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 con-trolled 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 simula-tions.
关键词
输入时滞系统/多频干扰/全阶观测器/干扰预测
Key words
input time delay systems/multi-frequency disturbance/full-order observers/disturbance prediction
维普
万方数据