灰色预测模糊PID灌溉控制技术开发
Grey Prediction Fuzzy-PID Control Technology for Irrigation
张育斌 1魏正英 1马胜利 1唐大辉 1李建军2
作者信息
- 1. 西安交通大学机械制造系统工程国家重点实验室，西安710054
- 2. 新疆大学机械工程学院，乌鲁木齐830047
- 折叠
摘要
针对节水自动灌溉中的水肥比例调节和灌溉精度低的控制问题，设计了基于 PID控制、模糊控制和灰色预测控制相结合的控制算法，在P ID控制的基础上，通过模糊规则进行模糊推理，查询模糊矩阵表进行参数自整定，从而实时调整PID各项参数，加入多因素灰色预测MGM（1，n）解决时滞现象，进行有效的预测作物的需水量，达到对系统的精确灌溉控制。运行测试：该系统与常规PID控制相比，超调量降低了14．68％，系统的调节时间减少了86．62％；比较模糊PID控制，超调量略上升了1．9％，同时调节时间减少了77．71％；并验证了其在水肥浓度和肥量精量控制中，系统响应速度快和实时性好，稳定，大幅度提高了水肥灌溉效果。
Abstract
In this paper , fuzzy control and gray prediction control were designed .The PID control was based on fuzzy rules ,query fuzzy matrix table to obtain parameter self-turning .Then it can adjust the parameters of PID in real-time to achieve effectiveness .The running results show that the overshot is reduced by 14 .68% and the response time of this system reaches an 86 .62% reduction compared with conventional PID control ,the overshot has slightly risen by 14 .68% and the response time of this system reaches a 77 .71% reduction compared with fuzzy PID control .Meanwhile ,this system has response speed and good real-time performance ,stability through the experi‐ment of water fertilizer concentration and fertilizer consumption precise control ,so the water fertilizer irrigation effect is greatly en‐hanced .
关键词
水肥灌溉/PID控制/模糊PID算法/灰色预测控制Key words
water fertilizer irrigation/PID control/fuzzy PID control/gray prediction control引用本文复制引用
基金项目
农业领域国家科技计划(“863”计划)资助项目(2011AA100509-01)
新疆维吾尔自治区高技术计划项目(201413102)
出版年
2016
国家科技期刊平台
NSTL
维普
万方数据