基于PID控制器的鲁棒自动飞行控制系统设计

在某初教机的线性模型基础上,建立了飞机的纵向和横向传递函数,分析了模型参数的不确定性,通过使用MATLAB中的NCD模块对飞行控制系统及PID控制器等参数进行优化,设计出了飞机的自动驾驶仪高度保持和航向保持模式。这种方法既避免了复杂的计算和编程,又使系统具有较好的稳定性、动态性能和鲁棒性,克服了飞机模型参数随着高度和速度的变化(即模型参数存在不确定性)而需要按照多个不同高度和速度的飞行区域设计一系列控制器的缺点。

Design of Robust Flight Control System Based on PID Controller

Based on a linear mode of primary training plane,horizontal transfer function and lateral transfer function of airplane are established,then uncertainty of mode parameter is analyzed,parameter of PID controller is optimized by using NCD module of MATLAB,and height holding mode and head holding mode of airplane autopilot are designed.Simulation results indicate that this method has not complex calculating and programming,and it has good stability,dynamic performance and robustness.It overcomes the disadvantage that a series of controllers in different height and velocity flight region are designed because mode parameter of aircraft is changed with the changes of height and velocity.