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研究了多步时滞随机系统基于ＥＬＳ算法的适应控制问题，建立了多步时滞系统的ＥＬＳ算法，并推得用该算法辨识系统参数的收敛速率。证明了闭环系统是全局稳定的，且对参考信号的跟踪达到最优。
The adaptive control problem based on ELS algorithm for multi-step stochastic systems with stochastic delays is studied. The ELS algorithm for multi-step time-delay systems is established, and the convergence rate of the system parameters is deduced. It is proved that the closed-loop system is globally stable and the tracking of the reference signal is optimal.