非线性飞控系统的滑模PI混合模糊逻辑控制

针对一类空间飞行器的非线性姿态控制问题，首先通过变换将其强耦合模型分解成若干个子系统，把各子系统之间的耦全、未建模动态和外界扰动视为系统的不确定性。而后提出了一种结合滑模控制与比例积分控制的模糊逻辑控制器，运用李亚普诺夫原理对系统的稳定性进行了分析。用这种控制器对系统进行分散鲁棒自适应控制，仿真说明相对于传统滑模控制器，它具有响应速度快，跟踪精度高，鲁棒性强的优点。

Hybrid Fuzzy Logic Control by Combining Slide Mode and PI for a Nonlinear Flight Control System

To solve the nonlinear attitude control problem of a class of spacecrafts, the strongly coupled dynamics model is decomposed into some subsystems and the coupling between the subsystems, unmodelled dynamics and exterior disturbances are regarded as the uncertainty of the system. Then a hybrid fuzzy logic controller which combines a sliding controller and a PI controller is proposed, and the stability of the system is analyzed using Lyapunov principle. By the decentralized robust adaptive controller in the control of the system simulation shows that the controller has the advantages of rapid response speed, good attitude tracking accuracy and robustness than the traditional sliding mode controller.