fft analyzer 中文意思是什麼
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A fft spectrum analyzer was used to measure the resonant frequency
試驗時採用六種實大尺寸試材，共振頻率之測定系利用fft頻譜分析儀。 -
The various functions inside the virtual spectrum analyzer introduced in the paper is time domain wave analysis, fft transfer, ifft transfer, cross analysis, and so on, which are all described in function controls. finally, this paper introduce the assemble of intelligent controls - oriented virtual instrument. and use classical signals and industrial practices to demostrate the accurate of virtual spectrum analyzer
本文介紹的智能控制項化頻譜分析儀所具備的功能，有信號的時域分析、 fft變換以及ifft反變換、信號的微積分運算、信號的頻譜分析、信號自功率譜密度函數計算、信號互功率譜密度函數計算、頻率響應函數計算和相干函數計算，都是集成在功能控制項裏面的。 -
At present the identification signal of rolling bearing is based on analog monitoring system composed of analog instrument such as fft analyzer, amplitude analyzer and so on. the system has the shortcoming as follows : not enough friendly user interface, unitary function, under abundant analytical contents, poor generality, long developing period, high cost and so forth
目前對滾動軸承信號識別主要採用模擬監測系統，系統均由模擬量儀器組成，如fft分析儀、幅值分析儀電平記錄儀等，系統存在操作界面不夠友好，功能單一，分析內容欠豐富、通用性差、開發周期長、成本高等缺點。
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