嵌入式太阳跟踪定位控制系统设计与研究

Design and research of embedded solar tracking and positioning control system

太阳能设备应用中对太阳运动位置的跟踪和定位,决定了太阳能量的利用率。为了能够最大限度的获得太阳能量,设计并实现了精确跟踪太阳实时运动位置的跟踪定位控制系统。本系统设计方法是依托太阳位置算法,通过采集时间、空间信息计算后获得当前太阳高度角和方位角。将角度信息送入嵌入式控制器驱动两轴伺服电机进行运动控制,实现太阳位置的实时跟踪定位。通过将理论计算值与光强度传感器采集光斑最大强度数据对比,验证嵌入式太阳跟踪定位控制系统的准确性。通过太阳位置算法理论值与系统实测值对比表明,高度角误差±1°、方位角误差±3°,满足实时跟踪太阳运动位置的精度要求。

The solar energy utilization rate is determined by the tracking and positioning of solar motion in the application of solar equipment. In order to maximize the solar energy, a tracking and positioning control system is designed and implemented to accurately track the real time motion position of the sun. This system design method is based on the solar position algorithm, the current solar altitude angle and azimuth angle are obtained through time and space information calculation. The angle information is fed into the embedded controller to drive two-axis servo motor for motion, realizing the real-time tracking and positioning of the sun. The accuracy of the embedded solar tracking and positioning control system is verified by comparing the theoretical calculation value with the maximum intensity data collected by the light intensity sensor. The comparison between the theoretical value of the solar position algorithm and the measured value of the system shows that the altitude angle error ±1° and azimuth error ±3°. The result meet the accuracy requirement of tracking the position of solar movement in real time.