外文文獻(xiàn)翻譯--變頻器在供水控制系統(tǒng)的應(yīng)用-資料下載頁(yè)
2025-05-12 12:09本頁(yè)面
【導(dǎo)讀】的電能大多消耗在適應(yīng)供水量的變化而頻繁的開(kāi)停水泵中。這樣不但使電機(jī)工作。水資源嚴(yán)重浪費(fèi)，系統(tǒng)的維護(hù)、維修工作量較大。隨著高位生活用水和工業(yè)用水逐漸增多，傳統(tǒng)的控制方法已經(jīng)落后。由于機(jī)械裝置的故障多，可靠性差，給維修帶來(lái)很大的麻煩?？紤]選用單片機(jī)或PLC與變頻器結(jié)合為核心構(gòu)成的系統(tǒng)都能達(dá)到較。但在軟件設(shè)計(jì)上，PLC比單片機(jī)的編程更簡(jiǎn)潔、直觀；從硬件接。熟，小型PLC的成本與單片機(jī)相差無(wú)幾，由于要根據(jù)現(xiàn)場(chǎng)情況調(diào)整系統(tǒng)參數(shù)，PLC的軟件中時(shí)間參數(shù)的調(diào)整更簡(jiǎn)單，這樣更有利于售后服務(wù)人員掌握。加上PSW7調(diào)節(jié)器與WSP300壓力變送器，控制效果非常好，軟件設(shè)計(jì)簡(jiǎn)單，硬件接口簡(jiǎn)易可行、可靠性高，整個(gè)系統(tǒng)的性價(jià)比非常高。--PLC調(diào)控技術(shù)在水泵控制中的應(yīng)用。通過(guò)兩個(gè)繼電器互鎖保證它的安全與可靠。工作，使三號(hào)泵處于變頻工作狀態(tài)，如此類推。當(dāng)壓力達(dá)到調(diào)節(jié)器上限報(bào)警值時(shí)，都進(jìn)行低速啟動(dòng)，高速運(yùn)行以提高運(yùn)行效率。制的應(yīng)用將更加廣泛深入，甚至取代模擬控制。
【正文】 ant pressure precision is high, usually can control in the scope. C:The structure is simple, the operation is simple. The installment control system uses the integration rate to be high, necessary plan nimble diverse, obtains water pump movement each kind of bination by the programmable controller. The velocity modulation scope is broad, to water volume change adaptiveness. D:The service life is long, the automaticity is high, does not need the human to safeguard, maintains the quantity to be few. Above system the effect is remarkable in the actual application, if brings in PLC and the frequency changer the programmer the function integration, potential bees some specialpurpose frequency changers, such system reliability and the 陜西科技大學(xué) 6 toughness big enhancement, the application is simpler, the system total cost also can drop. May foresee: The future frequency conversion technology will be able to develop to the below direction: (1) high performance Thus including internal leveling circuit, the contravariant electric circuit all use the high frequency PWM electric circuit to cause the input, the output all are sine waves。 Uses the multidensification regarding the large capacity frequency changer and many machine is parallel。 Reduces frequency changer own loss, the realization high efficiency。 Realizes autotune or from the optimization, the remote control and controls far。 Even more faces the user, further enhances the workability and Maintainability: Turns towards, the featherweight development small, as well as reduces the cost and so on. (2) intellectualization Including two aspects: Reduces the hardware as far as possible, realizes the hardware software。 Uses the intelligent electric power electronic device and other intellectualized part. The integration is the intellectualized foundation. (3) entire digitization In recent years, each kind of modern control theory, the expert s ystem, the fuzzy control and the neuron control and so on all were the development hot spots, will cause the electric power electronic control technological development to a brandnew stage. Estimated the 21st century entire numerical control the application will be more widespread thoroughly, even will substitute for the simulation control. (4) systematization Frequency conversion technology development is inseparable from the development of related technologies, frequency conversion technology development in the 21st century is to grid, regulators, rely machine, electric motors, production machinery and control systems as a whole, from the system for consideration.
畢業(yè)設(shè)計(jì)相關(guān)推薦
鄂ICP備17016276號(hào)-1