基頻 base band; base frequency; baseband; basic frequency; frequency, fundamental; fundamental frequency; fundamental vibration; fundamentalfrequency; fundametal; group frequency
分量 分量weight 給足分量 give full measure; 分量給得不足 give short measure; 他這話說得很有分量。 what he said should not be taken lightly.; what he has said carries a lot of weight. 這本書的分量可不輕。 this book is quite heavy. 我相信她的話在校長面前有一些分量, 她有可能說服他。 i believe she has some influence with the headmaster -- she might persuade him.
Detection of the real - time fundamental negative - and positive - sequence components is the key of this technique 正負序基頻分量的實時快速提取,對于該方法的實際應(yīng)用具有十分重要的意義。
Cross - correlation method used in get based frequency part and realized balancing function . gao huawei ( mechanical design and theory ) directed by vice - prof 采用互相關(guān)原理提取振動信號基頻分量,計算振幅和相位,完成了動平衡功能。
Simulating shows , that the application of this new method can detect fundamental components effectively and quickly , and can eliminate the influence of frequency shift 仿真證明,該方法能夠迅速準確的提取基頻分量,并且具有能夠克服系統(tǒng)頻率偏移影響的優(yōu)點。
The algorithm principle , hardware design and software design of the scheme are proposed and experimentally demonstrated ; the main contents of this thesis are as follows : firstly , we study the principle of the fiber optic weak magnetic sensor based on magnetostrictive effect . after analyzing the characters of the magnetic field sensing signals , we know that the magnetic field sensing signals ’ fundamental component is proportional to input dc magnetic field 敘述了該方案的原理、軟硬件設(shè)計過程,并通過實驗進行了驗證,本文主要內(nèi)容如下:首先,研究了基于磁致伸縮效應(yīng)的光纖微弱磁場傳感器傳感原理以及輸出信號的特征,分析得出在干涉儀處于正交工作點時,傳感器輸出信號的基頻分量與被測直流磁場成正比關(guān)系。
In the thesis , a signal processing scheme of polarization - insensitive fiber optic michelson interferometric magnetic sensor is described : making the interferometer work near the quadrature with closed loop controlling working point method , the fundamental frequency component of the magnetic field sensing signals can be detected to measure the input direct current ( dc ) magnetic field by phase sensitive demodulation 本文主要介紹了偏振無關(guān)光纖michelson干涉型微弱磁場傳感器信號處理的方案:通過閉環(huán)控制工作點算法使干涉儀工作在正交工作點處,再利用相敏檢波算法提取傳感器輸出信號的基頻分量,以測量直流磁場的大小。