基于UKF滤波模糊PID控制的太阳跟踪系统

Research on the Sun Tracking System Based on UKF Filter and Fuzzy-PID Controller

太阳跟踪系统是一个复杂的非线性系统,为了提高太阳跟踪系统的跟踪性能和稳态精度,针对其结构参数变化大、易受到噪声和干扰影响的特点,提出了一套基于UKF滤波的模糊PID控制器。该模糊控制器是将传统的PID控制算法与模糊控制算法相结合,采用UKF滤波算法去除干扰和噪声对系统的影响。由Matlab仿真结果表明,此跟踪系统相比传统的跟踪系统具有良好的动态和稳态性能,鲁棒性增强,跟踪性能显著提高。

The sun tracking system is a complex nonlinear system. In order to improve tracking performance and higher steady precision of the system, based on the characters of the large Varied region of the system and easy to be interfered by the noise and interference, a parameter selftuning fuzzyP ID controller w ith UKF filter was intro duced. Which combining traditional PID control algorithm and fuzzy control algorithm, and the noise and interference signals were filteied with UKF filter. T he smiulation results in the Matlab ind icate that the sun tracking system can enhance the performance of tracking system, and has better dynamic and steady state performance and strong robust ness.