amplitude filter 中文意思是什麼
amplitude filter
解釋
振幅濾光器，振幅濾波器-
In designing analogic circuit, we adopt programmable filter max262 to meet the system ' s command. after the step, we can make the signal ' s frequency width is wider and noise level is lower. to make the signal ' s amplitude to meet the analogic to digital device ' s command, we adopt the max551 to finish the gain control
在模擬電路部分，採用可編程濾波器max262 ，這樣就滿足了該數據採集裝置所採集的信號的頻率范圍較寬以及具有較低的噪聲水平的要求，為了使采樣到的信號的幅度滿足後面a d轉換器的要求，採用max551對采樣到的信號進行調理（增益控制） 。 -
The nucleus is the software in the design and realization of virtual instruments. we use the design method of module and use many papers to describe the whole building process of the typical signal generation module, date handling module, date reading and writing module, resultdemonstrate module. as the conclusions, we also offer the panels and the diagrams of virtual signal frequency spectrum analytical instrument, virtual butterworth filter, virtual signal generation instrument, virtual integrator and differentiator regulator and amplitude modulation wave counter modulation instrument
本文採用模塊化設計方法，詳細描述了典型信號生成模塊、數據處理模塊、數據讀取和存儲模塊、顯示模塊等軟體開發的全過程，分析、解決了設計及實現過程中出現的問題，並給出了已實現的虛擬信號頻譜分析儀、虛擬巴特沃斯濾波器、調幅波解調器、虛擬信號發生器、虛擬積分器和微分器等實驗教學用虛擬儀器的前面板圖和程序流程圖。 -
Pwm converter has low efficiency at light loads and high amplitude harmonic. on the other hand, the control circuit and filter for pfm are much complex
Pwm調制模式的spic在輕載下效率較低，控制脈沖諧波峰值較大; pfm控制電路較為復雜，后續濾波器設計困難。 -
Secondly the detection precision is only related to the synchronization phase but not to the amplitude of the mainline voltage because that it uses the optimized pulses synchronous with the mainline voltage as modulation signals. thirdly it decreases the requirement of the input low pass filter and eliminates the error resulting from the direct component and even harmonics of load current. the most significant merit is that it can eliminate the effect of a few low order odd harmonics and the detecting circuit is easy to be implemented
模擬和實驗結果表明該方法的主要優點有：不需使用乘法器進行信號調制，調制信號採用與電網電壓同步的優化特定脈沖，其檢測精度只與同步相位有關，而與電網電壓幅值無關；降低了對輸入低通濾波器的通頻帶要求，直流和偶次諧波分量對檢測精度沒有影響；突出的優點是可以消除有限個低奇次諧波對檢測結果的影響。 -
We select fpga of type xc3s200 as hardware to design the coder and display the hardware resources inside, moreover study the method and steps of designing dsp, based on fpga, by using system generator, finally, it emphasizes the design process of multi - band excitation vocoder. we can work out the module of high pass filter and the module of low pass filter, module of divide frame, module of keynote rough estimate, module of keynote fine estimate, module of band - separated v / u judgment / verdict and module of band - separated amplitude estimate, by using simulink, ise and system generator
本文選用型號為xc3s200的fpga作為設計編碼器的核心硬體，介紹了其內部所含的硬體資源，並研究了利用systemgenerator基於fpga設計dsp的方法和步驟，最後，本文把重點放在多帶激勵語音編碼器的設計上，利用simulink ， ise和systemgenerator分別設計其中的高通低通濾波器模塊、分幀疊加模塊、基音粗估模塊、基音精細估計模塊、分帶v / u判決模塊、分帶幅度估計模塊。 -
This approach is called fas. this approach uses characteristics of trigonometric function, respectively computes the amplitude of fundamental component and inactive power current separates them by low pass filter and acquires and inactive power current
該方法利用三角函數的特性，對畸變電流中的基波成分和無功電流分量的振幅分別進行計算，然後經過低通濾波器把它們分離出來，最後得到基波有功和無功電流分量。 -
Realization of the wide - band shaping filter in baseband is carefully analyzed, and then a low - cost realization method is brought forward. furthermore, through shaping filters, i / q route self - synchronization and compensation and revise of the nonlinearity and the imbalance of amplitude and phase of the modulation circuits are advanced
分析了基帶寬帶數字成形濾波器的實現難點，提出了低代價的實現方法，並利用成形濾波器解決了調制端i / q自動同步，調制電路的各種非線性和幅相不平衡的補償校正等問題。 -
The amplitude discrimination circuit, the filter circuit and the amplifying circuit are designed to transform ac analog signal that the eddy current sensor output to dc analog signal, thus, the dc analog signal can be received by ad converter
傳感器輸出的測量信號是中頻的交流模擬信號，在下位機系統設計了鑒幅、濾波、放大電路將測量信號轉化為模數轉換器可以接受的直流信號。 -
The device is also widely used to measure the amplitude frequency characteristic of instrument in the tv - broadcastiong field, such as filter, amplifer, ect
該儀器主要針對高頻調諧器的測量，也可用於廣播電視領域中濾波器件、放大電路等的生產測試。 -
The purpose of this paper is to resolve some key technologies of the amplitude - modulation inductive displacement transducer signal processing circuit with nanometer resolution, such as the design of high stability signal generating circuit ; the technology of high precision digital phase - sensitive detection circuit ; the technology of digital filter and linearization, etc
本文主要研究調幅式電感位移傳感器精密測量系統中涉及的高精度載波信號發生技術、高精度數字相敏檢波技術、數字濾波及線性擬和等關鍵技術，目的是進一步改善調幅式電感位移傳感器精密測量系統的測量精度，適應納米級測量的要求。 -
Therefore the dynamical characteristic is acted as detected parameter for fractured detection ( primary amplitude secondary frequence ). and the amplitude of mean sguare and central frequence are acted as evaluational parameter, based on the those studies, the new ideas is put forward that fractured azimuth is dected by lateral difference and fractured density is dected by vertical difference for three facters of fracture, wavelet acted as analysis tool and direction by wave field characteristic applied the multiple scale edge dectection and self - adaptive edge detection into the detection theory of seismic fractured azimuth, also put forward the wavelet different scale filter method of the fractured azimuth detection
因而，確定了主要以振幅，其次是頻率的地震波動力學特徵作為裂縫檢測的被檢參數和均方振幅和中心頻率作為檢驗檢測結果正確與否的評價參數。在上述研究基礎上，針對裂縫的三要素，提出通過橫向求異檢測裂縫方位和縱向求異檢測裂縫密度的新思想。並以小波作為分析工具，以潛山波場特徵作指導，將數字圖像處理中的多尺度邊緣檢測和自適性邊緣檢測引用到地震裂縫方位檢測中來，並提出了小波變尺度濾波法新的裂縫方位檢測法。 -
By setting a amplitude filter ( module ) with certain transmission function in arrayed waveguides, we design optic signal add / minus. by changing the length of center arrayed waveguides, we design phase foil filter of awg ultimately, the present stage work are summarized and some future work are discussed
通過在陣列波導嵌入一定傳遞函數的振幅型濾波片（模片） ，設計了awg型光信號加減器；通過改變中心陣列波導的長度，設計了awg型相襯濾波器。 -
A kind of nonlinear differential filter for the phase compensating, and the other filter basing on the phase and amplitude compensating are introduced in the paper. the filter designed is simulated by matlab and debugged in scm
為此研究了非線性微分校正，能產生相位超前，用於補償濾波器的相位滯后且不增加高頻增益，后又提出基於相位與幅值補償的濾波器的設計。 -
This paper presents a model of cosine basis functions neural network based on bp algorithm, discusses the relation between the algorithm of neural network and amplitude - frequency characteristic about the linear phase fir filter, introduces the convergence condition of neural network algorithm, and studies the optimal design example about the high - order fir double - band - pass filters
提出了一種基於bp演算法的正弦基函數神經網路模型及演算法的收斂條件，研究了該神經網路演算法與fir線性相位濾波器幅頻特性的關系，給出了高階雙通帶濾波器的優化設計實例。 -
In addition, according to the characteristics of wavelet packet transform and that of conjugate quadrature filter bank, we bring forward the ameliorated arithmetic of wavelet packet. the amplitude of time - varying harmonics can be measured accurately through the ameliorated arithmetic
另外我們結合小波包分解和正交鏡像對稱濾波器的特點，提出了小波包的改進演算法，利用該演算法可對時變諧波信號的幅值進行比較精確的分析。 -
This thesis begins with hfc network theory and docsis, analyses modulation / demodulation process of data communication in hfc. then, several theories are analysed including qam ( quadrature amplitude modulation ), nyquist root square filter, fec ( forward error correction ), map ( bandwidth allocation map ). and digital signal transmission involved the other important international standard ? itu - t j. 83 annex a / b, is discussed
本文從hfc網路理論和docsis協議入手，分析了hfc數據通信的調制解調過程，對qam調制、奈奎斯特均方根濾波器、前向糾錯（ forwarderrorcorrection ，簡稱fec ） 、 map通信等進行了闡述；還從中探討了電纜數據機需要用到的另一個國際標準ituj . 83annexa / b所設計的mpeg信號的數字傳輸。 -
The mechanism for the fault of the working state of anode is studied in this paper. the spectrum of the sampled signals is got using the technique of amplitude - frequency analysis, then the corresponding iir butterworth digital filter is designed to separate the low - frequency part and the high - frequency part using digital filter design technique
利用頻譜分析技術對采樣信號進行頻譜分析，並採用數字濾波器設計技術設計了相應的r型butterworth數字濾波器，將信號中的低頻信號和高頻組分進行分離，從中提取出與陽極工作故障有關的特徵量。 -
For successfully applying ae on detecting crack during fatigue test, noise restraining, signal locating and the building of ae features database has been deeply investigated in this thesis. in brief, the following are the primary contents : by analyzing the source of noise, several methods of restraining the noise are proposed : space filter, amplitude filter, bp filter, parameters filter, hit time setting and illustrate analysis
本文基於將聲發射技術應用到直升機部件疲勞裂紋檢測中，對噪聲的抑制、聲發射源定位的問題以及聲發射特性典型參數數據庫的構造進行了研究，主要工作如下： ?分析噪聲的來源，對如何抑制環境噪聲進行了研究。 -
The results of the test demonstrated that the system has a good performance in the linearity, dynamic scope, isolation, coherence of the amplitude. the group delay of the upmixers is 2ns, which is better than other domestic manufactures. because the inconsistency between the isolation and the phase coherence, and the error of the test method, we haven ’ t gotten the good performance of the phase coherence. the next work is improving the restrain of the filter to the lo signal and the phase test methods
在單路發射通道上，群時延達到了2ns ，優于國內很多產品。三路通道之間的相位一致性由於測試方法的誤差以及隔離度指標的牽引作用，我們不能調試達到非常好的在相位一致性指標，再下一輪的工作中必須提高濾波器對本振信號的抑制度，改進相位測試方法以達到指標要求。
分享友人