现代电子技术2017，Vol.40Issue(8)：14-18,5.DOI:10.16652/j.issn.1004⁃373x.2017.08.002
模糊专家与PID混合控制的温室高效增温算法研究
Research on greenhouse temperature increase algorithm of fuzzy-expert and PID hybrid control
摘要
Abstract
A Matlab simulation model for the greenhouse environment is created according to the energy-balanced green-house temperature digital model and the specific parameters of the actual greenhouse. The correlation coefficient(0.96887707) of predicted data and actual data,and the key coefficient (0.93872278) were obtained according to the results of analysis on the temperature forecast and the error statistics. A hybrid algorithm combining the fuzzy expert control with PID control is pro-posed. The algorithm can choose different control algorithms according to the comparison result between the deviation between the actual temperature and set temperature,and the specified threshold on each time slice. If the temperature deviation is great-er than the threshold value,the fuzzy expert control is selected;if the threshold is less than the threshold value,the control mode is switched to the PID control. The algorithm gives consideration to both dynamic and steady states. The simulation results show that the proposed algorithm can save energy by 13.68% compared with the non-optimized switch control,save energy by 9.07% compared with the PID control algorithm,and save energy by 5.89% compared with the expert fuzzy control algorithm. The practical application shows that the temperature increasing system controlled by the algorithm can increase the yield of the winter tomato by 2.1%,compared with the traditional switch control system in the greenhouse.关键词
混合控制/模糊专家控制/PID控制/高效节能/温室Key words
hybrid control/fuzzy expert control/PID control/efficient energy saving/greenhouse分类
信息技术与安全科学引用本文复制引用
王鸿磊,李晓东,徐平平..模糊专家与PID混合控制的温室高效增温算法研究[J].现代电子技术,2017,40(8):14-18,5.基金项目
国家自然科学基金(61271207 （）
61372104) （）
徐州市科技发展基金(XF13C035) （XF13C035）
院级科研课题基金(XGY201414) （XGY201414）
