基于线性自抗扰控制器的光伏板旋转定位控制

Active disturbance rejection controller for the rotary positioning system of photovoltaic panels

针对光伏板旋转定位系统设计了线性自抗扰控制器。通过跟踪微分器分别得到光伏板旋转参考倾角的过渡值及其微分信号,使参考倾角平滑化,防止产生超调。设计扩张状态观测器(ESO)估计光伏板旋转倾角及其微分的同时,估计总和扰动,进而设计具有干扰补偿的控制律实现了对光伏板旋转定位系统的跟踪控制。最后,通过数值仿真验证了所设计的线性自抗扰控制方法的有效性与优越性。

The linear active disturbance rejection controller （LADRC） is designed for the rotary positioning system of photovoltaic panels. A tracking differentiator （TD） is designed to obtain the transition value and the differential of the rotary reference angle. An extended state observer （ESO） is designed to estimate the rotary angle and its differential of the act rotating angle, and the total disturbance is estimated simultaneously. Then, a linear control law is properly designed based on the ESO and TD to achieve satisfying performance in controlling the rotary positioning system of photovohaic panels. Finally, an illustrative example is provided to verify the effectiveness and superiority of the proposed LADRC.