中文摘要：

多模型自适应控制利用多个元素模型覆盖被控对象的不确定性，并针对这多个元素模型建立多个稳定的控制器。每一个采样时刻，基于一个以模型输出误差为变量的具有积分特点的指标切换函数，选择描述被控对象最优的元素模型，并将基于此模型的控制器切换为当前被控对象的控制器。研究如何调整多模型自适应控制器的结构和参数，提高控制品质，为多模型自适应控制器的应用和进一步研究提供理论基础。

英文摘要：

By using multiple model adaptive control, multiple element models were utilized to cover the uncertainty of the controlled system, and multiple controllers were set up according to multiple element models. Every sample time, based on a switching index function which is formed by the integral of output error of each element model, the element model which can describe the controlled system best was selected, and the controller based on this model was switched as the controller of the controlled system.The main methods about how to design the structure and parameters of the multiple model adaptive controller and how to enhance the property of control system were discussed. Those supplied a theory a~rection for the practical application and further research of multiple model adaptive control.