针对BTT导弹控制系统所具有的非线性、快时变性以及模型不确定性问题,研究了一种基于变论域的模糊自适应控制器。通过选取合适的论域伸缩因子,提高控制精度;利用模糊模型逼近控制系统的非线性部分,采用李亚普诺夫方法证明所设计的非线性控制系统的渐进稳定性并推导出自适应律。最后对控制器进行了仿真验证,仿真结果表明跟踪性能良好。

An adaptive fuzzy controller was designed based on variable universe approach in view of nonlinearity, model uncertainties and fast variable time possessed by BTT missile control system. The fuzzy logic controller with variable region is a kind of fine adaptive controller. The control precision was improved with a proper dilation factor. The fuzzy model was designed to approximate the uncertainty part, then, the Lyapunov stability theory was used to guarantee the closed-loop stability and prove that the asymptotic stability of nonlinear control system, and derive the adaptive rules. Finally, the results of simulation demonstrated the controller achieved excellent tracking performance.