automatic frequency control system 中文意思是什麼

automatic frequency control system 解釋
頻率自動控制系統
  • automatic : adj. 1. 自動的；機械的。2. 【生理】自動性的，無意識的。n. 1. 自動機械；自動裝置。2. 自動手槍。
  • frequency : n. 1. 屢次，頻仍，頻繁。2. （脈搏等的）次數，出現率；頻度；【物理學】頻率，周率。
  • control : n 1 支配，管理，管制，統制，控制；監督。2 抑制（力）；壓制，節制，拘束；【農業】防治。3 檢查；核...
  • system : n 1 體系，系統；分類法；組織；設備，裝置。2 方式；方法；作業方法。3 制度；主義。4 次序，規律。5 ...
  1. When the frequency of signal is below to kilohertz quantitatively, the preactical test results of this system indicated that it is efficiency in signal process of biomedicine, automatic control, and audio etc. the purpose of design has been realized by the system ultimately

    實際測試結果表明，該系統對于處理khz數量級以內的生物醫學信號、自動化控制信號以及音頻信號的效果基本達到了預期的設計要求。
  2. The form display in chinese and can be operated easily. i has done the following works : ( 1 ) have innovated a computer control system of double - side automatic tig erect welding of aluminium alloy ; ( 2 ) analysed the key technics of the control system completely ; ( 3 ) designed the computer control system ; ( 4 ) solved some possible existing craftwork problems when welding the aliminium alloys ; ( 5 ) solved the existing problems of erect welding such as gravity ; ( 6 ) by the designing of hardware and software, the paper has solved the problem of high frequency interference to the computer control system, such makes the system work steadily ; ( 7 ) established the mode of imitating the dynamic process of welding

    本文主要在如下幾個方面做了一些工作： （ 1 ）本文創新性地設計了鋁合金雙面自動tig立焊計算機控制系統（ 2 ）全面地分析了控制系統實施過程中的關鍵技術； （ 3 ）微機控制系統的設計； （ 4 ）解決鋁合金在自動焊接過程中工藝上可能存在的問題； （ 5 ）解決立焊工藝中由於重力等導致的問題； （ 6 ）通過硬體和軟體的設計，克服高頻干擾，從而確保控制系統的可靠性； （ 7 ）設計的控制系統可以完成定位焊接，自動焊接和模擬焊接； （ 8 ）焊接動態過程的辯識建模及系統模擬。
  3. The machine is composed of an automatic roll - releasing device, connecting platform, an automatic margin - cutting mechanism, an automatic tube forming device, a high frequency welding mechanism, the vertical and horizontal traction devices, an automatic synchronous revolving cutting mechanism and a computer control system

    本機組主要包括：自動放卷裝置，對接平臺，自動切邊機構，自動成型裝置，高頻焊接機構，垂直、水平牽引機構，自動控制跟蹤旋切裝置及人機界面控制系統。
  4. Automatic control : the machine is programmable to run subject to the technique requirements and controlled by a set of equipment like plc, touch - screen monitor, frequency converter, dynamic braking, air - powered or hydraulic system programs are modifiable with individualized interface

    自動化人機界面控制：通過plc ，觸摸屏、變頻器控制、能耗制動、氣動或液動系統，機器可按工藝要求設計相應的工作程序，並按所設定的程序自動運行，採用先進的應用程序，可以更方便的修改程序。
  5. The full automatic mechanical arm is built for letoff and wrap - up systems. the extruding quantities of each unit are controlled by frequency motor, the forming system adopts the synchronous group control. the digital displays are used for letoff, wrapup, extruding, drawing, line speed and meter recording

    放卷、收卷設置機械手全自動控制；各組擠出量由變頻器控制電機來完成，成型系統由一臺變頻器群控三臺成型牽引電機，與機械配合達到同步，該設備的放、收卷、擠出、牽引、線速、計米全部由數字化顯示。
  6. The hardware circuit design include : industrial control computer configuration, selection of industrial control board type, design of the power supply and monitoring interface circuit, design of signal processing interface circuit ( the constant current source circuit, the time base signal processing circuit, the processing circuit for the signal to be measured ), design of panel control circuit, design of the system self - checking circuit, and etc. the program flow hart include : main program flow chart, system boot - strap self - checking program flow chart, manual static testing program flow chart, semiautomatic static testing program flow chart, automatic static testing program flow chart, dynamic testing program flow chart, transient testing program flow chart, source voltage and current monitor program flow chart, investigate function testing program flow chart, and etc. the measure system offers six working power supplies, the signal of time base, the signal of constant current source, sine wave signal and step to leap signal, and measures the frequency of the output pulse signal of the wide range pulse convert circuit accurately under three kinds of different test state ( static form, dynamic form and transient form )

    硬體電路設計包括：工控機配置、工控板卡選型、產品電源及監控介面電路設計、信號處理介面電路（恆流源電路、時基信號處理電路、被測信號處理電路）設計、面板控制電路設計、系統自檢電路設計等。程序流程圖包括：主程序流程圖、系統開機自檢程序流程圖、手動靜態測試程序流程圖、半自動靜態測試程序流程圖、自動靜態測試程序流程圖、動態測試程序流程圖、暫態測試程序流程圖、電源電壓和電流監控程序流程圖、研究功能測試程序流程圖等。測試系統提供六路工作電源、時基信號、恆流源信號、正弦波信號和階躍信號，並對三種不同測試狀態（靜態、動態、暫態）下大量程脈沖變換電路輸出脈沖信號的頻率進行精確測量。
  7. Working at automatic mode the system can transmit the data to computer through the parallel port which work at epp ( enhanced parallel port ) mode. then the computer shows the characteristic relation curves and acquires the characteristic arithmetic expression. the sampling frequency reach to 4khz, the core of control system is microcontroller uint ( mcu ) 89c51 ， the data acquisition is 12 bite

    也可以工作在自動方式下通過并行介面（工作于epp模式） ，把測量到的數據輸入計算機，在計算機上顯示特性參數間的關系曲線，以及求出參數間的數學關系式，其采樣頻率可達4khz 。
  8. By means of variable frequency and adjustable speed, the variable air volume air conditioning automatic control system saves energy through setting different static pressure values in different time periods

    變風量空調控制系統以變頻調速為手段，分時段設定靜壓值以實現節能。
  9. The completed automation system not only can perform the starting, connecting, frequency and load modulating, disconnecting and stopping functions automatically but also can perform the monitoring, alarming, automatic recording, and performance evaluating functions, etc. in with the dispersed control and centralized management, the system achieves high running effect

    最終實現的電站自動化系統不僅可以自動完成各發電機組的啟動、並車、調頻調載、解列和停機等操作，還可以實現電站運行的監控、報警、自動抄表和運行性能評估等功能。該系統以控制分散、管理集中為指導思想，運行效率得到提高。
  10. In such way, the frequency, the virtual value, the harmonic and power factor are acquired. it can achieve the intelligent control by way of cooperating with master station automatic apparatus system through adopting rs - 485 communication standard

    同時根據采樣值系統計算了頻率、有效值、諧波、功率因數等電量，並通過rs - 485通信口與二級子站微機相配合，達到智能控制的作用。
  11. With these advantages of energy - saving, low maintenance and easy automatic control, variable - frequency speed regulation technology has been widely used. the author in this master paper analyzes in detail and deeply all kinds of the speed adjustment system of portal crane at home and abroad, and confirms the scheme of variable - frequency speed regulation of m10 ton portal crane at last

    變頻調速具有節能、維護工作量小自動控制性能好等優點，得到廣泛應用。本文對目前國內外門機各種機調速系統進行了深入和詳盡的對比和分析，最終確定了m10t門機的變頻調速改造方案。
  12. Industrial controlling equipment and its system, sensor, converter, factory / process automation technology and equipments, distribution control system ( dcs ) / analytical controlling system / intelligent controlling system / process automation controlling system / automatic controlling system / test and control system / supervision system / numerical controlling system / digital display equipment / frequency speed control, servo - control, computer aided design and control, various specialized systems, power transmission techniques, programmable controller / hydraulic pneumatic element, automatic storage retrieval system, logistics, other electronic devices, communication, electric controlled equipments, various fitting, whole - set system and installation

    工業控制機及其系統、傳感器、變頻器（培訓） 、工廠/過程自動化技術與設備、集散控制系統/分析控制系統/智能控制系統/過程自動化控制系統/自控系統/測控系統/監控系統/數控系統/數顯設備/變頻調速與伺服控制、計算機輔助設計與控制及各類專用系統、動力傳動技術、可編程序控制器/液壓與氣動元件、自動化立體倉庫、物流、其它有關電子、通訊、電控設備、各類配件及成套系統和裝置。
  13. With the aid of these blocks, it is convenient and flexible to make up different kind of automatic - controlled simulating system and so to accomplish different kind of automatic adjusting task. this paper is focused on the construction of the simulation model of ccs by using the contrived control section model. the ccs employs advanced direct energy balance control strategy and can simulate different running patterns such as turbine following boiler pattern, boiler following boiler pattern, etc. two independent control loops : power control and frequency control, are used in the contrivance of deh and they are separately corresponding to the normal condition and the abnormal condition

    本文利用開發的控制環節模塊，著重建立了協調控制系統的模擬模型，該協調控制系統採用了先進的直接能量平衡控制策略，並能模擬機跟爐、爐跟機、機爐協調、手動以及定壓和滑壓等運行方式；開發的功頻電液系統模型採用了功率控制和頻率控制兩個獨立的控制迴路，能夠在機組正常運行和啟停時對汽輪機進行控制。
  14. On the basis of analyzing status in quo of the waterworks in our country, this paper designs a suit of constant pressure water supply automatic control system by using variable frequency speed - regulating technology based on plc

    本論文結合我國中小城市供水廠的現狀，設計了一套基於plc的變頻調速恆壓自動控制供水系統。
  15. Abstract : a fast drag system is designed to simulate the law of speedvariations of a certain power system engine in the process of its start by means of electric power drag and the theory of automatic control and through adopting a new type of electric machine and frequency - change techniques, thus enabling the system to achieve quick start, instantaneous breakdown and accurate following of the electric machines speed variations curve set in advance at will

    文摘:運用電力拖動與自控理論，採用新型電機及變頻技術，設計一種快速拖動系統藉以模擬某動力系統發動機啟動過程轉速變化的規律，使該系統能夠達到快速啟動，瞬間制動，精確跟隨事先設定的電機轉速變化曲線的目的。
  16. On the basis of dynamic control requirements of inertial vibrating feeder for automatic conveying system, and dynamic characteristics of inertial vibrating feeder different from those of other machine, this paper provided the selection and calculation of the frequency control scheme for the feeder

    根據自動化的物料輸送系統對慣性振動給料機動態調節的要求及給料機不同於其他其它機械的動力學特點，給出了慣性振動給料機變頻調速方案的選擇和計算。
  17. The article in lead - zinc mineral tailing transmission pumps electric motors automatic control system of huang - shaping, for example, a detailed account of the system frequency conversion governor, ultrasound liquid position controller design models, debugging points and parameters set methods, and energy saving effect of a careful analysis

    摘要文章以黃沙坪鉛鋅礦尾礦輸送泵電動機自動控制系統為實例，詳細介紹了系統中變頻調速器、超聲波液位控制器的設計選型、調試要點和參數設定方法，並對節能效果進行了認真分析。
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