節目信號線 的英文怎麼說
中文拼音 [jiémùxìnháoxiàn]
節目信號線
英文
programme line-
The modulating signals of firing delay angle at the rectifier and firing lead angle at the inverter, and the excitation voltage are chosen to be control variables. the offset of the current of dc line and the extinction angle and the power angle of generator are chosen to be control outputs. then a nonlinear controller is designed for the system under study according to direct feedback linearization theory
以整流側觸發延遲角的調節信號、逆變側觸發超前角的調節信號以及發電機勵磁電壓作為控制變量，以直流線路電流、逆變側關斷角以及發電機功角的偏移量作為目標輸出，用直接反饋線性化方法設計了系統的非線性控制器。Satellite master antenna television ( smatv ) - a satellite dish system used to deliver signals to multiple dwelling units ( e. g. apartment buildings and trailer parks )
衛星主天線電視-用來將節目信號傳送給建築物中多個接收器的衛星圓盤系統。建築物中多個接收器是指公寓樓中各家各戶都有從同一衛星圓盤接受節目信號的插頭。Aim at the dtc ' s blemish mentioned above and the direction of dtc technique development, the dissertation put great emphasis on the work as follows, with an eye to exalt dtc system function : ( 1 ) a new speed - flux observer of an induction motor is proposed to enhance the accuracy of flux observing, which is an adaptive closed - loop flux observer and different from the traditions. a new adaptive speed - observation - way is deduced out according to the popov ' s stability theories ; ( 2 ) to improve the performance of dtc at low speed operation, we have to exalt the accuracy of the stator flux estimation and a new way of bp neural network based on extended pidbp algorithm is given to estimate and tune the stator resistance of an induction motor to increase the accuracy of the stator flux estimation ; ( 3 ) digital signal processor is adopted to realize digital control. an device of direct torque control system is designed for experiment using tms320lf2407 chip produced by ti company ; ( 4 ) bring up a distributed direct torque control system based on sercos bus, sercos stand for serial real time communication system agreement which is most in keeping with synchronous with moderate motor control ; ( 5 ) the basic design frame of the hardware and software of the whole control system is given here and some concrete problem in the experiments is described here in detail
針對上面提到的直接轉矩控制的缺陷和未來直接轉矩控制技術發展方向，本論文重點做了以下幾個方面的工作，目的在於提高dtc系統的綜合性能： （ 1 ）提出一種新型的速度磁鏈觀測器，新型的速度磁鏈觀測器採用自適應閉環磁鏈觀測器代替傳統的積分器從而提高磁鏈觀測的精度，並且根據popov超穩定性理論推導出轉速的新型自適應收斂律； （ 2 ）改善系統的低速運行性能，主要從提高低速時對定子磁鏈的估計精度入手，提出了一種提高定子磁鏈觀測精度的新思路? ?利用基於bp網路增廣pidbp學習演算法來實時在線地修正定子電阻參數； （ 3 ）採用數字信號處理器dsp實現系統全數字化硬體控制，結合ti公司生產的tms320lf2407晶元，設計了直接轉矩控制系統的實驗裝置； （ 4 ）提出了基於sercos總線網路化分散式的直接轉矩控制系統， sercos （ serialrealtimecommunicationsystem ）是目前最適合同步和協調控制的串列實時通信協議； （ 5 ）基本勾勒出整個控制系統的硬體和軟體設計基本框架，詳細描述一些實驗中的具體的細節問題。Addressable - able to signal from the headend or hub site in such a way that only the desired subscriber ' s receiving equipment is affected, making it possible to send a signal to a subscriber to change their level of service ( e. g. adding a new premium channel )
有選址功能的- -有選址功能的有線電視設備，能從有線電視設備前端或電線插孔發出節目信號，只有那些有需求的用戶的接受設備才能收到此信號，這就能做到向用戶發出信號來改變他們的服務水平，比如增加一個新的付費頻道等。First, the system converts the received tv program signals into mpeg file with video capture card, cut the mpeg file into several short mpeg files according to the content of the program and establish index for them. then, it transports the short mpeg files to jukebox server. the jukebox server with responsibility for discs management, it record the program material into discs and provide service for clients visit the program online
系統將接收到的衛星電視信號通過視頻採集卡，把它採集成mpeg文件，再根據節目內容將mpeg文件分段成小的節目素材文件並建立檢索索引，然後將它傳遞到光盤庫服務器；光盤庫服務器負責光盤的管理，它一方面將節目素材文件刻錄到光盤上，另一方面為客戶機提供在線訪問服務；客戶端根據一定檢索條件進行檢索，獲得所需的節目素材文件，並下載到本地，本地的媒體編輯軟體直接對mpeg文件進行編輯，生成新的節目。Parameter - tuning stochastic resonance ( psr ) is a more realistic way to handle the phenomenon of sr in a broad sense. based on the theory of psr, some key problems of using sr in signal processing are studied, these issues include : the application of intrawell sr in multi - frequency analog signal processing, recovery of the waveform distortion caused by the bistable system and other post treatments, measure of system performance with multi - frequency analog digital input and measurement of system performance of binary digital input. the results are used in signal detecting under the background of the real sea noise
隨著參數調節隨機共振（ psr ）概念的提出，隨機共振在信號處理中的應用有著很大拓展的空間，本文就主要研究幾個目前隨機共振在信號處理中應用時經常碰到的問題，其中包括阱內隨機共振現象對多頻模擬信號處理的應用、雙穩態系統輸出的波形畸變的消除及其他后處理、適用於多頻信號的輸出性能衡量指標、二進制數字信號輸入情況下的系統輸出的性能衡量，並將所得的結果應用到了一個自然界的噪聲? ?海洋噪聲背景下的信號檢測中，這些研究對于隨機共振理論的進一步發展及其在非線性信號處理中的應用具有重要的意義。At present, the domestic general solution for dvb is to transmit the tv programs from the local stations to satellites. then the signals are received by terrestrial stations with satellite ird ( integrated receive decoder ). at last, the tv programs are transmitted to end clients through cable dtv networks
當前我國數字電視廣播的實現方案，主要是通過各廣播電臺、電視臺的節目發射至通信衛星，再由地面接收站利用衛星數字電視解碼器（ ird ? integratedreceivedecoder ）接收衛星廣播信號，最後通過各地有線數字電視網將電視節目傳送到最終用戶。The programming services provided by a cable system for the lowest of its monthly charges. these services typically include local television signals, advertiser - supported cable networks, and local access
由有線電視系統以最低收費提供的節目服務，包括:地區電視信號，廣告商贊助的有線電視網，以及接通服務Both broadcast television and satellite stations transmit programming via a radio signal ( see how radio works for information about radio broadcasting )
廣播電視臺和衛星電視臺都是通過無線電信號發送節目（參見無線電廣播資料「無線電工作原理」 ） 。分享友人