closed circuit control 中文意思是什麼
closed circuit control
解釋
閉路控制-
The plant is operated entirely by remote control and monitored by closed circuit television or periscope.
這個工廠完全用遙控操作，而且用封閉電路電視或展望鏡來監視。 -
Vvvf door controller frequency converter makes lift door installation easier and more convenient as its control center is the internationally advanced engineering 16 digital micro computer and it operates with the fully digital spwm modulation techniques, with igbt module as the output power drive and with voltage, current and speed under fully digital closed circuit control ( the door controller ' s operation parameters are inputted by means of the keyboard )
Vvvf控制門機變頻器採用當今國際上先進的工控16位微型計算機為控制核心，採用了全數字spwm調制技術， igbt模塊作輸出功率驅動，電壓、電流、速度全數字閉環控制（門機的運行參數均可通過鍵盤設置輸入） ，從而，使門機的安裝調試更加簡單，方便。 -
The design of high - voltage circuit based on pwm technology is briefly described. the closed - loop current control theory using analog instruments is fully discussed, followed which is that using digital instruments. it is an important part that the hardware and software design of the single chip - two arms and two chips - two arms current control circuits with a new chip applicable to digital current control system
簡單介紹了基於開關電源技術的高壓電路設計；詳細講述了模擬穩流電源的閉環穩流原理，並在此基礎上討論了利用數字電路實現穩流的原理及可能性；選擇出適合數字穩流系統的新型晶元，完成了單片雙路穩流系統、雙片雙路穩流系統的軟硬體設計；給出了一種簡單易實現的比例?積分控製程序。 -
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通管理，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通管理探索和實踐。 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通管制；到八十年代末交通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通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通管理新途徑； 1997年長江下游南京至瀏河口船舶交通管理系統建成聯網投入正式運行，同時將大沙交管雷達信號通過光纜傳輸至交管中心，統一實施全轄區船舶交通管理； 2001年6月江蘇海事局將長江尹公洲航段作為第一批創建「文明平安暢通航段」活動試點航段，更新大沙雷達天線和收發機，著手閉路工業電視監控系統建設，設立安全警示牌，啟動航路改革，開展聯合「共建」 。 -
Based on this scheme, the control system architecture is designed. based on this system ’ s necessary, the signal conditioning interface box is designed, it is used in the conditioning of sensor and the design of drive circuit, the software of controller is also developed, finally, the performance index of controller is validated by a closed - loop simulation test system with aero - engine model and digital controller
根據此方案，確定了模擬平臺中控制系統的體系結構，根據系統的需要，設計了信號調理介面機箱，實現了對傳感器信號的調理及驅動電路的設計，並進行控制器軟體的開發，最後利用發動機數學模型和數字電子控制器組成閉環模擬環境，以驗證控制器的各種性能指標。 -
We design inversion control circuit with cmos figure pll cd4046 act as core and microprocessor 80c196kc act as assistant controller. adopting a control method that combine fuzzy controller and pll control, improve induction heating power succeed in startup. adopting electric current voltage pair closed loop feedback design, with trough route capacitance voltage and trough route electric current act as pair closed loop feedback signal, guarantee induction heating power output accuracy
並對系統主電路的元器件參數進行了詳細的計算；設計了以cmos數字鎖相環cd4046為核心、以80c196kc作為輔助控制器的逆變控制電路；採用了模糊邏輯與鎖相環相結合的控制技術，提高了電源的啟動成功率；採用電流、電壓雙閉環反饋方案，採用槽路電容電壓和槽路電流作為反饋信號，從而保證了電源功率的輸出精度。 -
In view of the shortcomings of the existing energy - saving hydraulic pumping units, a new hydraulic pumping unit with closed oil circuit is developed, which realizes speed control by using variable frequency hydraulic technology and implements load balance with accumulator
摘要針對現有多種節能型液壓抽油機均存在裝機功率大、能耗高、自適應能力差等缺點，提出了一種以蓄能器平衡載荷的變頻液壓閉式節能抽油機。 -
The star - model bidirectional control system of closed circuit television
遠程多媒體閉路電視監控系統 -
Microcomputer control system of closed type hydraulic circuit for concrete pump
混凝土泵閉式液壓迴路微機控制系統 -
The double closed - loops framework is applied in the pfc control circuit and the pi algorithm is adopted as system " s control algorithm
Pfc系統的控制電路採用電流環與電壓環雙閉環控制結構，控制演算法採用傳統的pi演算法。 -
It is shown that closed loop circuit feedback control and open loop control are separated during the zero - power start up process. the self - starting of the medium frequency converter is achieved
論文分析了通過plc對感應加熱進行閉環控制的控制策略，並採用了閉環開環分離的方法，解決零電壓啟動問題。 -
An approximate analysis of medium frequency parallel converter used in power supply controlled by microcomputer is presented in this work. the proposed approach may be applied to converters whose industrial applications are induction heating and metal melting installations. it is shown that closed loop circuit feedback control and opened loop circuit control are separated during the zero - power start - up process
通過閱讀資料和文獻，在對中頻感應加熱及其相關技術的發展、現狀和趨勢作了一個比較全面而深刻的研究基礎上，論文分析了並聯感應加熱電源閉環控制的控制策略，並採用閉環開環分離的方法，解決了零電壓啟動問題；設計了中頻感應加熱電源的微機控制系統。 -
Studies the work principle and key technology of the boost pfc circuit in theory, designs a small power digital boost pfc converter, this converter works in average current control means and based on tms320lf2407 dsp, adopts current and voltage double closed loop control and pi control arithmetic
從理論上分析和研究了數字控制boostpfc電路的工作原理和關鍵技術，設計了一款小功率基於tms320lf2407dsp的平均電流控制型的數字控制boostpfc變換器，該變換器應用了電壓、電流雙閉環控制和pi控制演算法。 -
This article in studies on the scoot and scats system ' s merits and demerits, according to our urban road network system ' s characteristics, has designed one system based on the closed ring circuit auto - adapted region transportation coordination control
摘要研究scoot系統和scats系統性能優缺點，根據我國城市道路網系統的結構特點，設計了一種基於閉合環路的自適應區域控制系統。 -
This system take the industry computer and the programmable controller as a control core, step - motor, the frequency changer and the ac machine does for the execution, matches by the sensor and its the periphery connection electric circuit, formed a pair the closed - loop control system
本系統以工業計算機和可編程式控制制器為核心，步進電機、變頻器與交流電機做為執行器，配以傳感器及其外圍介面電路，構成雙閉環控制系統。 -
Finally, the control part of the tightening machine is introduced. the closed loop control is applied in the whole of control part and the control precision can be improved. the principle diagrams of the main circuit and the program flow diagram of the main control system are given
最後，對擰緊機的控制部分進行了介紹，整個控制部分採用閉環控制，提高了控制精度，文中還給出了主要電路部分的原理圖和主控單元的軟體流程圖。 -
Area traffic control and closed circuit television system for tuen mun and yuen long districts
屯門及元朗區區域交通控制及閉路電視系統 -
This system controls the sub - area by road network in closed ring circuit achievement, searches a bunching parameter combination using the signal parameter optimization model, carries on the coordination control to the different closed ring circuits to form chooses in advance the plan, and on the judgment, the choice through system hypothesis surface controlling rate, thus determines the final signal control plan
該系統以路網中的閉合環路作為控制子區，應用信號參數優化模型計算參數組合，對不同閉合環路進行協調控制形成預選方案，通過系統設定的面控率進行判斷、選擇，確定最終信號控制方案。 -
The paper summarizes the development of the control technology of paver ' s vehicle system ; discusses the feasibility of the plc application to vehicle system ; calculates and examines the working resistance and power of the control system as well some concerning parameters of the hydraulic system ; builds the driving system velocity characteristic ; accomplishes the hardware design and the software design according to the functional requirements of vehicle system and the features of plc ; adds the pid compensation to the closed circuit velocity control ; sums up the mathematic model of hydraulic pump - motor system and defines the controller parameters ; in the end, the simple dynamic simulation basing on the control system model and the simulative test are carried out to testify the reasonableness and the feasibility of the designed plc control system
本文總結了攤鋪機行駛控制技術的發展，討論了plc應用於行駛系統的可行性；計算和校驗了控制系統工作阻力、功率及液壓系統有關參數；建立了行駛驅動系統的速度特性；結合行駛系統的功能要求及plc的特點，完成了控制系統的硬體設計和軟體設計；對其速度閉環控制，引入了pid校正環節；歸納了液壓泵?馬達系統的數學模型，確定了控制器的控制參數；最後對控制系統模型進行了簡單的動態模擬和plc模擬試驗，初步證實了控制系統設計的可行性和合理件。 -
In the design of real - time control system, the paper takes three - phase full - bridge mosfet inverter as the real - time control main circuit, and adopts a control scheme with 120 ? switching mode combined with half - bridge pulse width modulation ( pwm ), which would avoid straightthrough short of a certain bridge. phase current is detected by single current sensor ; three - phase position signals generated by position sensors could not only supply commutation information for inverter, but also be used for speed detecting based on signals " period measurement, which makes the speed sensor unnecessary. the whole control system adopts speed and current dual closed - loop control strategy in order to construct a high performance rare - earth permanent magnetic brushless dc motor ( repm bldcm ) full - digital real - time control system
在實時控制系統的設計中，本文以三相全橋mosfet逆變電路作為實時控制主電路，採用120導通方式結合半橋pwm調制的控制方案，從而有效地避免了橋臂的直通短路；本文用單電流傳感器實現對相電流的檢測，來自位置傳感器的三相位置信號不僅為逆變電路提供換相信息，而且也用於基於信號周期測量的轉速檢測，這樣就省去了速度傳感器；系統採用的是速度、電流雙閉環控制策略，力求構建高性能的稀土永磁無刷直流電動機全數字實時控制系統。
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