基于液压传动的新型太阳能聚光照明跟踪系统设计

针对太阳方位存在时变性、太阳能能量分散的问题，提出一种基于液压传动的二维双轴太阳能聚光照明跟踪系统。设计一种新型粗、精调相结合的二级定位跟踪传感器，完成粗调大范围追踪阳光信号及细调精准采集阳光方位；主控核心STM32单片机控制液压传动系统自动高精度寻找阳光，保证太阳光垂直照射机械平台的采光板；通过直径为100 mm的菲涅尔透镜将阳光汇聚成2 mm高亮光斑，利用光纤将光斑导入特定区域照明，实现自然光照明目标；使用多传感器数据有效融合来增加系统在外界恶劣天气下的工作稳定性与自保护性。结果表明：该系统的跟踪误差小于0.1°，且光纤终端光斑始终高亮，符合新能源精准利用的发展要求。

Design of New Solar Spotlight Tracking System Based on Hydraulic Transmission

In view of the time-varying solar azimuth and the dispersion of solar energy,the two-dimensional two axis solar spotlight tracking system was proposed based on hydraulic transmission.The new type of two-stage positioning and tracking sensor combining coarse and fine adjustment was designed,which could be used to track the sunlight signal in a large range by coarse adjustment and accurately collect the sunlight direction by fine adjustment;the microcomputer STM32 was used to control the hydraulic transmission system to search for the sunlight automatically and accurately to ensure that the sunlight vertically irradiated the daylighting board of the mechanical platform;the sunlight was converged into a bright spot of 2 mm by using the Fresnel lens with the diameter of 100 mm,and the light spot was led into a specific area for illumination by using optical fiber,so the goal of natural light illumination was achieved;the multi-sensor data fusion was used to increase the stability and self-protection of the system in external bad weather.The results show that the tracking error of the system is less than 0.1°,and the optical fiber terminal spot is always bright,which meets the development requirements of new energy precise utilization.