摘要
为解决轻小型喷灌机组喷洒运行、效果检测和能耗分析中涉及到的技术指标综合评价问题,提出采用主成分分析法对喷灌机组进行综合评价的数学模型。总结了喷灌机组喷灌面积、喷灌强度、组合均匀度和能耗等多种单技术评价指标,增加了综合评价的过程。选取评价其技术特性的5个单重要指标,应用所建的评价模型对4套喷灌机组进行综合评价。结果表明:前2个主成分包含了5个指标全部信息的98.75%,最终利用综合主成分公式得到4套喷灌机组综合技术评价指标的排名。该模型可对喷灌机组技术指标进行综合评价,也可为喷灌机组的设计优劣提供评判依据。
To overcome the comprehensive evaluation problems for analysis on light and small sprinkler irrigation system,an idea of principal component analysis（PCA） method was presented,and the mathematical model of comprehensive evaluation was established. Five important single technical indexes,which were used for evaluating its technical characteristic,included irrigated area,irrigated depth,uniformity coefficient and energy consumption. Four light and small sprinkler irrigation systems were evaluated by using the composite model. Results showed the former two principal components contained 98.75% of the information for the five indexes. At last,the composite index rank of the four systems was got by the integrated equation. The mathematical model can be used for comprehensively evaluating the index of light and small sprinkler irrigation system and provide proofs for optimal design of the sprinkler irrigation system.
出处
《农业工程学报》
EI
CAS
CSCD
北大核心
2010年第11期98-102,共5页
Transactions of the Chinese Society of Agricultural Engineering
基金
国家"863"高技术研究发展计划资助项目(2006AA100211
2011AA100506)
关键词
喷灌机组
主成分分析
数学模型
评价指标
综合评价
sprinkler systems
principal component analysis
mathematical models
evaluation index
comprehensive evaluation
