温室测控系统开关设备优化组合预测控制方法  

Predictive Control Method for Greenhouse Measurement and Control System Based on Switch Devices Optimization Combination

作　　者：沈敏[1] 张荣标[1] 盛碧琦[1] 宋永献[1] 

机构地区：[1]江苏大学电气信息工程学院,镇江212013

出　　处：《农业机械学报》2011年第2期186-189,161,共5页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家高技术研究发展计划(863计划)资助项目(2006AA10Z258)

摘　　要：考虑开关设备组合作用下温室测控系统的非线性动态特性,提出了结构简单、不需复杂数值计算的离散预测模型,在不小于最大时滞时域内设备组合不变情况下,对设备组合进行滚动优化预测控制,从而大大简化了温室测控系统预测控制算法的复杂性,缓解了测控系统分布大时滞问题。仿真分析和温度的均方差表明,对分布式、大时延温室测控系统的优化组合预测控制方法是有效的。Considering the nonlinear dynamic response of the greenhouse measurement and control system based on switch devices combination control,a discrete predictive model was proposed.The model had simple structure and uncomplex computation.Within the time domain not less than the maximum distribution delay of the system,the devices combination was keeped invariably and optimized rollingly to carry out predictive control,so the predictive control complexity of the system was greatly simplified,the problem of long distribution delays of the system was relieved.The simulation analysis and root mean square of the temperature showed that the optimization combination predictive control method was effective for the greenhouse measurement and control system with long distribution delays.

关 键 词：温室 预测控制 开关设备 优化组合 时延补偿 

分 类 号：S625.51[农业科学—园艺学] TP273.5[自动化与计算机技术—检测技术与自动化装置]