（1. 中國(guó)民航大學(xué)工程技術(shù)訓(xùn)練中心，天津 300300； 2. 中國(guó)民航大學(xué)航空自動(dòng)化學(xué)院，天津 300300）
摘 要：針對(duì)當(dāng)前風(fēng)機(jī)機(jī)組效率測(cè)量過(guò)程中由于電動(dòng)機(jī)輸入功率和風(fēng)機(jī)輸出功率不是同步測(cè)量，當(dāng)風(fēng)機(jī)工況改變時(shí)會(huì)產(chǎn)生較大誤差的情況，提出一種利用無(wú)線傳輸來(lái)實(shí)現(xiàn)風(fēng)機(jī)機(jī)組效率同步測(cè)量的方法。建立風(fēng)機(jī)及電動(dòng)機(jī)測(cè)量運(yùn)算的數(shù)學(xué)模型，利用此方法設(shè)計(jì)風(fēng)機(jī)效率測(cè)試儀的硬件電路和軟件結(jié)構(gòu)，最后驗(yàn)證該方法的測(cè)量準(zhǔn)確度和同步測(cè)量的可行性。
關(guān)鍵詞：風(fēng)機(jī)；效率測(cè)試；同步測(cè)量；無(wú)線傳輸
文獻(xiàn)標(biāo)志碼：A 文章編號(hào)：1674-5124（2015）12-0091-04
An improved method for fan unit efficiency measurement
REN Renliang1， HOU Junyang2， HU Weigang2
（1. Engineering and Technology Training Center，Civil Aviation University of China，Tianjin 300300，China；
2. Automation Institute of the Civil Aviation University of China，Tianjin 300300，China）
Abstract: In order to overcome large errors caused during the asynchronous measurement of motor input power and fan output power when the working condition of the fan changes， an improved method has been proposed to measure the efficiency of fan units through wireless transmission. Input and output mathematical models has been established. Hardware circuits and software structures were designed for fan measurement testers based on this method. At the end of the paper， the method was validated as accurate and feasible.
Keywords: fan； efficiency measurement； synchronous measurement； wireless transmission
