저비용 네트워크 기반 임베디드 시스템을 위한 시간동기 기술
Fault-tolerant clock synchronization for low-cost networked embedded systems
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Abstract
Networked embedded systems using the smart device and fieldbus technologies are now found in many industrial fieldsrest of the system can cause many difficulties in the design and implementation of a networked system. To provide anetworked system with a global reference time, the problem of clock synchronization has been intensively studied overthe decades. However, many of the existing solutions, which are mainly developed for large scale distributed computersystems, cannot be directly applied to embedded systems. This paper presents a fault-tolerant clock synchronizationtechnique that can be used for a low-cost embedded system using a CAN bus. The effectiveness of the proposed methodis demonstrated with a set of microcontrolers and DC motor-based actuators.
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