閉路通信 的英文怎麼說

中文拼音 [tōngxìn]
閉路通信 英文
closed circuit signalling
  • : Ⅰ動詞1. (關; 合) close; shut 2. (堵塞不通) block up; obstruct; stop up Ⅱ名詞(姓氏) a surname
  • : 1 (道路) road; way; path 2 (路程) journey; distance 3 (途徑; 門路) way; means 4 (條理) se...
  • : 通量詞(用於動作)
  • 通信 : communication; communicate by letter; correspond
  1. In the design and application of electronic engineering, both in open circuit and in closed circuit, signal is certainly affected by environment, the status of the transport network and the change of the parameters of the components applied. then the characters of useful information will be changed more or less and the change is generally called as distortion, namely so - called signal distortion

    =在電子工程的設計和應用中,號無論在開傳輸或傳輸中都受到環境、傳輸網的工作狀態和應用的元器件參數變化的影響,從而會或多或少地改變有用息的性質,這種變化就是所謂的號畸變現象,常稱作失真。
  2. Hydraulic control system of double - cylinder vessel gate is a sort of typical electrohydraulic proportional control system0 in order to study electrohydraulic flux control characteristics of this system, i have analyzed the principle of this hydraulic control system, and made its mathematics model ? in double - cylinder hydraulic system, it is necessary to process electric synchronous control in this hydraulic system, this paper also introduces a sort of fnn ameliorated from the point of view of intelligent control theory, and clarifies the principle of applying that network to achieve synchronous controlo at the same time, the means of fuzzy configuration analysis is used for network training, the comparative experiments make known that the method of applying fnn to realize synchronization control is feasible, furthermore, its effect is better than others0 this paper puts forward that a distributed control system can be used to monitor and control vessel gate within a real - time or remote distance, the basic project, structure, applications and functions of computerized scada system in hydraulic system of vessel gate is introduced ? a double layer network structure, epigynous and hypogynous machine network, is applied to this system, in accord with the application of technique such as plc, integrated software etc, this paper introduces the methods and application to achieve the computerized scada system in the task, and analyzes the characteristic of this system, in this paper, the application of configuration in monitor and control system of vessel gate is discussedo in addition, in accord with the application of technique such as visual basicb

    雙缸船閘液壓啟控制系統要求解決同步控制問題,文中從智能控制理論角度出發,採用了一種改進的模糊神經網,結合模糊聚類分析方法,闡述了應用該網實現同步控制的原理。過對比模擬實驗表明:應用模糊補經網實現同步控制是可行的,而且它的同步控制效果要優于傳統的設置主從令缸控制方法,具有良好的魯棒性能。另外,本文提出了建立船閘控制系統的分散式控制系統,介紹了船閘液壓控制系統的計算機監控系統( scada )的方案、結構、應用和主要功能,採用雙層網化結構:上位機網和下位機網,並結合plc技術和組態軟體等技術構成的計算機監控系統的實現方法,實際應用,分析了這種較新的系統模式在船閘液壓控制系統的計算機監控系統的功能實現中所具有的特點。
  3. However, due to the fact that gansu is situated in the inland area ; gansu ' s construction of basic facilities is backward ; the transportation network is underdeveloped and the transportation capability lists low, gansu ' s economic healthy development sutlers from hindrance

    但甘肅省由於長期地處塞地域,基礎設施建設落後,交不發達,交能力偏低,嚴重阻礙了甘肅經濟的健康持續發展。
  4. The bias magnetic field of the bias coil driven by bias current and small signal test current, results in the induced signal of the control coil. the terminal voltage of the control coil is detected by the test circuit. then the signal containing the information of rotor displacement is obtained, from which we can get the dc voltage signal proportional to the rotor displacement through half - wave rectification circuit and low pass circuit. this dc signal is put into a pid controller to get the control signal of the rotor displacement

    偏置測試電向偏置線圈輸入偏置電流和小號測試電流,兩者產生的偏置磁場在控制線圈產生感應號,檢測電檢測控制線圈端電壓並提取含有轉子位移息的電壓號,該號經半波整流電和低濾波電后得到與轉子位移成正比例的直流號,再由pid控制器轉換為轉子位移的控制號,最後控制號輸入功放電產生控制電流,實現環控制。
  5. It integrates : the building automation system ; the fire alarm system ; the wired television cctv control system and ; the ups system. the system adequately displays information for users requirements including subsystem and facility parameters, running status and alarm status via this platform. through the internal communication network, the system connects to the buildings office automation system, making information well sharing and inter - communicating and as well as promoting intelligent management capability

    該系統將bas樓宇自動化系統fas消防自動化系統cctv電視監控系統ups系統等平等地集成到統一的綜合管理平臺上,過該平臺將用戶關心的各子系統設備的運行參數運行狀態報警狀態等息給予充分的展示同時,過大廈內部的息網系統,與大廈oas辦公自動化系統集成,使得大廈內所有智能化系統息充分共享與交互,使大廈的整體智能化管理等級得到提升。
  6. The unites which is designed according to the transformer substation and distribution automation have protection, measurement, controlling and communication function communicated with ftu and realize measurement, protection and feeder automation integrated functions. the equipment can communicate with scada and finish measurement and controlling function

    本系統的配電終端是按同時面向變電站(開所)間隔與配網自動化饋線設計的一體化現場終端,具有保護、測量與控制以及對饋電線ftu的管理功能,實現了測控、保護、饋線自動化三合一的思想。
  7. And so on, the mathematical model and transfer function of the tracking system are built, and the feasibility of the tracking control system design is demonstrated. furthermore, the static error of the system with a unit incline input is deduced. a majority of model of unit is based on analytics, so the general model can apply to other optical intersatellite communications systems

    在此基礎上,將atp跟蹤控制子系統視為線性定常系統,過解析法和實驗法對子系統的各個控制環節的單元器件進行合理建模,得出整個環總的開環及環傳遞函數,論證了本課題所設計的atp跟蹤控制環的可行性及其視軸輸入為斜坡號時的理論穩態誤差。
  8. There must be a marine casualty happened every 4 days before 1984, the amount of marine casualty happened at this area corresponds to 1 / 7 amount of the whole changjiang " marine casualty, so mariners gave it a name as " mouth of tiger ". due to the specific geographical condition and the extremely representative vessel traffic management of changjiang yingongzhou channel section, many intelligent people began researching and practicing the vessel traffic management of this changjiang " s down - stream complicated channel section from 1980s, at dec 15th 1984 the authority at that time - changjiang yingongzhou channel section previously ; up to the last years of 1980s ministry management administration applied traffic control on changjiang yingongzhou channel section previously, up to the last years of 1980s ministry of communications assigned shanghai marine college, shanghai ship & shipping research institute and changjiang harbor superintendence administration to make feasibility demonstrate about modern vts of zhenjiang traffic control section ; in 1990 dasha radar station which is the first radar vts station with inner river was finished, groped a new way for applying modern radar traffic control of vessel traffic management ; in 1997 the vtms of changjiang " s down - stream from nanjing to liuhekou was completed with connecting net and came into operation formally, meanwhile the signals of dasha radar station were conveyed to vts center by light cable, and then united applying vessel traffic management upon the whole authorized area ; in jun 2001 jiangsu msa made changjiang yingongzhou channel section as the first experimental group of creating " civilized, safe, passable channel activity, updating dasha radar antenna and receive - transmitter building closed - circuit television monitor system, setting uo safety warning board, starting navigational route reformation, carrying out united construction

    1984以前這里平均每四天就發生一起海損事故,事故數占整個長江的1 7 ,被行船人稱為「老虎口」 。長江尹公洲航段緣其極為特殊的地理區位條件和極具代表性的船舶交管理,從上個世紀八十年代初就有識之士開始了這個長江下游最復雜航段的船舶交管理探索和實踐。 1984年11月15日當時的長江航政管理局在長江尹公洲水域率先施行交管制;到八十年代末交部委託上海海運學院、上海船舶研究所和長江港監局聯合開展鎮江交管制段建立現代化交管系統的可行性論證; 1990年大沙雷達站? ?內河第一座雷達交管站建成,摸索實施現代化雷達交管的船舶交管理新途徑; 1997年長江下游南京至瀏河口船舶交管理系統建成聯網投入正式運行,同時將大沙交管雷達過光纜傳輸至交管中心,統一實施全轄區船舶交管理; 2001年6月江蘇海事局將長江尹公洲航段作為第一批創建「文明平安暢航段」活動試點航段,更新大沙雷達天線和收發機,著手工業電視監控系統建設,設立安全警示牌,啟動航改革,開展聯合「共建」 。
  9. The driver has the quiescent current under 1 a and also has soft - start circuitry to limit inrush current flow at power up. the chip can be operated normally in the temperature range of - 40 to 85 according to the simulation results. the brightness of the white leds can be controlled by using a dc voltage or a pwm signal applied to the pin with a few external components added

    系統採用0 . 5 mcmos工藝;輸入電壓范圍為2 . 7v到5 . 5v ;在關狀態下消耗電流小於1 a ;具有軟啟動功能,可減小啟動過程中的浪涌電流;具有短及過熱保護功能,工作溫度范圍為- 40至85 ; led亮度控制可以過外加dc或pwm電壓號和很少的外部元件實現。
  10. 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? ?利用基於bp網增廣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。
  11. The off - line program system based on cad / cam for dispensing robot is designed on the computer. in the module of trajectory planning, preliminary discussion is done about the shortest loop path and an algorithm of solving this problem is provided ; in the module of back procedure, dda ( digital differential analyzer ) is adopted in line, circle and ellipse interpolation. at last the protocol transferring program data to robot from off - line system is analyzed

    在離線編程的系統的設計中,實現了cad的建模、點膠軌跡的程序示教、工藝參數編輯、軌跡規劃、後置處理等功能,並在規劃模塊中針對平面內不規則排列點進行點膠的軌跡規劃進行了初步探討,採用圖論的方法,給出滿足實際要求且演算法復雜度較小的最短合迴的程序演算法;在離線編程系統的後置處理模塊中,介紹了直線、圓弧、橢圓弧的dda插補方法以及脈沖分配不均勻的改進方法;最後對協議的制定進行了分析。
  12. In this paper, we study the performance of input - buffered atm switching with window - access scheme and output - grouping architecture. the close - form formulae of maximum switch throughput, mean cell delay and cell loss probability are obtained by probability generating function approach. the accuracy of theoretical analysis is verified by computer simulations and results show that the maximum switching throughput will reach 99 % under random uniform traffic when the window size and the group size are 4 and 16 respectively

    本文提出了具有組合的窗口接入和線群輸出結構的輸入緩沖atm交換網並對其性能進行了研究.過概率生成函數方法得到了計算該交換網最大吞吐率,平均元時延和元丟失率的封表達式,並過計算機模擬實驗驗證了理論分析的精確性.研究結果表明,在隨機均勻業務下,當窗口尺寸和輸出群尺寸分別為4和16時,最大吞吐率可達到99
  13. Based on an analysis on the present situation and development of three kinds of signal systems ( the point system based on interrogator responsor, the quasi - moving block system based on digital track circuit and the moving block system based on wireless data transmission ) in urban rail transit, some suggestions on the localization of signal system of urban rail transit are put forward

    摘要在分析三種城市軌道交號系統制式(基於查詢應答器的點式系統、基於數字軌道電的?移動塞和基於無線數據傳輸的移動塞)的現狀和發展基礎上,對實現我國城市軌道交號系統國產化提出建議。
  14. In recent years, with the rapid development of information technology, modern distance education system, which is based on satellite communications, wired television network, telegraphic communication and internet, comes into being. unesco ( united nation educational scientific and culture organization ) point out : " the rapid development of new information and transmittable technology will transform progress and approach of knowledge.

    近年來,隨著現代息技術的飛速發展,以衛星電視和電視網、郵電訊網以及internet為基礎的現代遠程教育體系正在形成,聯合國教科文組織指出: 「新的息和傳播技術迅速發展,將進一步改變知識的發展,獲得知識的途徑」 。
  15. Ip networks are widely used today. traditional ip switches can only provide be service, and their services and functions are fixed, so we can not adjust and upgrade or extend the functions of switches through programmability

    Ip網是當今的主流發展網,傳統的ip交換機是建立在只能提供專門單一網服務be傳輸的基礎上,其服務和功能是固定而封的,不具備編程進行服務調整、提升或擴展的能力。
  16. Railway applications - communication, signalling and processing systems - safety related communication in closed transmission systems

    設施.號和處理系統.封運輸系統安全
  17. Railway applications - communication, signalling and processing systems - part 1 : safety - related communication in closed transmission systems

    設施.號和處理系統.第1部分:在封的傳輸系統中有關安全
  18. The thesis analyzed the development of the gate ' s hoist and its controlsystem, and the localization of the gate ' s operating machine ' s traditional hydraulic system, according to today ' s control technique, especially the characteristics of the profibus fieldbus, the thesis put forward the project that " the gate supervise controlling system base on the profibus control and ethernet technique ", according to that project, completed plc control procedure and the procedure of the supervise and control ( supervise and control software and man - machine interface ), at last the thesis set up a ethernet network for the monitor and the plc correspondence of a place of honor machine and plc and a fieldbus network for the far i / o mold and the plc, made the gate supervise and control by network

    文章對閘門啟機及其控制系統的發展狀況和傳統液壓啟機控制系統的局限性進行了詳細分析,並結合當前控制技術,特別是profibus現場總線控制技術的特點,針對所研究的水電站的實際情況提出了「基於profibus現場總線控制和以太網技術的閘門監控系統」的技術方案。並根據該方案完成了下位機( plc控製程序)的編制和上位機(監控軟體和人機界面的組態)的組態。最後過組建上位機與plc的以太網和遠程i o模塊與plc之間的總線網,實現了整個閘門監控系統的網化。
  19. It is particularly useful in intranets and closed networks where the easy access and communications makes the system relatively efficient

    這種模型特別適合用於intranet和封的網中,因為訪問和都很方便,因此系統的效率也相對較高。
  20. As richard thomas, the information commissioner, reiterated this week, governments, institutions and companies are garnering vast stacks of personal information through omnipresent cctvs, credit - card transactions and the like

    本周,息專員理查德?托馬斯反復重申:政府、公共機構和公司過無所不在的電視,用卡業務等諸如此類的渠道,獲得了海量的私人息。
分享友人