不确定采样周期输出反馈网络控制系统的稳定性

为研究基于模型的输出反馈网络控制系统在传输时延情况下的稳定性,以得到固定时延系统采样周期的最大波动范围,在系统中,采用状态观测器及内设模型估计采样时刻之间被控对象的状态,并充分利用系统结构和在采样点状态更新的信息。针对不存在丢包和存在丢包的情况,通过由采样周期、被控对象与模型参数构造的稳定性判别矩阵给出了使网络控制系统渐近稳定的充分条件。通过仿真示例验证了充分条件的正确性。

Stability of Networked Control Systems with Output Feedback and Uncertain Sampling Period

In order to get the stability of model-based networked control system with output feedback and transmission delay,we use a state observer and an inner model to estimate the states of the plant controlled between the sampling times,and the knowledge of the system construction and state substitutions at sampling times.By constructing a test matrix in terms of the sampling period,the plant controlled and the model parameters,we give a sufficient condition to test the asymptotic stability for the system.A simulation example shows the correctness of the sufficient conditions.