摘要
针对光纤光导系统对于太阳跟踪精度、稳定度方面的双重严格要求,设计了光敏阵列太阳定位传感器,并结合太阳轨道解算,实现了太阳光聚焦点的精确定位,并利用塑料光纤进行了聚焦太阳光传输,获得了系统输出光功率谱密度分布曲线与相关光学定量数据。其中,针对光纤光导系统的对焦过程,研制了高位置分辨率的光敏阵列传感器来感知聚焦光斑确切位置,能够解决初始安装位置误差问题,并通过对太阳轨迹的运行趋势进行预测,自傲控制流程中嵌入同步跟踪模式,实现了精确性与稳定性的兼容。对光纤输出光谱进行的定量检测结果表明,光纤光导系统输出光功率谱密度与太阳光具有良好的相似度,其色品坐标、显色指数和主波长参数也与太阳光接近,可在特定场合充当自然光源使用。
According to the twin constraints of tracking precision and stabilization for the daylight concentrating and transmitting system via fibers, a sun positioning sensor using photodiodes matrix was developed which could pinpoint the focusing spot of sun. And the daylight concentrating and transmitting has been realized based on a hybrid sun tracking strategy which combines the orbit calculation and the sun positioning sensor. The sun tracking process has both accuracy and stability due to the hybrid control strategy embedded into the program. The quantitative data of the optical parameters and the spectrum of output beam were obtained. The results of experiment show that the spectrum of light transmitted by fibers is similar to that of nature light. This similarity also exists in chromaticity coordinate, color rendering index, dominant wavelength between light transmitted by fibers and nature light. So this technology can serves as the natural light source in some specific environment.
出处
《华北电力大学学报（自然科学版）》
CAS
北大核心
2011年第5期48-52,共5页
Journal of North China Electric Power University：Natural Science Edition
基金
国家自然科学基金资助项目(61004084)
关键词
太阳跟踪
光纤
聚焦
传输
sun tracking
fibers
concentrating
transmitting
