一种飞机俯仰角二自由度PID控制算法

飞机俯仰角是飞机纵向运动中最基本的控制模态,实现对其控制难度较大。针对飞行器俯仰角增量和舵面偏移量构成的四阶系统简化后的一阶积分延时系统,文中提出了一种二自由度PID控制算法。该算法基于多主导极点配置法与直接综合法,将设定点滤波器与控制器分开设计,并以解析式的形式给出整定律。通过算法仿真验证可知,文中提到的方法能较好地应用于飞行器俯仰角的四阶系统,并且具有优良的扰动抑制性能以及更好的伺服性能和鲁棒性。

A Two Degreeof Freedom PID Control Algorithm for Aircraft Pitch Angle

As the most basic control mode of the aircraft longitudinal motion, it is difficult to control the aircraft pitch angle. A two-degree-of-freedom PID control algorithm was proposed for the first-order integrating system with time delay, which was simplified by a fourth-order system. The fourth-order system was composed of the increment of pitching angle and the offset of rudder surface. The main idea of the algorithm was to design the set-point filter and controller separately based on the multiple dominant pole placement method and the direct synthesis method. The tuning rules were given in form of analytical equation. Simulation results showed that the proposed method could be well applied to the fourth-order system of aircraft pitch angle, and also had excellent disturbance rejection performance and better servo performance and robustness.