數(shù)控專業(yè)畢業(yè)設(shè)計(jì)外文翻譯--wincc在供熱站恒壓供水監(jiān)控系統(tǒng)中的應(yīng)用-數(shù)控設(shè)計(jì)(完整版)
【正文】 outlet channel of pressure sensor installation will export water pressure signals are converted to electrical signals, send PLC fuzzy inference operation, the output control signals to the converter, regulating the operation of pump motor speed, until the actual elimination of hydraulic pressure and set the deviation, constant voltage supply. Programmable controller can control pumps Kai stopped. When the system started working, inverter control from start on 1st pump frequency operation. If users increased consumption of the converter output frequency up to 50 Hz, the pressure will still be less than the set value, then after some time delay, on the 1st of the pump switching frequency operation。 Set time will lead to excessive speed converter running in the system bee regulate slow, delayed response, contingency ability is poor. Yi system at the state shortterm instability. To protect the converter is not tripping, the scene of many of them using converter increases deceleration time setting too long, the problems they bring very easily be the appearance of the normal equipment and hide, but the converter operating in lessthanoptimal state. So the scene when used according to the load driven by a different nature, testing out the permission of the shortest load increases deceleration time, setting. For the pump motor, plus deceleration time in the choice between seconds. 畢業(yè)設(shè)計(jì)（論文）外文翻譯 外文翻譯 Wincc 在供熱站恒壓供水監(jiān)控系統(tǒng)中的應(yīng)用 1. 恒壓供水基本工作原理 系統(tǒng)采用變頻調(diào)速方式自動(dòng)調(diào)節(jié)誰(shuí)笨點(diǎn)擊轉(zhuǎn)速或加、減泵?？刂茩C(jī)組運(yùn)行、故障的自動(dòng)停機(jī)和報(bào)警操作。若用戶用水量增加變頻器的輸出頻率上升到 50Hz 水壓仍達(dá)不到設(shè)定值，則將 2 號(hào)泵切換為工頻運(yùn)行 。再根據(jù)極大極小推力合成規(guī)則求出輸出語(yǔ)言變量論域上的模糊集合 U： 最后對(duì) U 采用加權(quán)平均法進(jìn)行解模糊，將模糊量 U 轉(zhuǎn)換成精確量 u，上述 過(guò)程是離線進(jìn)行的，最終得到模糊控制查詢表，如圖 2 所示。 變頻恒壓供水系統(tǒng)的參數(shù)選取 合理選取壓力控制參數(shù)，實(shí)現(xiàn)系統(tǒng)低能耗恒壓供水。對(duì)于水泵電機(jī)，加減速時(shí)間的選擇在 秒之間。兩者如何選擇，我們來(lái)簡(jiǎn)單分析一下管網(wǎng)最不利點(diǎn)壓力恒定時(shí)。 程序設(shè)計(jì) RSLogix5000 是支持 Logix5000 系統(tǒng)控制器的編程軟件，程序用梯形圖語(yǔ)言編寫，包括水泵啟動(dòng)和切換主程序、 PI 控制子程序、模糊控制子程序和故障報(bào)警子程序，當(dāng)采樣時(shí)間到時(shí)， PLC 采集水壓信號(hào)，并與給定信號(hào)比較得到誤差 e，若 e=e0(e0 為 PI 和模糊控制切換閥值 )，則進(jìn)入 PI 控制子程序；若 ee0，則進(jìn)入模糊控制子程序。繁殖托用戶用水量減少，則依照“先啟后?！痹瓌t一次將水泵切除 如此反復(fù)循環(huán)，實(shí)現(xiàn)系統(tǒng)的恒壓供水。在輸煤廊中控制給煤量和給煤速度，檢測(cè)給煤質(zhì)量（煤的粉碎成都和含雜質(zhì) 量）。調(diào)節(jié)器、壓力傳感器、液位傳感器、動(dòng)力控制線路等組成，用戶通過(guò)上位監(jiān)控系統(tǒng)或控制柜面板上的指示燈、按鈕、轉(zhuǎn)換開(kāi)關(guān)來(lái)了解和控制系統(tǒng)的運(yùn)行。畢業(yè)設(shè)計(jì)（論文）外文翻譯 外文原文 Wincc in heating supply stapply stations Constant Pressure Monitoring System Application onstant voltage supply basic working principle System uses Automatic Frequency Control regulation or pump motor speed. Plus or minus is primarily by the Frequency Control regulator,pressure sensors,liquid level sensor pow
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