輸入通帶 的英文怎麼說
中文拼音 [shūrùtōngdài]
輸入通帶
英文
input passband-
With the established rf front - end system simulation platform, adding the digital modulated baseband signal, this paper simulated the multifold digital modulated signal ’ s transmission, such as 2ask, qpsk, and 16qam. then researches of power compression and phase noise of local oscillation influence the bit error ratio for different modulated system. the designing is satisfied multifold functions request with the high - powered and integrated broadband rf front - end
隨后在建立的寬帶射頻前端通用模擬平臺上，加入基帶數字調制信號，對多種數字調制格式的信號在該通用平臺上的傳輸作了研究，模擬了2ask 、 qpsk和16qam等調制格式信號的發射與接收，研究了功率壓縮和本振相位噪聲對不同調制的誤碼率影響，實現了滿足多種功能要求的寬帶高性能綜合射頻前端的設計。Based on analysis and compare of all kinds of precept - sorting of feature of plastic product for the different structural plastic product, a 3d feature library of plastic product was built on the platform by integrating feature - modeling technique with parametric technique. the feature schleps its information of non - geometry by database - externed technique of the entity. after building the database of plastic material, the module of choice of plastic material is developed by technology of odbc
針對不同結構類型的塑件，在全面分析、比較塑件特徵分類的各種方案的基礎上，採用三維特徵建模技術和參數化技術，建立了注塑產品的三維特徵庫；應用實體擴展數據庫技術，使特徵攜帶非幾何信息；再在建立塑料物性數據庫的基礎上，採用odbc技術，開發了塑料材料選擇模塊；通過塑件特徵的調用和人機交互輸入參數的方法進行塑件三維造型，再把塑件的三維實體和塑件的非幾何信息結合起來，生成塑件全信息模型。In this paper, the drive theory of the large ratio friction transmission is studied ; a new type elliptical cam wave generator is designed ; the large ratio friction transmission prototype is designed and manufactured ; based on the ansys finite element method software, structure of the elliptical cam is analyzed ; precision index of the manufactured large ratio friction transmission prototype, such as transmission accuracy, least step, stability of the least step, load capacity is measured by the absolute rotary encoder. by analyzing the measurement data and research content, it is think that the new elliptical cam wave generator could overcome a good many problems brought by processing errors, facilitate size precision adjustments, input moment can be achieved in the form of a pure force couple importing ; through this study, " the large ratio friction transmission prototype " could apply in practical engineering basically
本文研究了大速比摩擦傳動的傳動理論;設計了新型橢圓凸輪波發生器，設計製作了大速比摩擦傳動樣機;用軟體ansys對所設計的橢圓凸輪結構進行了有限元分析;用19位絕對式編碼器測試了大速比摩擦傳動機構的傳動精度、最小步距、最小步距的穩定性以及帶負載能力等各項精度指標;對測量數據和研究內容進行了歸納和整理，認為新型橢圓凸輪波發生器克服了加工誤差帶來的諸多問題，新型橢圓凸輪波發生器可以進行尺寸精度調整，能夠達到輸入力矩以純力偶的形式輸入;通過本項研究，基本可以使「大速比摩擦傳動機構」在工程中得以應用。The process of producing the audio tapes is as follows : first, master s teachings are translated into korean appropriate for radio performers to read. second, the mother tape of master s lecture is input into a computer system and cut into many parts, each of an appropriate length usually 1 - 3 sentences. third, while listening to each part of the tape, a radio performer reads the korean translation for the computer system to record
這種錄音帶製作過程如下：首先將師父的教理翻譯成韓文，以便播音員能夠朗讀其次，將師父講經的錄音母帶dat輸入電腦系統，並進行斷句，通常一至三句話一段第三，聽完每一段師父的講經后，播音員便朗讀韓文的譯文，讓電腦系統將譯文錄下來第四，用電腦來剪接錄音帶，並配上音樂最後，將剪接好的錄音帶送到工廠製作生產。Under windows nt and labview development environment, using the linear fit module, exponential fit module > general polynomial fit module of labview to design a method for fitting the experiment data, the results of curve fitting indicate that the purpose of general polynomial fitting is better than the rest. separating the equivalent input impedance of magnetostrictive transducers without stimulate current from input impedance of it with stimulate loop based on the results of curve fitting, and determining the syntony frequency and electric simulation network parameters of magnetostrictive transducers by this input impedance. finally, with labview network functions, realizing magnetostrictive transducer electric simulation system based on web server and discussing a scheme for this system network by datasocket. the method of this paper can more accurately determine the syntony frequency and electric simulation network parameters of magnetostrictive transducers than the testing method of syntony & anti - syntony. at the same time, discussing virtual instrument measurement system and how to realize magnetostrictive transducer electric simulation network system by labview network functions of network virtual instrument measurement development environment
在windowsnt系統環境和labview虛擬儀器技術開發平臺下，首次利用labview中的直線擬合模塊、指數擬合模塊以及多項式擬合模塊，設計了一種對實驗所得數據進行曲線擬合的方法，對三種擬合方法進行了比較，曲線擬合結果表明，多項式擬合方法相對于其它兩種擬合方法效果更好；根據曲線擬合的結果可從帶激勵線圈的磁致伸縮換能器的輸入阻抗中分離出磁致伸縮換能器鐵芯在無激勵電流時機械振動形成的等效輸入阻抗，並由此輸入阻抗確定了磁致伸縮換能器的諧振頻率及其電氣模擬網路參數；最後通過labview提供的網路功能，實現了基於web服務器的磁致伸縮換能器電氣模擬虛擬儀器測試系統，並探討了通過datasocket技術實現該系統網路化的方案。Heating boilers - part 6 : heating boilers with forced draught burners - specific requirements for the domestic hot water operation of combination boilers with atomizing oil burners of nominal heat input not exceeding 70 kw
供暖鍋爐.第6部分:帶有強制通風燃燒器的供暖鍋爐.帶有公稱熱輸入功率不超過70kv的自動燃油燃燒器的組合鍋爐家用熱水供暖操作的特定要求The control tactics of space voltage vector are investigated, and the simplified algorithm which judges the sector location of reference vector and calculates switch operation time is put forward. by analyzing the current hysteresis control, the relation between switch frequency, and hysteresis bandwidth and input inductance of pwm rectifier is deduced. by applying instantaneous power theory, the principle of pwm rectifier power control is analyzed, and the direct power control by matlab toolbox through estimating active power and reactive power with virtual flux is realized, and the simulation results prove that it is correct
對常用空間電壓矢量控制策略進行分析，提出了給定參考矢量所在區間判斷的簡化方法，以及電壓矢量作用時間的求取方法；分析了電流滯環控制策略，推導出開關頻率與滯環帶寬以及整流器輸入電感之間的關系；應用瞬時功率理論分析pwm整流器功率控制原理，通過虛擬磁鏈估計有功功率和無功功率，用matlab實現了直接功率控制，並驗證了該控制方法的正確性。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。It takes a plain javacc grammar file as input and automatically generates the following : a set of syntax tree classes based on the productions in the grammar using the visitor design pattern ; two interfaces visitor and objectvisitor ; two depth - first visitors depthfirstvisitor and objectdepthfirst ; and a javacc grammar with the proper annotations to build the syntax tree during parsing
它把普通的javacc語法文件作為輸入並自動生成下列各項：基於語法中的生成的一組語法樹類（使用visitor設計模式） ；兩個介面（ visitor和objectvisitor ） ；兩個深度優先訪問器（ depthfirstvisitor和objectdepthfirst ） ；和一個帶正確注釋的javacc語法（用於在解析期間構建語法樹） 。The tbc algorithm simulates that wave near the boundaries is plane wave, and its amplitude and direction are decided by trial and error. in this thesis, the operation principle of an awg is introduced and the structure parameters of 8x8 awg with its central wavelength 1550. 12 / 7 / n and channel spacing 3. 2nm are designed by discussing the crosstalk to neighboring waveguide, the insertion losses and losses equal, etc. this thesis employs the waveguide theories to analyze the slab waveguide and the arrayed waveguide, and offers the distributions of stable optical fields
本文旨在設計一個中心波長為1550 . 12nm 、波長間隔為3 . 2nm的8 8awg波分復用器，通過綜合考慮相鄰波導間的最大串擾、插入損耗、通帶寬度以及各通道損耗均勻等指標來設計、優化awg的各個結構參數，如輸入、輸出波導和波導陣列中相鄰波導的間隔，平板波導的聚焦長度，波導陣列中相鄰波導的長度差等。Become a kind of new electronics circuit - current - mode circuit. it is replacing the traditional design method of the voltage - mode in the high frequency high - speed signal processing realm 。 this thesis mainly discussed the modified second - generation current conveyors based on the current - mode kinds of new cuicuit components, they are stronger modified standard current - mode parts in fuctions on this foundation. mainly including the modified differential difference current conveyor ( mddccii ) 、 the fully balanced second generation current conveyor ( fbccii ) 、 ( full balances ) four - terminal floating nullor ( fbftfn ) and the current differencing buffered amplifier ( cdba ), they are all function very strong standard current - mode parts, they all can provide some circuit functions of better than general operation amplifier, because they have the voltage importation and the current importation, therefore use it since can carry out the voltage - mode signal processing circuit expediently, can also carry out the current - mode signal processing circuit expediently, and have to increase the benefit bandwidth to accumulate more widely than the voltage - mode, but have their advantages more according to the current - mode filter of the modified current conveyor, because it constitutes in brief, the filter wave function is stronger and they are better than in general use operation amplifier of many advantages, be easy to composing for example 、 high speed 、 frequency bandwidth 、 the power supply voltage requests low 、 consume small, the impedance is different from etc. advantages, otherwise they have biggish dynamic range, and flexible circuit synthesize, so they are the best active parts
從第二代電流傳輸器ccii入手，重點研究了以下幾種改進型的第二代電流傳輸器:改進的差動差分電流傳輸器mddccii 、全平衡第二代電流傳輸器fbccii 、多輸出四端浮地零器ftfn 、全平衡四端浮地零器fbftfn 、電流差分緩沖放大器cdba的電路結構及其模型。然後在此基礎上系統地研究了基於這幾種改進型的第二代電流傳輸器的濾波器的設計方法，主要方法和結果如下:利用mddccii設計了差分式連續時間電流模式低通、帶通濾波器;電流模式跳耦結構考爾低通濾波器;利用fbccii設計了帶通二階節濾波器及電流模式雙二階通用濾波器;設計了基於多輸出端ftfn的電流模式二階通用濾波器電路;通過數字化開關選擇的基於fbftfn的電流模式通用濾波器;設計了基於最少個數電流緩沖放大器（兩個cdba ）的多功能通用電流模式濾波器及其在非理想因素情況下分析。設計濾波器的主要方法是採用級聯設計、運算模擬（信號流圖法）和反饋設計（跳耦法） 。The bottleneck of hybrid filter banks adc system is that it cannot sample directly higher radio frequency signal because of lower analog input bandwidth of its adc. in order to remove it, a kind of downsampler model based on nyquist and bandpass sampling theorem is presented, analyzed and proved in time and frequency domain, in addition a downsampler is designed according to the model. on the basis of hybrid filter banks adc system, a class of high speed hybrid filter banks adc system is proposed
針對混合濾波器組adc系統因其adc模擬輸入帶寬低而不能對頻率較高的射頻模擬信號進行模/數轉換的瓶頸，作者提出了一種基於nyquist采樣定理和帶通采樣定理的抽取器數學模型，對該數學模型進行了時域、頻域的分析證明后，設計了一種基於該數學模型的sha抽取器，進而在混合濾波器組adc系統的基礎上，提出了高速混合濾波器組adc系統。Heating boilers - heating boilers with forced draught burners - specific requirements for the domestic hot water operation of combination boilers with atomizing oil burners of nominal heat input not exceeding 70 kw
供暖鍋爐.帶強制通風燃燒嘴器的供暖鍋爐.標稱熱輸入量不超過70kw的用霧化油燃燒爐的組合式鍋爐的家用熱水供熱特定要求In this dissertation, a kind of linear time invariant systems with unmodeled dynamics and nonlinear uncertainties are considered by using backstepping approach and variable structure control algorithm. also another kind of linear time varying systems are studied based on the same method
本文主要利用backstepping方法與變結構控制方法，研究了有未建模動態及不確定非線性項的線性時不變系統，以及輸入通道帶有干擾的線性時變系統的控制器設計問題Midi hdd jukebox is used special for play midi, mp3, mtv songs. operating can select songs by number or menu ways. whole machine has had include a 80g hdd with 10000 20000s multi - language midi songs in it. saving enough space in the hdd yet. user self can add liking mtv karaoke songs dat vob form into its hdd from vcd dvd disc by ext - dvd - rom device, another, machine support host usb2. 0 port, same can add multi - media songs mpeg1 2 4, mp3 form into hdd of jukebox from usb flash card or extra portable - hdd. and use remote controler to edit user song name with english or chinese, set option samtime, etc
Midi硬盤點唱機是專門用來播放midi ， mp3 ， mtv原唱原影的點唱機，可以通過編號及菜單來點歌，整機預裝硬盤帶10000 20000首midi格式的多種語言的mtv歌曲，尚留有大量空間，用戶可通過從dvd - rom直接將vcd dvd碟片里的mtv卡拉ok原唱原影歌曲dat vob格式加入到點唱機的硬盤里，同時支持host usb2 . 0口，也可以直接從u盤或移動硬盤里加原唱原影mpeg1 2 4格式， mp3的歌到硬盤里並可使用遙控器操作輸入中英文歌曲名設置參數。In the third chapter, a methodologies to realize second - order band - pass filter with which center frequency tuned in a wide range using mcdi ( multiple output current - mode differential integrator ), these two kinds of mcdi are composed of pmos and nmos input transistors respectively, lastly we compare these two integrators " merits and disadvantages
第三章：提出了輸入級分別為pmos管、 nmos管的多輸出端電流模式全差分積分器，並由此構成了中心頻率連續可調的二階帶通濾波器，同時比較了二者的優缺點。We first consider the m / m / s queueing model with two priorities. through the analysis of state transition - rate equations of two priorities, the average queue length at the input or output of communications systems is derived
首先考慮帶有兩個優先權的m m s排隊模型，通過對兩個隊列的狀態轉移方程的分析，給出了通信系統輸入輸出線上的穩態隊長。The parameters of the long - range remote control receiving system are analyzed and simulated thoroughly, such as the signal to noise ratio ( snr ) at the receiver, the delicacy of receiver, auto - gain and band - width of the pass - band. then the important references are provided for the design of long - range remote control receiver
分析了遠程遙控接收系統的參數如接收機輸入信噪比、接收機靈敏度、自動增益和接收機通帶帶寬等，並對遙控接收系統性能指標進行了估算，為遠程遙控接收機的設計提供了一定的理論依據。Exquisite picture lovely shape, it is with action elements of fun games together for a bar, protagonists hands a bit short ? operations guide : space key for determining directive through 4 key for different combinations of moves
精緻的畫面，可愛的造型，這便是帶有動作元素的尋寶游戲，一起來尋找吧，主角手有點短呢操作指南：以空格鍵輸入確定指令，通過四個鍵輸入出現不同的動作組合Firstly, a data acquisition circuit was designed, which is consisted of ad420, dac702 and ad7701. then, comparing with different usb control ics, an2131 was selected to achieve the control of data acquisition and usb communication. detailed rules to develop a usb device general purpose drivers were introduced, and the virtual instrument application software was developed basing on labview
首先是數據採集卡的製作，包括由ad420 、 dac702數模轉換晶元構成的模擬輸出通道，由ad7701 、 ad8200構成的模擬輸入通道;然後比較幾種不同的usb介面晶元，選擇帶usb介面的an2131微處理器實現數據採集的控制和usb傳輸功能;之後是usb設備驅動程序的開發和基於labview的虛擬儀器應用程序的設計。分享友人