太阳跟踪控制系统的研究与设计

太阳跟踪控制系统能使太阳能聚光器受光面始终垂直于太阳入射光线，显著增加太阳能热发电系统的能量接收量，大大提高太阳能发电系统的发电效率。本文设计了一种基于STM32的双轴太阳跟踪控制系统，该系统可根据光照条件变化自动切换视日运动轨迹跟踪控制方法与光电跟踪控制方法，调整电机转动最终完成太阳位置的全天候精确跟踪。实验表明该双轴跟踪控制系统的太阳位置每小时累计误差小于2°，基本满足预期要求，在太阳能热利用产品上具有较高应用价值。

Research and design of sun tracking control system

The sun‐tracking control system enables received surface of the solar optics always perpendicular to the incident light ,which can significantly increase energy received of the solar thermal power generation system ,greatly improve the power generation efficiency of solar power generation systems .This paper presents a dual‐axis sun tracking control system based on STM32 ,which can switch the solar trajectory tracking control method and the photoelectric tracking control method automatically according to the lighting conditions ,and adjust the motor rotation to complete accurately the position of sun around the clock tracking .Test shows that the sun position accumulated error value of the dual‐axis tracking control system is less than 2 degrees per hour .The system basically meet expectations ,and has a higher practical value on solar thermal products .