針對工業控制系統的特點，在不改變以太網協議的條件下,采用一種新的動態通信平
滑過濾器來控制網絡負荷以滿足控制系統的實時通信要求。研究表明：該動態通信平滑過濾器不僅可以為非實時數據提供合理的網絡吞吐率，并且可以顯著地控制實時數據傳輸的超時比率，其性能明顯優于靜態通信平滑過濾器。
關鍵字： 工業以太網；通信平滑；實時通信
Study Of Adaptive-rate Traffic Smoother Over Industrial Ethernet Shi Xiao-yong, Xu Wen-bo, Yang Chao-long (Institute of Information Engineering，Southern Yangtze University，Jiangsu Wuxi 214122) Abstract：Due to the characteristic of industrial control systems, a methodology was presented that using a new adaptive-rate traffic smoother to control the network load so as to meet the requirement of real-time communications without changing the protocol of Ethernet. The result shows that the proposed traffic smoother can not only provide a reasonable average throughput-rate for non-real-time data but also yield a remarkable low deadline-miss ratio for real-time data communications. It is obvious that the performance of the adaptive-rate traffic smoother is better than that of the fix-rate traffic smoother’s.
Keywords: Industrial Ethernet; traffic smoothing; real-time communication