【正文】 .............................................................. 13 PID 參數(shù)的整定 ....................................................................................................... 14 PID 及其發(fā)展史的介紹 ............................................................................... 14 PID 控制器的參數(shù)整定 ............................................................................... 17 PID 參數(shù)整定的相關(guān)原則 ........................................................................... 17 內(nèi)蒙古科技大學(xué)畢業(yè)設(shè)計(jì) 說明書（畢業(yè) 論文 ） IV PID 控制算法及特點(diǎn) ................................................................................... 18 補(bǔ)水部分的設(shè)計(jì) ...................................................................................................... 21 硬件電路圖 .................................................................................................. 21 補(bǔ)水部分的工作原理 .................................................................................. 23 供水部分的設(shè)計(jì) ...................................................................................................... 25 硬件電路圖 .................................................................................................. 25 供水部分的工作原理 .................................................................................. 27 第四章 系統(tǒng)主要設(shè)備的選型及介紹 .................................................................................... 29 變頻器 ...................................................................................................................... 29 變頻器型號(hào)的選擇及外形、尺寸 .............................................................. 29 變頻器的接線方式 ...................................................................................... 30 變頻器內(nèi)部參數(shù)的設(shè)置 .............................................................................. 30 變頻器的工作原理 ...................................................................................... 33 儀表的選擇 .............................................................................................................. 34 液位傳感器的選擇 ...................................................................................... 34 壓力變送器的選擇 ...................................................................................... 36 電壓表的選擇 .............................................................................................. 37 其他電器的選擇 ...................................................................................................... 37 變壓器的選擇 .............................................................................................. 37 自耦變壓器的選擇 ...................................................................................... 38 隔離開關(guān)的選擇 .......................................................................................... 38 空氣開關(guān)的選擇 .......................................................................................... 39 萬能轉(zhuǎn)換開關(guān)的選擇 .................................................................................. 39 熱繼電器的選擇 .......................................................................................... 40 接觸器的選擇 .............................................................................................. 40 時(shí)間繼電器的選擇 ...................................................................................... 41 中間繼電器的選擇 ...................................................................................... 41 電位器的選擇 ............................................................................................ 42 啟動(dòng)按鈕和停止按鈕的選擇 .................................................................... 42 指示燈的選擇 ............................................................................................ 43 內(nèi)蒙古科技大學(xué)畢業(yè)設(shè)計(jì) 說明書（畢業(yè) 論文 ） V 電流互感器的選擇 .................................................................................... 43 電線及電纜的選擇 .................................................................................................. 43 第五章 結(jié)束語 ........................................................................................................................ 45 參考文獻(xiàn) .................................................................................................................................. 46 附 錄 ...................................................................................................................................... 48 附錄 1：電器的選型表 ................................................................................................... 48 附錄 2：儀表的接線端子 ............................................................................................... 50 附錄 3：補(bǔ)水部分硬件電路圖 ....................................................................................... 51 附錄 4 供水部分硬件電路圖 ....................................................................................... 52 感 謝 ...................................................................................................................................... 53 內(nèi)蒙古科技大學(xué)畢業(yè)設(shè)計(jì)說明書（畢業(yè)論文） 1 第一章 緒 論 變頻技術(shù) 研究背景 及意義 變頻技術(shù)的研究背景 隨著電力電子技術(shù)的 快 速發(fā)展，變頻器的功能也越來越強(qiáng) 大 。 PID controlling。 關(guān)鍵詞： 恒壓供水 ； 變頻器 ； PID 控制 ； 變頻調(diào)速；儀表內(nèi)蒙古科技大學(xué)畢業(yè)設(shè)計(jì) 說明書（畢業(yè) 論文 ） II Rural Water Supply Plant Electrical and Instrumentation Control System Design Abstract According to the requirement of the rural water supply, Design a set of electrical and instrument control of frequency conversion constant pressure water supply system. Frequency conversion constant pressure water supply control system by frequency converter, pressure sensor, pumping unit, Digital display instrument, etc. Water supply plant for dozens of villages in fangyuan 15 km outside the water supply, Water supply plant is posed of pressure and water well group, Source well group consists of three Wells. Put water Wells water injection pressure in the reservoir, Then the pump water from the reservoir through the frequency control of motor speed control for users.