be following a trail layed on an outward journey in order to later find the way back to the starting point. This paper describes the latest stage in the development of a robot navigation system based on laying down and detecting trails of volatile chemicals. Previously a prototype olfactory sensor was developed which showed the feasibility of having a mobile robot follow an odour trail on the floor. This prototype sensor has now been improved by managing airflow in the vicinity of the sensor. This has decreased the sensor response time and improved rejection of spurious odour signals carried by airflow in the room. A simple and effective applicator has also been developed for laying odour trails.< >

关键词： Mobile robots Navigation Robot sensing systems Chemical sensors Olfactory intelligent robots Prototypes Insects Microelectronics Systems engineering and theory

来源：评论

学校读者我要写书评

暂无评论

Conductance transient characterization of reactive ion etched HEMT gate recesses

Conductance transient characterization of reactive ion etche...

引用

Indium Phosphide and Related Materials Conference

作者： J.E. Schramm M. Mondry E.L. Hu J.L. Merz Dept. of Electr. & Comput. Eng. California Univ. Santa Barbara CA USA Department of Electrical and Computer Engineering Center for Robotics and Intelligent Systems University of California Santa Barbara CA USA University of California Santa Barbara Santa Barbara CA US

A simple, novel technique was devised to examine the effects of RIE self-bias voltage, plasma exposure time, and oxygen plasma clean conditions on the AlInAs Schottky contact layer of an InP-based HEMT.

关键词： HEMTs Voltage Plasma applications Dry etching Plasma measurements electrical resistance measurement Lighting Plasma devices Polymers Testing

来源：评论

学校读者我要写书评

暂无评论

A REAL-TIME IMPLEMENTATION OF STRUCTURE ESTIMATION USING IMAGE STREAMS 6

A REAL-TIME IMPLEMENTATION OF STRUCTURE ESTIMATION USING IMA...

引用

CONF ON SENSOR FUSION 6

作者： DALMIA, AK TRIVEDI, MM Computer Vision and Robotics Research Laboratory Electrical and Computer Engineering Department University of Tennessee Knoxville 37996-2100 TN United States

ISBN: (纸本)0819413240

The computation of 3-D structure from motion using a monocular sequence of images in the paradigm of active vision is investigated in this paper. Robotic tasks such as navigation, manipulation, and object recognition all require 3-D description of scene. The 3-D description for these tasks varies in resolution, accuracy, robustness, range, and time. In developing such a system, it must have the capability to actively control the imaging parameters so that a 3-D description sufficient enough for that task is generated. The objective of this paper is to investigate a strategy suitable for fast and active 3-D structure estimation. First, the process of 3-D structure estimation in the paradigm of active vision is discussed. Second, implication of image streams in 3-D structure computation is analyzed. The three approaches to structure from motion, feature based, optical flow based, and spatial and temporal gradient based, are reviewed for their efficacy in fast and active estimation of 3-D structure. Finally, a pipeline based implementation of a spatial and temporal gradient based approach is presented alongwith detailed experimental analysis. © 1993 SPIE. All rights reserved.

关键词： Object recognition

来源：评论

学校读者我要写书评

暂无评论

AN ACTIVE VISION SYSTEM FOR DEPTH EXTRACTION USING MULTI-PRIMITIVE HIERARCHICAL STEREO ANALYSIS AND MULTIPLE DEPTH CUES

AN ACTIVE VISION SYSTEM FOR DEPTH EXTRACTION USING MULTI-PRI...

引用

CONF ON SENSOR FUSION AND AEROSPACE APPLICATIONS

作者： MARAPANE, SB TRIVEDI, MM Computer Vision and Robotics Research Laboratory Electrical and Computer Engineering Department University of Tennessee Knoxville 37996-2100 TN United States

ISBN: (纸本)0819411922

Binocular stereo, vergence stereo, and depth from focus have been extensively studied in isolation in the past for extraction of depth. These passive approaches have there oivn strengths and limitations. All these cues differ in their input image requirements, computational requirements, and the quality and nature of results they provide. None of them by themselves is sufficient to reliably extract depth information from a wide variety of scenes. It is evident an integrated system ivhich employs multiple cues and exploits their strengths would be most critical for developing a robust depth extraction system. Active vision paradigm alloivs us to develop such a system where various depth cues cooperate to derive the 3-D structure of the scene. In this, the integration would be accomplished by active intelligent control of the acquisition processes tightly coupled to the analysis of image data. One of the uniqueness of our integration approach is that while previous approaches have used a single primitive stereo system, typically edgel based, we have chosen a novel multi-primitive hierarchical(MPH) system. In MPH model, stereo analysis is performed in multiple stages, incorporating multiple primitives, utilizing a hierarchical control strategy. The MPH stereo system consists of three integrated subsystems: region based analysis module;linear edge segment based analysis module;and edgel based stereo analysis module. The use of regions and edge segments in addition to the edgel based analysis add a new dimension to the extraction of depth from stereo images. In fact, even in an integrated multiple cue based system, an edgel based binocular stereo approach alone is insufficient to process a variety of scenes. The reliance of different primitives at various levels makes MPH stereo analysis ideal for use in an integrated multiple cue based depth extraction system. © 1993 SPIE. All rights reserved.

关键词： Extraction

来源：评论

学校读者我要写书评

暂无评论

PERFORMANCE ANALYSIS OF A GATEWAY CONNECTING THE CEBUS TO THE ISDN

引用

IEEE TRANSACTIONS ON CONSUMER ELECTRONICS 1993年第4期39卷 870-877页

作者： MANIKOPOULOS, CN YANG, JS Intelligent Systems Laboratory Department of Electrical and Computer Engineering New Jersey Institute of Technology Newark NJ USA HiTEL Database Division Data Communications Business Group Korea Telecom Seoul South Korea

The performance of a geteway which connects the CEBus to the ISDN has been investigated. The gateway handles three priority class messages for either direction. Message and channel throughputs and packet and message delays have been studied in terms of the offered load for intra-network traffic in the CEBus and internetwork traffic from the CEBus to the ISDN through the gateway. It has been found that delay for internetwork traffic for any priority level is much higher than that for intra-network traffic. In light traffic load, the delay for the ISDN to the CEBus direction is lower than that for the opposite direction. This was seen to reverse in heavy loads. In addition, significant decline of throughput was found, under the condition of large propagation delay, for all three priorities of internetwork traffic. Under favorable conditions, i.e., for low or zero propagation delay, packet length in the range of 300 to 500 bits, and light traffic, less than 70% of offered load (including inter-network traffic via the gateway), the CEBus-Gateway-ISDN system performs satisfactorily.

关键词： Performance analysis Joining processes ISDN Telecommunication traffic Throughput Propagation delay Communication system control intelligent systems Laboratories Performance evaluation

来源：评论

学校读者我要写书评

暂无评论

PERFORMANCE EVALUATION OF A 3 PRIORITY CEBUS ROUTER

引用

IEEE TRANSACTIONS ON CONSUMER ELECTRONICS 1993年第2期39卷 107-114页

作者： YANG, JS MANIKOPOULOS, CN HiTEL Data Base Division Data Communications Business Group Korea Telecom Seoul South Korea Intelligent Systems Laboratory Department of Electrical and Computer Engineering New Jersey Institute of Technology Newark NJ USA

A performance evaluation has been carried out by simulation experiments for a three priority CEBus router handling traffic between the PL and TP media. The message and channel throughput, and message and packet delay have been studied for a wide range of offered traffic loads. The router has behaved well, according to message priority. The inter-network traffic has showed larger delay than intra-network traffic.

关键词： Throughput Telecommunication traffic Access protocols Bandwidth Open systems Power system interconnection Delay effects intelligent systems Laboratories Consumer electronics

来源：评论

学校读者我要写书评

暂无评论

A modular neural network architecture for pattern classification 3

A modular neural network architecture for pattern classifica...

引用

1993 3rd IEEE-SP Workshop on Neural Networks for Signal Processing, NNSP 1993

作者： Elsherif, H. Hambaba, M. Intelligent Systems Laboratory Electrical Engineering and Computer Science Department Stevens Institute of Technology HobokenNJ07030 United States

ISBN: (纸本)0780309286

A modular neural network architecture is proposed to classify binary and continuous patterns. This system consists of a supervised feedforward backpropagation network and an unsupervised self-organization map network. The supervised feedforward (basic) network is trained until a saturation error level occurs. Simultaneously, the unsupervised self-organization map (control) network fluids the mapping features for the given input/output patterns. The resultant features are used by Gaussian and linear functions to adjust the hidden and the output weights of the basic network and to classify the given patterns. © 1993 IEEE.

关键词： Network architecture

来源：评论

学校读者我要写书评

暂无评论

Vehicle-based route planning in advanced traveler information systems

Vehicle-based route planning in advanced traveler informatio...

引用

1993 intelligent Vehicles Symposium, IV 1993

作者： Nelson, P.C. Lain, C. Dillenburg, J. Intelligent Vehicle Highway Systems Laboratory Department of Electrical Engineering and Computer Science University of Illinois at Chicago ChicagoIL60680 United States

ISBN: (纸本)0780313704

A primary function of most advanced traveler information systems involves the ability to plan optimal routes. Although the route planning ability of ATIS systems could be facilitated using centralized computing resources, most ATIS systems currently in development use in-vehicle computational resources. The primary advantage of this type of approach is fault tolerance;vehicles can continue to plan routes even in the absence of a centralized computing center. However, there are significant challenges associated with planning routes using in-vehicle electronics. These challenges are a result of trying to keep the cost of the invehicle electronics to a reasonable level. Thus, the route planning algorithm must be both space and time efficient. Test results comparing various heuristic search algorithms to each other and to traditional route planning algorithms are presented. Among the heuristic search algorithms tested are two memory limited algorithms, MA∗ and MREC, which are particularly suited for this problem domain. The test results show that heuristic search algorithms are more efficient route planners than shortest path algorithms. © 1993 IEEE.

关键词： Vehicles

来源：评论

学校读者我要写书评

暂无评论

SAVIC: A SIMULATION, VISUALIZATION AND INTERACTIVE CONTROL ENVIRONMENT FOR MOBILE ROBOTS

引用

International Journal of Pattern Recognition and Artificial Intelligence 1993年第1期7卷 123-144页

作者： CHUXIN CHEN MOHAN M. TRIVEDI Computer Vision and Robotics Research Laboratory Department of Electrical and Computer Engineering The University of Tennessee Knoxville TN 37996–2100 USA

A Simulation, Animation, Visualization and Interactive Control (SAVIC) environment has been developed for the design and operation of an integrated robotic manipulator system. This unique system possesses the abilities for (1) multi-sensor simulation, (2) kinematics and locomotion animation, (3) dynamic motion and manipulation animation, (4) transformation between real and virtual modes within the same graphics system, (5) ease in exchanging software modules and hardware devices between real and virtual world operations, and (6) interfacing with a real robotic system. This research is focused on enhancing the overall productivity of an integrated human-robot system. This paper describes a working system and illustrates the concepts by presenting the simulation, animation and control methodologies for a unique mobile robot with articulated tracks, a manipulator, and sensory modules.

关键词： Sensor-based robotics intelligent human-machine interface real-time robot simulation sensor simulation visualization virtual reality interactive control

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：