Showing papers on "Mechatronics published in 1992"

Command Control for Many-Robot Systems

Abstract: Rapidly evolving sensor, effector and processing technologies, including micromechanical fabrication techniques, will soon make possible the development of very inexpensive autonomous mobile devices with adequate processing but fairly limited sensor capabilities. One goal which has been proposed is to employ large numbers (more than 100) of these simple robots to achieve real-world military mission goals in the ground, air, and underwater environments, using sensor-based reactive planners to realize desired emergent collective group behaviors. One key prerequisite to realizing this goal is the capability to command and control the system of robots in terms of meaningful mission-oriented system-level parameters. A commander requires an understanding of a system's capabilities, doctrine for employing it, and measures of effectiveness to assess its performance once deployed. It is thus necessary to relate system (ensemble) functionality and performance to the behaviors realized by the individual autonomous elements. This paper describes a program of analysis, modeling, algorithm development, and simulation which has been undertaken to develop, refine, and validate this basic approach to real-world problem solving. The initial thrust has been to develop generic behaviors, such as blanket, barrier, and sweep coverage, and various deployment and recovery modes, which can address a broad spectrum of generic applications such as mine deployment, minesweeping, surveillance, sentry duty, maintenance inspection, ship hull cleaning, and communications relaying. Initial simulation results are presented. 1.0 INTRODUCTION The critical sensor, effector, and processing technologies that are prerequisite to the development of the military mobile robots of the 21st century are evolving rapidly. Moreover, while major thrusts in the development of military mobile robots have been undertaken in the areas of Unmanned Ground Vehicles (UGVs), Unmanned Air Vehicles (UAVs), and Unmanned Underwater Vehicles (UUVs), continuing developments in solid-state sensor and effector technologies suggest that unexploited opportunities exist at the "lower end" of the spectrum of robotic vehicle functionality and performance [1, 2]. In fact, the emerging field of "micromachines" (also termed "microdynamics", "mechatronics", or "microelectromechanical systems") was selected

Engineering design and mechatronics - the Schemebuilder Project.

Abstract: The paper describes the development of a software design aid for use at the conceptual stage of engineering design. It is intended for use in the design of mechatronic products but has wider potential uses. Early approaches were based on function structures and tables of options and the system that evolved allows the assembly of schemes linked by matching their input and output ports. A database of components is provided which can be accessed via different indexes and the designer can easily create and compare alternative schemes at the concept stage. A bond graph approach is used to define the interconnections between components. This allows correct port matching but also provides for future development such as constraint propagation through the design and links to simulation tools.

Mechatronic sensors in integrated vehicle architecture

Abstract: At present, electronic controls and systems are in the process of becoming essential and integral parts of our vehicles whereas they were previously replacements for corresponding mechanical systems predominantly separately acting or fulfilling add-on functions. From this viewpoint, the electronic systems in the vehicle will be interconnected with each other to a much greater degree than was previously the case; for this reason, they must also be reclassified and subdivided. Accordingly, electronic signal-processing components, for example, which were previously located in central control units, will be moved to the periphery where they are mechanically and electrically integrated with the sensor or actuator directly at the point at which they are actually required (mechatronics). The varied advantages of such sensors which are also capable of digital communication by means of new connection systems (bus systems) can be seen in the concrete example of an ‘intelligent’ short-circuit-ring displacement sensor. The accuracy of this sensor can be increased considerably by simultaneously simplifying its design; the highly accurate measured signal can be transmitted in a digital form.

Mechatronics and the Imitation of Nature

Abstract: The author provides a definition of mechatronics. He explains how mechanical engineering design must change to take full advantage of developments in microelectronics and illustrates this by three structural examples. He goes on to show by further examples how mechatronics strengthens an underlying trend in engineering he calls ‘the imitation of nature’ with products which tend increasingly to resemble living creatures.

Structure and parameter optimization of an active adsorber for decentralized vibration control

Abstract: A novel mechatronics concept for decentralized vibration control by means of an active absorber is presented. In order to achieve a high dynamic accuracy without spill-over effects an integrated model-based overall optimization both of the hardware and software parameters and of the local placement of the absorber onto the most sensitive points of the mechanical structure is required. Suitable methods both for the experimental model identification and for the structural and parameter optimization are presented. The performance of the mechatronics concept applied to a SCARA type robot is demonstrated by experimental and simulation results. >

Object-Oriented Engineering: Building Engineering Systems Using Smalltalk-80

Abstract: Object-Oriented Engineering: Building Engineering Systems Usig Smalltalk understanding and use of object-oriented methodologies for engineering problem solving with a specific Introduction to ObjectOriented Design for Smalltalk, English, Book, Illustrated edition: Object-oriented engineering: building engineering systems using smalltalk / John R. Bourne. Bourne, John R. (John .15 Jan 19 sec Uploaded by A. Eugen Download Object Oriented Engineering Building Engineering Systems Usig Smalltalk 23 May 7 sec [PDF] Object-Oriented Engineering: Building Engineering Systems Usig Smalltalk (The.Object-Oriented Engineering: Building Engineering Systems Using Smalltalk by John R. Bourne at loveinamasonjar.com ISBN X ISBN David L. Spooner, An object-oriented data management system for Eirik A. M. Vefsnmo, “DASOM”—a software engineering tool for Wilf R. LaLonde, Mark Van Gulik, Building a backtracking facility in smalltalk.Object-Oriented Engineering: Building Engineering Systems Using Smalltalk Author: John R. Bourne. Publication: Cover Image. · Book. Object-Oriented.Engineering: Building Engineering Systems Usig Smalltalk (The Aksen to the understanding and use of object-oriented methodologies for engineering.Building Engineering Systems Usig Smalltalk the understanding and use of object-oriented methodologies for engineering problem solving with a specific.$ Free shipping. Object-Oriented Engineering: Building Engineering Systems Using. . Introduction to Object-Oriented Design for Smalltalk The Tools.See all books authored by John R. Bourne, including Object-Oriented Engineering: Building Engineering Systems Usig Smalltalk (The Aksen Associates.Object Oriented Engineering Building Engineering Systems Usig Smalltalk 80 by Author. Read and Download Online Unlimited eBooks, PDF Book, Audio Book.Results 1 9 of 9 Object-oriented Engineering: Building Engineering. Systems Using Smalltalk by John R Bourne. DMOZ Computers: Programming.Johannes Brauer: Programming Smalltalk / Object-Orientation from the Engineering: Building Engineering Systems Using SmalltalkThe Xerox Research Learning Group, The Smalltalk System, Byte, Aug . Collaborative prioritization of architectural concerns, Journal of Systems and Biblio of object-oriented system development, ACM SIGSOFT Software Engineering . We describe the use of object-oriented programming (OOP) in the design.Design-kit: An object-oriented environment for process engineering NETL: A System for Representing and using Real-World Knowledge, M.I.T. Press, Smalltalk The Language and its Implementation, Addison-Wesley, Reading, Mass (). 11 Building Expert System, Addison-Wesley, Reading, Mass ( ).

Mechatronics Curriculum In The Synthesis Coalition

Abstract: Mechatronics curricula are being established at several universities associated with the Synthesis Coalition, a National Science Foundation project. aimed at improving engineering education and increasing the number, quality and diversity of engineering graduates. The programs focus on real time computation and control of mechanical systems such as DC motors, stepping motors, thermal systems, and manufacturing machinery.

Parallel algorithms for 2-D boundary value systems

Abstract: The objective of this thesis is to develop and investigate efficient, direct, and parallelizable algorithms for 2-D boundary value systems, particularly in the context of 2-D digital filtering. FIR filters appear to be the preferred form of implementation in 2-D signal and image processing applications not only because they have desirable attributes like stability and efficient solutions, but also because the properties of 2-D IIR implementations are not well known. In this thesis we provide a framework for efficiently implementing 2-D IIR filters specified by a 2-1) linear difference equation constrained by boundary conditions. A direct solution is developed whose performance is comparable to the nested dissection algorithm, and whose approximate solution is is more computationally efficient than nested dissection for filter systems identical to strictly diagonally dominant systems of equations. Thesis Supervisor: Alan S. Willsky Title: Professor

Integrative engineering program for modern converging technologies

Abstract: The Chinese University of Hong Kong aims to produce a new breed of engineers who can adapt to the rapid development in high technology, particularly the modern converging technologies, by introducing an integrative engineering program which centers around electronics, computer science, information technology, and computer-aided engineering. The program was introduced in August 1988 and entered its second year with a first-year intake of 145. It is expected that the first-year intake will be doubled by 1994, and it is planned that in the near future, the integrative engineering program will include other disciplines, such as systems (manufacturing) engineering and materials engineering. >