检索结果-内蒙古大学图书馆

Sensor system and powerful computer system for controlling a microrobot-based micromanipulation station

JOURNAL OF MICROMECHANICS AND MICROENGINEERING 1997年第3期7卷 256-258页

作者： Fischer, T Santa, K Fatikow, S University of Karlsruhe Department of Computer Science Institute for Real-Time Computer Systems and Robotics Kaiserstr.12/Geb. 40.28 D-76128 Karlsruhe Germany Presented on 22 October 1996 accepted for publication 8 April 1997

Mobile microrobots, which are capable of performing microscopic motions, have become a subject of great interest all over the world, They have the potential to be used for a variety of applications: in industry for assembly of microsystems or for the testing of silicon chips;in medicine for handling biological cells, etc. A new model of an automated micromanipulation station, which includes piezoelectric microrobots is now being built by an interdisciplinary research group at the University of Karlsruhe, Germany, This paper describes a sensor system and a powerful tailorable computer for controlling the micromanipulation station.

关键词： Manipulators

来源：评论

学校读者我要写书评

暂无评论

Assembly sequence planning for manufacturing by microrobots

Assembly sequence planning for manufacturing by microrobots

引用

IEEE International Symposium on Assembly and Manufacturing (ISAM)

作者： S. Fatikow R. Mounassypov Institute for Real-Time Computer Systems and Robotics University of Karlsruhe Karlsruhe Germany Department of Technical Cybernetics Ufa State Aviation Technical University Bashkortostan Russia

The authors present a microassembly system model based on geometric reasoning. Its components, which include an X-Y positioning table with a glass plate fixed on top of it, operating microrobots on the plate, and a CCD-camera, are discussed in detail. Feasibility criteria for the generation of possible assembly sequences and optimisation criteria for selecting the best assembly plan, which reflect the specific features of microassembly, are suggested. For both planning steps, algorithms for an automatic procedure have been developed and implemented. An important advantage of te suggested bottom-up search procedure is that the assembly plan is determined at each step of the algorithm, so that the searching of all feasible sequences and the selection of the best one are integrated into one automated planning procedure. This allows one to replan the assembly process during plan execution, starting from the current process state and without exploring the space of all possible assembly plans. For a multirobot system, a method for decomposition of an assembly plan and its implementation is suggested.

关键词： Manufacturing Robotic assembly Microassembly Service robots robotics and automation Microscopy Glass Sensor systems Robot sensing systems Intelligent robots

来源：评论

学校读者我要写书评

暂无评论

Flexible piezoelectric micromanipulation robots for a microassembly desktop station

Flexible piezoelectric micromanipulation robots for a microa...

引用

International Conference on Advanced robotics (ICAR)

作者： S. Fatikow J. Zollner K. Santa R. Zollner A. Haag Institute for Real-Time Computer Systems and Robotics University of Karlsruhe Karlsruhe Germany Karlsruher Institut fur Technologie - Campus Nord Eggenstein-Leopoldshafen Baden-WÃ¼rttemberg DE

The design of a microassembly desktop station is a major challenge for microsystem technology. This paper presents several piezoelectric micromanipulation robots, which have been developed to be used in a microassembly station. These robots are of different design and use different actuation principles so that each robot serves for a specific task. They are capable of travelling over long distances and of manipulating in the range of a few nanometers. Several robots of this kind can be accommodated in a microassembly station and can cooperate and perform microassembly tasks as a team. They can also be used for other operations such as online testing of microelectronic chips or manipulating biological cells.

关键词： Microassembly Voltage real time systems Logic testing Microelectronics Piezoelectric actuators Robot control Multirobot systems Robustness Production

来源：评论

学校读者我要写书评

暂无评论

The HIMAC Project: Hierarchical Management and Control in Manufacturing systems

引用

IFAC Proceedings Volumes 1997年第1期30卷 309-314页

作者： E. Canuto M. Christodoulou c. Chu F. Donati V. Gaganis B. janusz J.M. Proth W. Reithofer M. Vallauri Dipartimento di Automatica e Informatica. Politecnico di Torino. Corso Duca degli Abruzzi 24 1-10129 Torino. Italy Dept. of Electrical & Computer Engineering. Laboratory of Automation Technical University of Crete. GR-73100 Chania (Crete). Greece INRIA Lorraine Technopôle Metz 2000. Rue Marconi 4. F-57070 Metz. France Institute for Real-time Computer Systems and Robotics. University of Karlsruhe Kaiserstrasse 12 D-76128 Karlsruhe. Germany

The paper presents the major features of the ESPRIT Basic Research HIMAC, proposed to the EC after a thorough investigation of the state of the art of manufacturing systems control. HIMAC has followed a new approach, by developing a specific mathematIcs, the Manufactunng Algebra (MA), for modelling and controlling the production processes of discrete manufacturing systems. As a key feature, the MA models can be bottom-up aggregated starting from the very detailed levels used in simulation, thus making poSSIble a coherent model hierarchy at the base of the design and realization of Hierarchical control strategies and architectures. The formulation of the original mathematical approach and its validation criteria are outlined in the paper. For a deeper understanding, the mterested reader can take advantage of the list of references given at the end.

关键词： Manufacturing systems Production control Hierarchical control

来源：评论

学校读者我要写书评

暂无评论

Dynamic task mapping in a real-time controller for distributed cooperating robot systems

引用

CONTROL ENGINEERING PRACTICE 1996年第6期4卷 831-838页

作者： Lueth, T Laengle, T Heinzman, J Institutef/or Real-Time Computer Systems and Robotics (IPR) University of Karlsruhe D-76128 Karlsruhe Germany

An intelligent control architecture for autonomous robot systems must be modular, scaleable, extendible, and adaptable to the available capacity of computer control systems. To support these properties, the concept of an adaptive control structure, ACS, is presented in this paper. Experiments with a small autonomous assembly robot show the successful use of ACS.

关键词： robot control distributed control distributed computer control systems adaptive control discrete-event systems

来源：评论

学校读者我要写书评

暂无评论

Interactive control and environment modelling for a mobile robot based on multisensor perceptions

引用

robotics AND AUTONOMOUS systems 1996年第3期18卷 301-310页

作者： Lin, IS Wallner, F Dillmann, R Institute for Real-Time Computer Systems and Robotics University of Karlsruhe D-76128 Karlsruhe Germany

This paper presents an advanced telerobotic control system for a mobile robot with multisensor feedback. A telecontrol concept for various degrees of cooperation between a human operator and a mobile robot is described. With multisensor on-board the robot at the remote site can adjust its path while continuously accepting commands from the human operator. Interactive modelling that allows the modelling of an unknown environment and makes landmarks known to the robot is introduced. A graphical user interface and a 3-D animation system are important elements in the teleoperation, they are integrated in this system to help the operator by task analysis, off-line teaching and on-line monitoring. Experiments performed with the mobile robot PRIAMOS are discussed.

关键词： mobile robot telerobotics multisensor man-machine systems

来源：评论

学校读者我要写书评

暂无评论

Stereo grouping for model-based recognition

Stereo grouping for model-based recognition

引用

13th International Conference on Pattern Recognition, ICPR 1996

作者： Ude, Aleš Ekre, Tor Eivind Institute for Real-Time Computer Systems and Robotics University of Karlsruhe Kaiserstr. 12 76128 Karlsruhe Germany

ISBN: (纸本)081867282X

A strategy for the fusion of information from a stereo image pair for model-based object recognition is discussed. Our scheme combines a new method for feature grouping with a region-based stereo matching and a hypothesize-and-verify paradigm. The grouping method developed is based on a graph theoretical algorithm. It exploits prior knowledge to find the groups of image features which are likely to come from a sought model(s). The Bayesian classification is used to deal with the resulting hypotheses. A mechanism for a dynamic threshold modification is incorporated into the system to enable the grouping at different resolutions. Unlike classical techniques for object recognition from stereo, our strategy does not depend on a data driven computation of a depth map. We argue that a propulsive reconstruction of 3D information can be more efficient and robust. © 1996 IEEE.

关键词： Object recognition

来源：评论

学校读者我要写书评

暂无评论

Programming by demonstration: A machine learning approach to support skill acquision for robots 3rd

引用

3rd International Conference on Artificial Intelligence and Symbolic Mathematical Computation, AISMC 1996

作者： Dillmann, R. Friedrich, H. University of Karlsruhe Institute for Real-Time Computer Systems and Robotics Kaiserstr. 12 KarlsruheD-76128 Germany

ISBN: (纸本)3540617329

Programming by Demonstration (PbD) is a programming method that allows to add new functionalities to a system by simply showing the desired task or skill in form of few examples. In the domain of robotics this paradigm offers the potential to reduce the complexity of robot task programming and to make programming more "natural". In case of programming an assembly task PbD allows with the help of a video or a laser camera and a data glove the automatic generation the necessary robot program for the assembly task. In addition, the demonstration of the task with few different assembly situations and strategies may achieve a generalized assembly function for all possible variants of the class. In order to realize such a PbD system at least two major problems have to be solved. First, the sensor data trace of a demonstration has to be interpreted and transformed into a high-level situation-action representation. This task is not yet well understood nor solved in general. Second, if a generalization is required, induction algorithms must be applied to the sensor data trace, to find the most general user-intended robot function from only few examples. In this paper mainly the second problem is focused. The described experimental PbD environment consists of an industrial robot, a 6D space mouse used as input device, and some sensors. Various data can be recorded during a demonstration for further processing in the PbD system implemented on a workstation. The objective is to exploit the possibilities of integrating learning and clustering algorithms for automated robot programming. In particular it is investigated how human interaction with the PbD system as well as user-initiated dialogs can support inductive learning to acquire generalized assembly programs and skills. © Springer-Vedag Berlin Heidelberg 1996.

关键词： Demonstrations

来源：评论

学校读者我要写书评

暂无评论

Fuzzy control for mobile manipulation

Fuzzy control for mobile manipulation

引用

IEEE International Conference on robotics and Automation (ICRA)

作者： U.M. Nassal R. Junge Institute for Real-Time Computer Systems and Robotics (IPR) University of Karlsruhe Karlsruhe Germany

Increasing the flexibility of robot systems has been one of the main objectives of robotics research in recent years. There are various approaches to achieve this: increasing fault-tolerance, the development of new actuators and sensors and the use of learning techniques. But the field of operation of such smart systems is still limited to a rather small area. Mobile manipulation is another facet of increasing the flexibility of a robot system. By exploiting the mobility of a platform, the dextrous workspace of manipulators can be considerably increased. One main research topic on mobile manipulation is the decomposition of the motion of the tool-centre-point into manipulator motion and platform motion. In this paper a new online approach to this decomposition is presented which allows the consideration of complex obstacles and multiple manipulators mounted on the platform. A focus of this paper is the presentation of a fuzzy-controller that enables the robot to perform manipulation and locomotion in an integrated manner.

关键词： Fuzzy control Manipulators Control systems Mobile robots Robotic assembly Kinematics Gravity Motion planning Path planning Force control

来源：评论

学校读者我要写书评

暂无评论

THE LIQUID MODEL LOAD BALANCING METHOD

引用

Parallel Algorithms and Applications 1996年第3-4期8卷 285-307页

作者： Dominik Henrich[a] [a] Institute for Real-Time Computer Systems and Robotics Computer Science Department University of Karlsruhe Karlsruhe D Germany

Load balancing is one of the central problems that have to be solved in parallel computation. Here, the problem of distributed, dynamic load balancing for massive parallelism is addressed.A new local method, which realizes a physical analogy to equilibrating liquids in multi-dimensional tori or hypercubes, is presented. It is especially suited for communication mechanisms with low set-up to transfer ratio occurring in tightly-coupled or SIMD systems. By successive shifting single load elements to the direct neighbors, the load is automatically transferred to lightly loaded *** to former methods, the proposed Liquid model has two main advantages. First, the task of load sharing is combined with the task of load balancing, where the former has priority. This property is valuable in many applications and important for highly dynamic load distribution. Second, the Liquid model has high efficiency, Asymptotically, it needsO(D K Ldiff) load transfers to reach the balanced state in aD-dimensional torus withKprocessors per dimension and a maximum initial load difference ofLdiff. The Liquid model clearly outperforms an earlier load balancing approach, the *** a survey of related research, analytical results within a formal framework are derived. These results are validated by worst-case simulations in one- and two-dimeasional tori with up to two thousand processors.

关键词： Distributed computing parallel algorithms load sharing load balancing rings tori hypcrcubes.

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：