基于滑模PID的微型旋翼飞行器轨迹跟踪控制

Trajectory Tracking Control of Rotating Wing Micro Aerial Vehicle Based on Sliding Mode PID

针对微型旋翼飞行器的轨迹跟踪精度不高的问题,提出一种基于自适应调节PID(Proportion Integration Differentiation)增益的滑模控制器。基于李亚普诺夫稳定性理论,通过自适应律在线调节PID控制增益参数,设计饱和函数抑制滑模控制器的高频抖振,以实现轨迹跟踪误差系统对模型参数变化和外部扰动的鲁棒性。仿真结果表明,该控制器能驱动旋翼飞行器精确跟踪期望的轨迹,具有较高的控制精度,能满足实际工程应用的要求。

Aiming at the trajectory tracking problem of rotating wing micro aerial vehicle, an adaptive sliding mode controller based on adjusting the PID（Proportion Integration Differentiation） gain is proposed. To achieve the trajectory tracking error robustness of the model parameter variations and external disturbances, basing on Lyapunov stability theory, an adaptive law is adopted to adjust PID control gain parameters online. Saturation function is designed to inhibit sliding mode controller high-frequency chattering. Simulation results illustrate that the designed controller can drive the micro aerial vehicle to track the desired trajectory accurately, obtaining high precision, and can meet the requirements of practical engineering applications.