【摘要】 随着科学技术的不断进步,工业生产等领域对无人机的要求也不断提高,传统PID控制在系统中存在外界干扰无法满足无人机的控制要求。研究了一种改进的分数阶自抗扰(FOADRC)控制器方法,并将其应用在四旋翼无人机高度姿态的控制,以提高控制效果。基于传统线性自抗扰(LADRC)控制器,提出了一种基于模型的状态观测器,并结合改进型LADRC和分数阶控制(FOPD)获得FOADRC控制器,Matlab/Simulink仿真中的实验比较表明:在阶跃响应、方波跟踪、抗干扰性能等方面都比传统控制器提高10倍以上。更多还原

【Abstract】 With the continuous progress of science and technology,industrial production and other fields of UAV requirements are also increasing;the traditional PID control system in the presence of external interference can’t meet the control requirements of UAV. In this paper,an improved fractional order active disturbance rejection(FOADRC) controller is studied and applied to the attitude control of quadrotor UAV to improve the control effect. Based on the traditional linear active disturbance rejection(LADRC) controller,a model-based state observer is proposed;and the improved LADRC controller and fractional order control(FOPD)are combined to obtain the FOADRC controller. The experimental comparison in Matlab/Simulink simulation shows that the step response,square wave tracking and anti-interference performance are improved by more than 10 times compared with the traditional controller.更多还原