（1. 中國民航大學(xué)工程技術(shù)訓(xùn)練中心，天津 300300； 2. 中國民航大學(xué)航空自動化學(xué)院，天津 300300）
摘 要：針對當(dāng)前風(fēng)機機組效率測量過程中由于電動機輸入功率和風(fēng)機輸出功率不是同步測量，當(dāng)風(fēng)機工況改變時會產(chǎn)生較大誤差的情況，提出一種利用無線傳輸來實現(xiàn)風(fēng)機機組效率同步測量的方法。建立風(fēng)機及電動機測量運算的數(shù)學(xué)模型，利用此方法設(shè)計風(fēng)機效率測試儀的硬件電路和軟件結(jié)構(gòu)，最后驗證該方法的測量準(zhǔn)確度和同步測量的可行性。
關(guān)鍵詞：風(fēng)機；效率測試；同步測量；無線傳輸
文獻標(biāo)志碼：A 文章編號：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
