基于分片线性化方法辨识一类非线性系统 ,给出了非线性系统的多线性模型表示。基于线性模型建立多个控制器 ,基于最大最小指标切换函数构成多模型自适应控制器。给出了非线性系统多模型自适应控制算法的优化模型集建立方法 ,解决了多模型自适应控制模型多、计算量大的问题。仿真结果证明了算法的有效性 Based on the piecewise linearization method, a class of nonlinear systems is identified, and the multilinear model representation of nonlinear systems is given. Based on the linear model, multiple controllers are established, and the multi-model adaptive controller is constructed based on the maximum and minimum index switching functions. This paper presents an optimization model set method for multi-model adaptive control algorithm of nonlinear system, which solves the problem of multi-model adaptive control model with large amount of calculation. Simulation results prove the effectiveness of the algorithm