滑模变结构飞行控制系统的设计

针对具有参数不确定性和外加干扰的飞机数学模型在控制执行机构受限的前提下，设计了带有积分项的滑动平面方程，通过选择适当的对角参数矩阵实现三通道的解耦控制。在分析Lyapunov函数的基础上，设计了变结构控制律，既满足滑动平面的到达条件，又保证了系统渐地稳定。对F－16战斗机俯仰角速度跟踪控制系统进行了设计，仿真结果表明，俯仰角速度以较高的精度跟踪给一值，系统性能良好。

VARIABLE-STRUCTURE FLIGHT CONTROL WITH SLIDING SURFACE

An aircraft's mathematic model with uncertainties and perturbations is given. The deflections and deflection rates of the actuators are assumed to be bounded. An appropriate sliding mode function is chosen to realize control decoupling. On the basis of Lyapunov function, a variable -structure controller is designed to ensure not only the reaching condition, but also the stability of the control system. The pitch rate tracking system is designed. The simulation results show that the system' s performance is satisfactory.