前置信號機 的英文怎麼說
中文拼音 [qiánzhìxìnháojī]
前置信號機
英文
advance signal-
Pre - data gathering module achieves the collection and communication of sixteen - route temperature signal. speed measuring and controlling module realizes the control of refolw soldering transfer speed by manipulating transducer. on - off outputting module fulfills calefaction control of calefaction tube by solid state relay. above position operator software programs by delphi, and realizes pid parameter automatic timing and no - oversnooting temperature control. software has friendly interface, convenient operation, complete functions
前置數據採集模塊完成16路溫度信號的採集和通訊；速度測量模塊與速度控制模塊通過控制變頻器來調節迴流焊的傳輸速度；開關量輸出模塊通過固態繼電器對加熱管進行控制；上位機軟體採用delphi編程，實現了pid參數自整定以及無超調的溫度控制。The input signals pass through the prepositive circuit which transforming the measured signals ( voltage or current ) into small voltage signals, the signal adjust circuit consist of programmable - gain amplifier and filter, and digital signal processor tms320lf2407 for data acquisition and processing in turns. provide the measuring results on lcd module. and also can transfer data to the pc ’ s rs232 for farther analyse
採用前置電路將被測信號（電壓或電流）變換為小電壓信號，經過信號調理電路對信號進行程式控制放大和濾波后，通過tms320lf2407實現信號的數據採集、信息處理和計算，將測量結果通過液晶模塊顯示，還可經過rs232介面與計算機進行數據傳輸，做進一步的分析和應用。Also, in prior years, adjustment of the signal-generator and torque-generator stator mechanical radial positions was required.
前些年對信號發生器和轉矩發生器定子的機械半徑位置也要進行調整。For the bldcm which has a pseudo - sinusoidal back - emf waveform, this dissertation presents a svpwm control method using six discrete position signals for minimizing the torque ripple. the main aspects for the implementation of this method are analyzed, including the initial orientation of the voltage vector, reasonable choice of the impedance angle and the advance commutation angle, and estimation of the successive rotor positions
針對反電動勢類似正弦的準正弦波反電動勢無刷直流電動機，本文提出一種基於六個離散位置信號的自同步svpwm （電壓空間矢量法）控制方法，用以削弱電磁轉矩脈動，分析了實現這種方法的主要控制環節，包括起動時電壓空間矢量的初始定位，阻抗角與電流超前角的合理選擇以及連續轉子位置的估計等。Where there is no doorman or receptionist but only mail boxes, intercoms or door bells on the ground floor, ordinary mail items may be dropped in the mail box, and the addressee may be asked via intercom or ringing of the bell to come to the ground floor for pickup of registered mail or to pay postage due
二無法依前款規定投遞、地面層未設有管理服務人員或郵件收發處而僅設置受信設備、對講機或電鈴者，平常郵件投入受信設備，掛號郵件及欠資郵件，請收件人至地面層領取或補付欠資。The system is based on the inner pid regulate function of frequency converter to regulate the living water stress with low constant stress, and the stress signal is sensed by the stress translator as feedback signal and the construction is sent by the computer as the given signal. the water stress is regulated to high constant stress when the fire happens
本論文基於變頻器內置pid調節系統，以管網的壓力變送器壓力信號作為反饋信號，由上位機發出的當前狀態作為給定輸出，調節生活供水壓力使其保持低恆壓狀態；當火災發生時，調節系統管網壓力為高恆壓狀態。In this system, the closed loop is composed of velocity measurement machine used as velocity feedback and coder used as position feedback, the feed - forward signal of ship swaying is measured by rate gyro
該系統用測速機構成閉環，作速度反饋，編碼器作位置反饋，速率陀螺測量並前饋艦船搖速度信號。The total auto symbol recognition disposition method proposed in this paper can deal with the problem which converts papery of aircraft theory graphics or system graphics into vectorgraphs which can lose some useful information. furthermore, the display technique with multi - level buffer not only resolves the problem of high - speed for aircraft theory graphics or system graphics in cbt, but also ensures scrolling and zooming in / out smoothly and avoids the flashing phenomenon efficiently
目前紙質的飛機系統圖、原理圖矢量化方法用基本的矢量圖元按其位置來再現原始圖，從而導致矢量后圖中各符號整體信息丟失問題，該文提出的自動符號識別方法可有效地解決該問題，此外改進多級緩沖顯示技術不但可有效地解決cbt中系統圖、飛機原理圖的快速顯示，而且也保證圖形可連續光滑滾動和消除放縮拖動時屏幕閃爍現象。The conditions of the road in front of the car can be kept watch on by this system continuously. before the dangerous circumstance happen, a warning signal will be sent to the driver by the system in time ， which can make the driver have enough time to take effective measures and avoid collisions
為避免高速公路上的汽車碰撞事故，本文設計了汽車自適應馳控裝置，對本車前方路面情況進行持續監視，在有險情發生前，及時發出報警信號，讓司機有足夠時間採取正確措施避免汽車碰撞事故。Secondly, we simulate the transmission process in computer, calculate the optical - signal - to - noise - ratio ( osnr ) of output signal with the same input signal filtered by the ofbg, matched filter and f - p filter, analyze the improvement of the osnr after filtered by them. we find it also has advantage over f - p filter. taking the two reasons into account, we believe that the weak ofbg is superior to the widely used f - p filter
另外用計算機模擬計算了光信噪比的改善情況，研究發現：一個相同的噪聲信號經弱ofbg后的光信噪比較經過f - p濾波器后的光信噪比高，由此認為， ofbg用作光濾波器對接收端前置光放大器的噪聲進行濾波，比常用f - p光濾波器具有更大的優越性。In this paper, a new way of real - time damage detection method was proposed according to the high speed working situation of the composite flywheels for energy storage, and a suit of equipment was developed to test the composite samples with piezoelectric disc built - in, the response waves before and after the damage occurred were recorded to the computer. on the base of traditional spectrum analysis of signal recorded, the wavelet analysis was introduced and the program in matlab language was made. with the wavelet packet decomposition of the signal, the relations between the change of response signals and damage characters were gotten, a database for damage recognition was created
本文結合儲能復合材料飛輪高速旋轉的工作特點，提出了一種在線檢測飛輪轉子損傷的方法，自主設計一套實驗裝置對模擬各種損傷的的試樣進行了測試，試樣損傷前後的響應信號被採集后存入計算機中；在對採集信號進行傳統的頻譜分析的基礎上，引入了先進的小波分析理論，利用matlab語言編寫程序，對信號進行小波分解，得到了信號變化和損傷特徵之間的關系，建立了一個識別飛輪損傷的數據庫；小波包分解得到信號對比圖和特徵向量，可以有效判定材料內部有無損傷和損傷的程度，結合頻譜分析等，可一定程度上判定損傷的類型，為儲能飛輪的安全運轉和智能化運作提供了決策依據。One major classification of robot visual servoing system distinguishes position - based control form image - based control based on the error signal is defined in 3d coordinates or directly in terms of image features
目前，機器人視覺伺服系統根據視覺反饋信號表示的是3d空間坐標值或是圖像特徵值而分為基於位置的（ position - based ）和基於圖像的（ image - based ）視覺閉環反饋兩種方式。The major contents of this part is composed of the basic principle of the if circuit, the affection of the noise performance of the preamplifier to the whole system, the main constitutes of the receiver and their test results and the modulation circuit of the vco, etc. the test result shows that the performance of these circuits is fairly good
內容涉及：中頻電路的基本原理及指標，前置放大電路的噪聲性能對整個系統性能的影響，接收機的主要組成部分（前置放大電路、 agc放大電路）的基本原理、實現方法、測試結果及分析和vco的調制信號產生電路的實現及測試結果。與前端聯調結果表明該部分電路性能良好。Some of them have set about this work. this article discusses the principles of digital tv studio technology according to the present situation and developing tendency of current tv systems, including the features of digital studio, the coding standards of digital signal, the compressing technology of video and audio signals and the utilization of computers multimedia technology in editing tv programs. it elaborates the designing methods, principles and puts forward several concrete disposition examples
本文僅根據目前高校電視節目製作系統的發展現狀及趨勢著重論述了數字電視中心的技術原理，包括數字演播室的特點、數字分量信號的編碼標準、視音頻信號的壓縮技術以及計算機多媒體技術在電視節目製作中的應用等內容，闡述了高校電視節目製作系統數字化的設計思路及設計原則，提出了具體的設備配置方案。Locating with cell _ id based on ms : this kind of system can be called ms - autonomous - locating system or forward - link locating system in gsm network. the locating process is the ms working out it ' s geometry location comparing with several base stations ( their location is fixed ) based on received signal from them, then calculating the location by some kind of algorithms. therefore the user of the ms could master himself ' s location information
基於移動臺的cell _ id定位：這類系統也稱為移動臺自定位系統，在蜂窩網路中也叫做前向鏈路定位系統。其定位過程是由移動臺根據接收到的多個已知位置發射機發射信號攜帶的某種與移動臺位置有關的特徵信息來確定其與各發射機之間的幾何位置關系，再根據有關演算法對其自身位置進行定位估計，由移動臺用戶掌握其自身的位置信息。分享友人