In order to predict the random time-delay of Internet-based networked control system effectively

a hybrid one step time-delay forecasting method based on Empirical Mode Decomposition(EMD)and Least Squared Support Vector Machines(LS-SVM)is presented in the paper.Firstly

EMD algorithm can decompose time-delay sequences into some intrinsic mode functions(IMF)

the IMF after decomposed remove the long-range dependence of original time-delay sequences and prominent the different local feature of the time-delay sequences.Secondly

according to the change law of each IMF

chose different LS-SVM model to predict time-delay.At last

all the forecasted values corresponded to these partitions are superposed to get the forecasted time-delay.Simulation results show that the proposed method has higher prediction accuracy.