对于非线性时滞系统的最优控制 ,提出一种基于线性时滞模型和二次型性能指标问题的迭代算法 ,将时滞系统化为满足马尔可夫性质的增广状态系统 ,在模型和实际存在差异的情况下 ,该算法通过迭代求解时滞线性最优控制问题和参数估计问题 ,获得原问题的最优解 .仿真实例表明该算法的有效性和实用性 . For the optimal control of nonlinear time-delay system, an iterative algorithm based on linear time-delay model and quadratic performance index problem is proposed. The delay is systematized to an augmented state system that satisfies the Markov property. The algorithm obtains the optimal solution to the original problem by iteratively solving the linear optimal control problem and the parameter estimation problem.The simulation results show the effectiveness and practicability of the algorithm.