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Precision Time Protocol (PTP) is a high precision time synchronization protocol designed to run over a local area network. PTP, often referred to as 1588, is defined by the IEEE Standard 1588™-2008. The protocol theoretically allows synchronization at the nanosecond level. In this project we study the performance of the protocol in an environment where multiple 1588 devices are connected via a network...
This paper addresses issues with time synchronization using the IEEE 1588-2008 for distributed measurement and control systems. A practical implementation of the transparent clock is presented with the overall system architecture and detailed operation of each building block. To verify the submicrosecond accuracy using the implemented devices, an experimental setup that was analogous to a practical...
Based on the IEEE 1588, a Prediction-based Fairness Control (PFC) algorithm is proposed. It improves the real-time performance of star topology industry control Ethernet. The channel load is detected by delay measurement. Data flow is regulated according to the whole channel load. The main functions of this algorithm are as follows: controlled nodes are controlled to guarantee the communications of...
In the recent past we have seen open standards based data acquisition and telemetry systems supplant proprietary systems. Asynchronous Transfer Mode (ATM) was a great choice for sonar and related synchronous sampling systems as the network was built on the concept of a synchronous backbone from which system timing could be derived. Unfortunately for all but the largest of backbones, ATM has been replaced...
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