Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Modeling and Design of Fault-Tolerant and Self-Adaptive Reconfigurable Networked Embedded Systems | Hindawi Publishing Corporation EURASIP Journal on Embedded Systems Volume 2006 Article ID 42168 Pages 1-15 DOI ES 2006 42168 Modeling and Design of Fault-Tolerant and Self-Adaptive Reconfigurable Networked Embedded Systems Thilo Streichert Dirk Koch Christian Haubelt and Jurgen Teich Department of Computer Science 12 University of Erlangen-Nuremberg Am Weichselgarten 3 91058 Erlangen Germany Received 15 December 2005 Accepted 13 April 2006 Automotive avionic or body-area networks are systems that consist of several communicating control units specialized for certain purposes. Typically different constraints regarding fault tolerance availability and also flexibility are imposed on these systems. In this article we will present a novel framework for increasing fault tolerance and flexibility by solving the problem of hard-ware software codesign online. Based on field-programmable gate arrays FPGAs in combination with CPUs we allow migrating tasks implemented in hardware or software from one node to another. Moreover if not enough hardware software resources are available the migration of functionality from hardware to software or vice versa is provided. Supporting such flexibility through services integrated in a distributed operating system for networked embedded systems is a substantial step towards self-adaptive systems. Beside the formal definition of methods and concepts we describe in detail a first implementation of a reconfigurable networked embedded system running automotive applications. Copyright 2006 Thilo Streichert et al. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. 1. INTRODUCTION Nowadays networked embedded systems consist of several control units typically connected via a shared communication medium and each control unit is specialized to execute certain functionality. Since .
