工学硕士学位论文智能自适应预测模糊控制温室系统研究电子书

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毕业论文范文题目： 工学硕士学位论文智能自适应预测模糊控制温室系统研究电子书，论文范文关键词： 工学硕士学位论文智能自适应预测模糊控制温室系统研究电子书
工学硕士学位论文智能自适应预测模糊控制温室系统研究电子书毕业论文范文介绍开始：
　　工学硕士学位论文智能自适应预测模糊控制温室系统研究
　　摘要
　　设施农业是实现我国农业可持续发展的重要组成部分，现代化温室是设施农业的精华，工厂化农业的核心。温室就是建立一个模拟适合生物生长的气候条件，创造一个人工气象环境，来消除温度对生物生长的限制。而且，温室能克服环境对生物生长的限制，能使不同的农作物在不适合生长的季节产出，使季节对农作物的生长影响不大，部分或完全摆脱了农作物对自然条件的依赖。本文在查阅了大量国内外温室控制材料基础上，针对目前国内温室控制系统现状，通过分析温室内环境因子特点，把自适应预测技术、模糊控制技术、计算机控制技术、单片机控制技术和串行通信技术应用于温室系统设计与研制，研制了一套通用性强，具有一定智能化、成本低、符合我国国情的温室控制系统，实现主要环境因子综合控制，为
　　作物提供良好的生长环境。针对温室系统特点，所研制的控制系统主要用来控制温室系统内部的
　　温度、湿度、光照度和二氧化碳浓度四个参数。考虑到温室系统内部情况复杂，很难建立精确的数学模型，且具有很强的耦合与滞后性，因而采用自适应预测与模糊控制相结合的算法对温度、湿度综合控制，减小温度、湿度存在的耦合与滞后性对系统输出控制的影响。本文设计了控制器的软硬件部分。硬件设计采用上下位机两级控制方式，上位机采用PC 机，下位机采用单片机。上位机主要实现了数据存储，
　　控制参数向下位机输送，显示实时数据等功能，采用VB 编写上位机控制界面；下位机单片机主要功能是接收前向通道采集值，将其传给上位机，并通过下位机软件分析处理，输出信号经外接电路放大控制执行机构。同时，还对单片机系统的外接硬件电路进行了设计。本控制系统的提出，为温室控制提供了一种途径。
　　关键词温室；模糊控制；单片机；VB
　　
　　目录
　　摘要 ················································································································ I
　　Abstract·············································································································· II
　　第 1 章绪论·····································································································1
　　1.1 温室系统介绍·······················································································1
　　1.2 国内外温室控制现状分析及发展趋势················································1
　　1.3 我国目前主要的温室类型及性能························································3
　　1.3.1 温室类型·························································································3
　　1.3.2 温室主要的性能指标·····································································5
　　1.4 温室系统主要参数和其特点································································6
　　1.5 智能温室系统的特点···········································································6
　　1.6 本课题研究的目的、意义····································································7
　　第 2 章智能温室系统总体设计 ·····································································8
　　2.1 被控参数设定、算法及硬件选择···························································8
　　2.2 系统的总体设计原则···········································································9
　　2.3 系统设计方案·····················································································10
　　2.3.1 硬件系统设计方案·······································································10
　　2.3.2 软件系统设计方案·······································································11
　　2.3.3 控制算法设计方案·······································································13
　　2.4 本章小结·····························································································15
　　第 3 章控制算法与控制器设计 ···································································16
　　3.1 自适应预测器的设计·········································································16
　　3.2 模糊控制器的设计·············································································20
　　3.2.1 精确量的模糊化···········································································21
　　3.2.2 模糊控制规则的建立···································································23
　　3.2.3 模糊推理·······················································································26
　　3.2.4 模糊量的清晰化···········································································27
　　3.3 自适应模糊控制器的编程步骤··························································29
　　3.4 本章小结·····························································································30
　　燕山大学工学硕士学位论文
　　VI
　　第4 章温室控制系统硬件设计 ···································································31
　　4.1 硬件系统设计原则·············································································31
　　4.2 前向通道设计·····················································································32
　　4.2.1 前向通道含义及特点···································································32
　　4.2.2 传感器选择···················································································33
　　4.2.3 模数转换器(A/D)选用及功能介绍··············································34
　　4.3 微处理器设计及器件选用··································································37
　　4.3.1 微处理器元器件选择···································································37
　　4.3.2 微处理器元器件介绍···································································38
　　4.4 外接执行机构电路设计·····································································44
　　4.4.1 输出控制信号方式介绍·······························································44
　　4.4.2 输出执行电路设计·······································································46
　　4.5 电源电路·····························································································48
　　4.6 本章小结·····························································································49
　　第 5 章智能温室控制系统软件设计 ···························································50
　　5.1 汇编软件设计·····················································································50
　　5.1.1 软件设计前几点说明···································································50
　　5.1.2 程序介绍·······················································································51
　　5.2 上位机VB 软件设计··········································································61
　　5.2.1 多温室监控主界面·······································································61
　　5.2.2 单个温室控制界面··········································································61
　　5.2.3 可视化界面数据库·······································································66
　　5.3 串行通讯协议·····················································································67
　　5.3.1 串行通信连接介绍·······································································67
　　5.3.3 串行通信协议定制·······································································69
　　5.4 本章小结·····························································································71
　　结论 ··············································································································72
　　参考文献···········································································································73
　　攻读硕士学位期间承担的科研任务与主要成果············································78
　　致谢 ··············································································································79
　　作者简介···········································································································80

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工学硕士学位论文 智能自适应预测模糊控制温室系统研究电子书

工学硕士学位论文智能自适应预测模糊控制温室系统研究电子书