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毕业设计论文PLC在变频调速恒压供水系统中应用.doc

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PAGE 目 录 TOC \o 1-3 \h \z \u HYPERLINK \l _Toc187552743 摘要..........................................................................1 HYPERLINK \l _Toc187552744 关键词........................................................................1 HYPERLINK \l _Toc187552746 Abstract.......................................................................2 HYPERLINK \l _Toc187552749 Key words.....................................................................2 HYPERLINK \l _Toc187552750 1 绪论........................................................................3 HYPERLINK \l _Toc187552751 1.1 变频恒压供水产生的背景和意义............................................3 HYPERLINK \l _Toc187552752 1.2 变频调速技术的特点及应用................................................5 HYPERLINK \l _Toc187552753 1.3 可编程序控制器的特点及应用..............................................5 HYPERLINK \l _Toc187552754 1.4 本文的主要研究内容......................................................7 HYPERLINK \l _Toc187552755 2 变频恒压供水系统简介........................................................8 HYPERLINK \l _Toc187552756 2.1 供水系统的基本特性......................................................8 HYPERLINK \l _Toc187552757 2.2 变频调速的节能、调速原理.................................................8 HYPERLINK \l _Toc187552758 2.3 变频调速恒压供水工况分析与能耗机理分析 .................................10 HYPERLINK \l _Toc187552759 2.3.1 管路水力损失及性能曲线..............................................10 HYPERLINK \l _Toc187552760 2.3.2 水泵工作点的确定和调节..............................................10 HYPERLINK \l _Toc187552761 2.3.3 水泵变频调速节能分析................................................ PAGEREF _Toc187552761 \h 12 HYPERLINK \l _Toc187552762 2.3.4 调速范围的确定...................................................... PAGEREF _Toc187552762 \h 13 HYPERLINK \l _Toc187552763 2.4 变频恒压供水系统的特点................................................. PAGEREF _Toc187552763 \h 13 HYPERLINK \l _Toc187552764 3 变频调速恒压供水系统硬件的设计............................................. PAGEREF _Toc187552764 \h 15 HYPER
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