农业工程学报2011，Vol.27Issue(6)：157-161,5.DOI:10.3969/j.issn.1002-6819.2011.06.029
果园管道喷雾系统药液压力的自整定模糊PID控制
Self-adjustable fuzzy PID control for solution pressure of pipeline spray system in orchard
摘要
Abstract
Orchard pipeline spraying system has the characteristics of non-linear, apparent delay and a fluctuating pipeline solution pressure along with the changes of nozzle amount. For solving this problem, a self-adjustable fuzzy PID control strategy with differential preceding and gearshift integral was applied on the pipeline solution pressure control. Based on the difference between current pressure and target value, as well as the difference trend, controlling parameters for pipeline solution pressure control were achieved by adjusting the fuzzy PID parameters online and calculating the control variables with the PID algorithm of gearshift integral and differential preceding. Experimental results indicated that, compared with other strategies without the fuzzy PID algorithm, the responding time for pressure rise and adjustment were shortened by 18.42% and 12.56% respectively. The maximum overshoots and system error were reduced by 4.43% and 50% respectively. This method can meet the requirements of pressure control for orchard pipeline spraying system.关键词
果园；管道；喷雾；压力控制；自整定模糊PID；变速积分；微分先行Key words
orchards/pipelines/ spraying/ pressure control/ self-adjustable fuzzy PID/ gearshift integral/ differential preceding分类
信息技术与安全科学引用本文复制引用
宋淑然,阮耀灿,洪添胜,代秋芳,张丞..果园管道喷雾系统药液压力的自整定模糊PID控制[J].农业工程学报,2011,27(6):157-161,5.基金项目
公益性行业(农业)科研专项经费项目(200903023) （农业）
现代农业产业技术体系建设专项(农科教发[2007]14号,财教[2007]431号)；国家自然科学基金项目(30971684) （农科教发[2007]14号,财教[2007]431号）
