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A collection of papers from the COOP 2002 conference. This conference was mainly devoted to the following issues: the gap between virtual and ""material"" artefacts in human collaboration; collaboration among mobile actors; the WWW as a platform for co-operative systems; and more.

System design

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"Active Disturbance Rejection Control has been studied since the 19th century. The main idea is to simplify the plant description so as to group all disturbances, foreign and internal, and all unknown, or ignored, quantities and expressions into a single disturbance term. We proceed to estimate the effects of this disturbance in some accurate manner and devise the means to cancel its effects using the gathered estimate as part of the feedback control action. Active Disturbance Rejection Control of Dynamic Systems describes the linear control of uncertain nonlinear systems. The net result is a practical controller design approach that is simple, surprisingly robust, while guaranteeing the convergence to small neighborhoods of desired equilibria or to tracking errors that are as close to zero as desired. The methodology differs from current robust feedback controllers characterized either by complex matrix manipulations and parameter adaption schemes or, in other cases, by induced high-frequency noises through the classical "chattering" phenomenon. The approach contains many of the cornerstones, or philosophical features, of Model-Free Control and ADRC while exploiting flatness and GPI control in an efficient manner for linear, nonlinear, monovariable and multivariable systems including those exhibiting inputs delays. This book contains successful experimental laboratory case studies of diverse engineering nature, especially mechanical, electro-mechanical, robotics, mobile robotics, and power electronics systems problems." -- back cover.

System design.

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Control System Design Guide, 3E will help engineers to apply control theory to practical systems using their PC. This book provides an intuitive approach to controls, avoiding unnecessary mathematics and emphasizing key concepts with more than a dozen control system models. Whether readers are just starting to use controllers or have years of experience, this book will help them improve their machines and processes.* Teaches controls with an intuitive approach, avoiding unnecessary mathematics.* Key topics are demonstrated with realistic models of control systems.* All models w

Automatic control. --- System design.

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Artificial intelligence. --- System design.

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Design Methods for Reactive Systems describes methods and techniques for the design of software systems-particularly reactive software systems that engage in stimulus-response behavior. Such systems, which include information systems, workflow management systems, systems for e-commerce, production control systems, and embedded software, increasingly embody design aspects previously considered alone-such as complex information processing, non-trivial behavior, and communication between different components-aspects traditionally treated separately by classic software design methodologies. But, a

Computer software --- System design. --- Development.