输入时滞系统的多频干扰预测补偿  

Prediction and Compensation of Multi-Frequency Disturbancefor Input Time Delay Systems

作　　者：宁佳慧 文新宇[1] NING Jia-hui;WEN Xin-yu(School of Electronic Information Engineering,Taiyuan University of Science and Technology,Taiyuan 030024,China)

机构地区：[1]太原科技大学电子信息工程学院,太原030024

出　　处：《太原科技大学学报》2024年第5期467-473,共7页Journal of Taiyuan University of Science and Technology

基　　金：国家自然科学基金(61873346);山西省应用基础研究(202103021224271,201901D111263,20210302123210);山西省重点研发计划(202130245945);山西省研究生教研项目(2021YJJG260)。

摘　　要：针对一类具有多频正弦干扰的输入时滞系统,提出了一种干扰补偿方法。首先建立干扰等效模型,通过设计全阶观测器,对受控系统和干扰的状态进行估计。进而利用干扰状态估计值对多频干扰进行分解,预测出各个频率分量对输入通道的影响,实现干扰的补偿。基于这种干扰预测方式设计输入时滞系统控制器,给出复合闭环系统渐近稳定性条件。经数值仿真验证了所提出方法的有效性。A disturbance compensation method is proposed for a class of input time-delay systems subject to multi frequency sinusoidal disturbances.Firstly,the disturbance equivalent model is established,and the states of the controlled system and disturbance are estimated by designing a full order observer.Furthermore,the multi-frequencies disturbance can be decomposed using the estimate value.As such,the influence of each frequency component act on the input channel can be predicted to realize the disturbance compensation.Based on the proposed disturbance prediction method,the controller of the input time-delay system is designed,and the asymptotic stability condition of the composite closed-loop system is given.The effectiveness of the proposed method is verified by numerical simulations.

关 键 词：输入时滞系统 多频干扰 全阶观测器 干扰预测 

分 类 号：TP13[自动化与计算机技术—控制理论与控制工程]