基于时变非线性特征和状态变量的农田灌溉节水控制方法  

Water Saving Control Method for Farmland Irrigation Based on Time-varying Nonlinear Characteristics and State Variables

作　　者：杨明娟 刘宗浩 岳鹏 孙利军 孙庆艳 李娜 YANG Mingjuan;LIU Zonghao;YUE Peng;SUN Lijun;SUN Qingyan;LI Na(Heilongjiang Agricultural Reclamation Survey Design and Research Institute Co.,Ltd.,Harbin Heilongjiang 150090,China;Beidahuang KenFeng Seed Co.,Ltd.,Harbin Heilongjiang 150087,China;Heilongjiang Agricultural Reelamation Vocational College,Harbin Heilongjiang 150025,China)

机构地区：[1]黑龙江农垦勘测设计研究院有限公司,黑龙江哈尔滨150090 [2]北大荒垦丰种业股份有限公司,黑龙江哈尔滨150087 [3]黑龙江农垦职业学院,黑龙江哈尔滨150025

出　　处：《农业工程》2024年第3期104-108,共5页AGRICULTURAL ENGINEERING

摘　　要：常规的农田灌溉节水控制,主要采用影响因子分析模拟农田灌溉精度得出农田灌溉节水控制方案,忽略了实际农田土壤的液限和塑限变量对控制方案造成的影响,导致节水控制结果的节水系数较低。提出了基于时变非线性特征和状态变量的农田灌溉节水控制方法。该方法计算农田土壤的基础参数分析时变非线性特征,根据分析所得的特征计算约束条件,建立目标约束函数,构建出农田灌溉的节水控制模型,计算农田土壤液限和塑限的状态变量重新演化模型的目标约束条件,得出最终的农田灌溉节水控制方案。试验结果表明,所提方法应用后得出的节水控制结果,表现出节水系数较高,均值达到0.477,节水效果较好,满足农田灌溉的现实应用需求。Conventional water saving control for farmland irrigation mainly uses impact factor analysis to simulate accuracy of farmland irrigation to obtain a water saving control plan for farmland irrigation,ignoring impact of actual liquid limit and plastic limit variables of farmland soil on control plan,resulting in a low water saving coefficient of water saving control results.A water saving control method for farmland irrigation based on time-varying nonlinear characteristics and state variables was proposed.This method calculated time-varying nonlinear characteristics of basic parameters of farmland soil,calculated constraint conditions based on analyzed characteristics,established a target constraint function,and constructed a water saving control model for farmland irrigation,calculated target constraint conditions of state variables of farmland soil liquid limit and plastic limit to re evolve model,and obtained final water-saving control plan for farmland irrigation.Experimental results showed that water saving control results obtained after application of proposed method exhibited a high water saving coefficient,with an average of 0.477,water saving effect was good and met practical application needs of farmland irrigation.

关 键 词：农田灌溉 节水灌溉 节水控制 时变非线性特征 状态变量 控制方法 

分 类 号：S274[农业科学—农业水土工程]