关键词：控制器；飞行器；复合控制
摘 要：Advantages of sliding mode control (SMC). It is well known that SMC is a robust method to control nonlinear and uncertain systems which has attrac-tive features to keep the system insensitive to the uncertainties on the sliding surface. The conventional SMC design approach consists of two steps. First, a sliding manifold is designed such that the system trajectory along the man-ifold acquires certain desired properties. Then, a discontinuous controller is designed such that the system trajectories reach the manifold in finite time. As a general design tool for control systems, SMC has been well established, and the primary advantages of which are: Ⅰ) fast response and good transient performance; Ⅱ) robustness against a large class of perturbations or model uncertainties; and Ⅲ) the possibility of stabilizing some complex nonlinear systems which are difficult to be stabilized by continuous state feedback laws.