一种不定时延与数据包丢失的统一建模方法

Research on Modeling Method with Unit of Time Delay and Drop Date-packet

研究更接近于实际情况的不确定性时滞丢包模型,人为设置数据包不确定迟延转化固定迟延的时间标准,而不是以数据包最坏情况的迟延为标准。数据包迟延超过固定迟延的时间标准即认为数据包"丢失",也包括了数据包确实丢失的情形,从而把时延和数据包丢失建模统一起来,并且利用迟到的数据对"丢失"的数据进行预估补偿,而不是丢弃不用。仿真结果表明所提到的方法是有效的。

For the networked control systems （NCS） with the effort of uncertain short delay and the data-packet dropout, set the time stand of uncertain short delay being transformed into constant delay, and it is not the longest delay time. Considering the data being the data-packet dropout, its time delay is longer than the time stand, including the date-packet that is really lost. Unify the time delay and the dropped data-packet model together, and compensate the data-packet dropout with the late data that dropout before. Finally, an example shows the effectiveness of the proposed approach.