【摘要】 介绍了EPA(Ethernet for plant automation)标准的确定性通信调度方法,分析了EPA实时性能指标,重点研究了在网络拓扑给定的情况下,递交时间、时钟同步精度、网络吞吐量、非实时通信带宽和冗余恢复时间等实时性能指标的测试方法,并开发了EPA实时性能测试平台并进行了测试应用,给出了EPA系统的测试评判。更多还原

【Abstract】 The deterministic communication scheduling method of EPA(Ethernet for plant automation) standard is introduced,and the index of real time performance of EPA is analyzed.The methods of testing real time performance indexes under certain topologic network are emphasized.These include delivery time,time synchronization accuracy,network throughput,non-real-time communication bandwidth,and redundancy recovery time.The test platform is developed and put into practical application.The test judgement of EPA system is given.更多还原