分数时延时变的充分必要条件

Necessary and Sufficient Condition of Fractional Delay Varying with Time

着重从理论上分析完备的被控对象时延在一个采样周期范围内变化时 ,系统 B参数估计值变化的规律 ,得出分数时延时变的充要条件 .据此 ,能正确区分参数时变还是分数时延发生了变化 ,这一结论对于计算机控制的系统 。

The regularity which the estimation of B parameters varying with fractional delay in generalized Z transformation is analyzed.And the necessary and sufficient condition of the fractional delay varying with time is obtained and proved theoretically.According to the theory,the event which the parameter or the fractional delay varying with time can be identified correctly.This conclusion is important for the control system made use for computer and computer with complex algorithm specially.