外文翻譯--基于虛擬儀器技術(shù)的風機性能自動測試系統(tǒng)-文庫吧資料
2025-07-31 20:13本頁面
【正文】 puter to thoroughly break down the mode that the traditional instruments are defined by the manufacturers, however the users can not change. With VI, users are provided a space to exert their capacity and imagination adequately. It is the user, not the manufacturer, who can design their own. instrument system at their pleasure according to personal need. In the virtual instrument system, the hardware only provides a solution to the input and output of signals, however the software is the key to the whole system. Any user may modify the software to change, increase or decrease the functions and scales of the instrument system[4, 5].As a result, the system can not only automatically acquire, process testing data and express the final results in suitable forms but also control and adjust different working loads. The whole system is friendly in interface, easy in operation and plete in functions. The experiment results have shown that the stability of the experiment process has increased, the reading error was avoided and the measurement accuracy and experiment efficiency were improved. The system has been widely applied to many fan production factories and research institutes.2 Hardware design of the systemHardware of this system, which is the basis of signal acquisition, conversion, enhance and processing, consists of fan, motors, wind pipe, sensors, puter, data acquisition board, frequency conversion governor, etc. The block diagram of system structure is shown in .Among those ponents, puter and plugin DAQ board play an important role in the system. With the high performance DAQ board, not only data acquisition, A/D conversion but also frequency control, step motor control etc are realized. Considered of the technical indexes such as samplingfrequency, accuracy, A/D amp。 autotesting。Autotesting system for fan performance basedon virtual instrumentation technologyAbstract: In accordance with the present status of measurement of fan performance with burdensome in labors, low inaccuracy and backward in testing method, autotesting system for fan performance based on Virtual Instruments(VI)technology was developed. The system integrated sensor technology, puter technology and measurement a result, the system can not only automatically acquire, process testing data and express the final results in suitableforms but also control and adjust different working loads. The whole system is friendly in interface, easy in operation andplete in functions. The experiment results showed that the stability of the experiment process increased, the readingerror was avoided and the measurement accuracy and experiment efficiency were improved. The system has been widelyapplied to many fan production factories and research institutes.Key words: fan。因此，在精度和效率的測試是在很大程度上得到改善。圖25 結(jié)論從所有上述情況，整個系統(tǒng)是一個很完善的界面，操作方便和全面的功能，可廣泛應(yīng)用于科學科研院所及工廠等。所示圖2 ，每一個點是數(shù)值的測試信號， 并且接駁線是表現(xiàn)擬合曲線基于最小二乘法。整個系統(tǒng)是完善便于操作的。 因此，需要測試報告，其中包括風機性能曲線能展示和打印。此外，數(shù)據(jù)存儲，打印輸出， 輸入等，都實現(xiàn)了。此外，基于最小二乘法的風機性能曲線可裝有自由挑選合適的模塊?？梢暬目刂疲缱鳛殡娫撮_關(guān)，測試起動開關(guān)，操作模式選擇幻燈片，風扇轉(zhuǎn)速選擇幻燈片，并進行實時在線數(shù)字＆波形顯示的信號，送到在前面板上，為用戶操作此系統(tǒng)交換方便。2 ）數(shù)據(jù)采集及控制參數(shù)設(shè)定： 在這個系統(tǒng)中，采樣通道，控制通道，采樣率，信號輸入/輸出限制等。 基于模塊化的設(shè)計方法，程序， 模塊設(shè)計。該軟件是由LabWindows / CVI的這是一個綜合性的ANSI C環(huán)境工程師和科學家創(chuàng)造虛擬儀表應(yīng)用 。 均方誤差。整體壓力，靜態(tài)壓力，功率和效率，多項式秩序。格式函數(shù)polyfit具體內(nèi)容如下：這項議內(nèi)容的目的，功能，是要找到合適系數(shù)，即最能代表多項式擬合數(shù)據(jù)點（ x ， y
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