基于太阳敏感器的移动式太阳跟踪控制系统研究

针对移动设备太阳能供电需求问题,开展了高精度移动式太阳跟踪控制系统研究。采用一种新型的大视场、高精度太阳敏感器,基于双轴跟踪方式研制了移动式太阳跟踪装置;并针对移动平台不间断晃动、非直线行驶、转弯导致跟踪不稳、精度降低甚至跟踪目标丢失等问题,结合太阳敏感检测特点,提出了选择性位置式PID跟踪控制策略。对跟踪系统进行了车载试验,结果表明,相比于传统的四象限传感器跟踪,基于太阳敏感器的跟踪系统搜寻视野达120°,精度达±0.5°,具有响应速度快、跟踪精度高、稳定性好、目标丢失后找回快等优点。本文为移动式太阳跟踪提供了一种可靠可行的新方案,该方案稍加改进还可用于高空太阳电池标定等领域。

Control technology of portable solar tracking based on sun sensor

Aiming at the solar power demand of mobile devices, a high precision portable solar tracking control sys-tem is studied. A new type of sun sensors with wide field and high accuracy is chosen, and a portable solar tracking device was developed based on two-axis tracking. In view of the difficulties in tracking practice of the mobile plat-form, such as continuous vibration, non-straight driving even turning direction, the problems of tracking target missing will arise. In the paper, the selective PID tracking control strategy combining with the test characteristics of the sun sensor is proposed. Vehicle tests of the tracking system have been carried out, and the results show that the tracking system based on sun sensors has a range search view up to 120 ° , and the precision of ± 0. 5 ° , and has the advantages of fast response speed, high tracking precision, good stability and fast recovery after a target is lost, as compared to the four quadrants sensor tracking system. This paper provides a reliable and feasible new scheme for portable solar tracking control system, and the scheme with a little improvement can also be used in the area of high-altitude solar cell calibration.