基于DSP的斜轴式太阳跟踪系统

针对目前光电式太阳跟踪系统在低辐照和多云天气下无法实现对太阳连续跟踪且跟踪精度较差的问题，设计了一种新型太阳跟踪系统。系统首次采用斜轴式机架转台，以DSP芯片为主控制器，采用CMOS图像传感器取代传统光电传感器。首先DSP控制图像传感器对采集的图像进行实时处理，然后精确定位太阳质心，并计算其相对于图像传感器视场中心的误差；接着对误差采用模糊自适应PID控制；最后由DSP的EV产生相应的PWM波对斜轴转台实施闭环驱动，实现对太阳的实时高精度跟踪。根据实验数据分析，本系统有效解决了无法对太阳连续跟踪的问题，且大幅度提高了太阳跟踪精度。...

Full description

Saved in:
Bibliographic Details
Published in电子技术应用 Vol. 40; no. 5; pp. 24 - 27
Main Author 刘文 周旺平 王国栋
Format Journal Article
LanguageChinese
Published 南京信息工程大学信息与控制学院,江苏南京,210044 2014
Subjects
DSP
太阳跟踪
斜轴
模糊自适应PID
DSP
solar tracking
斜轴
fuzzy self-adaptive PID
太阳跟踪
模糊自适应PID
tilting axis
Online AccessGet full text
ISSN0258-7998

Cover

More Information
Summary:针对目前光电式太阳跟踪系统在低辐照和多云天气下无法实现对太阳连续跟踪且跟踪精度较差的问题，设计了一种新型太阳跟踪系统。系统首次采用斜轴式机架转台，以DSP芯片为主控制器，采用CMOS图像传感器取代传统光电传感器。首先DSP控制图像传感器对采集的图像进行实时处理，然后精确定位太阳质心，并计算其相对于图像传感器视场中心的误差；接着对误差采用模糊自适应PID控制；最后由DSP的EV产生相应的PWM波对斜轴转台实施闭环驱动，实现对太阳的实时高精度跟踪。根据实验数据分析，本系统有效解决了无法对太阳连续跟踪的问题，且大幅度提高了太阳跟踪精度。
Bibliography:solar tracking ; tilting axis ; DSP ; fuzzy self-adaptive PID
In low radiation and cloudy weather, photoelectric solar tracking system can not achieve continually track to solar, and its tracking accuracy is also very low. To solve this problem, we propose an innovative solar tracking system. It firstly adopts rotary table with tilting axis, uses DSP chip as the main controller and replaces traditional photoelectric sensor with image sensor CMOS. Initially, DSP controls the image sensor to process the collecting image in real time, then locates the sun＇s center of mass accurately, calculates deviation between the sun＇s center of mass and view center of the image sensor, and uses fuzzy self-adaptive PID control algorithm on errors. Finally, EV of DSP chip produces PWM waves to achieve closed loop drive of rotary table with tilting axis. It aims at achieving high level real-time accuracy tracking to solar. According to experiment result, this system can solve the problems of solar tracking and dramatically impro
ISSN:0258-7998