直接數位控制 的英文怎麼說

中文拼音 [zhíjiēshǔwèikòngzhì]
直接數位控制 英文
ddc direct digital control
  • 直 : Ⅰ形容詞1 （成直線的; 硬挺的） straight; stiff 2 （跟地面垂直的; 從上到下的; 從前到后的） erect; v...
  • 接 : Ⅰ動詞1 （靠近;接觸） come into contact with; come close to 2 （連接; 使連接） connect; join; put ...
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 位 : Ⅰ名詞1 （所在或所佔的地方） place; location 2 （職位; 地位） position; post; status 3 （特指皇帝...
  • 控 : 動詞1 （告發;控告） accuse; charge 2 （控制） control; dominate 3 （使容器口兒朝下 讓裏面的液體慢...
  • 制 : Ⅰ動詞1 （製造） make; manufacture 2 （擬訂; 規定） draw up; establish 3 （用強力約束; 限定; 管束...
  • 直接 : direct; immediate
  • 數位 : numerical digit; digit; place; digit position
  • 控制 : control; dominate; regulate; govern; manage; check; cybernate; manipulate; encraty; rule; rein; c...
  1. Depend on the comprehensive analysis and study of the structure, principle, and exterior characteristic of the motor, through the methods of system modeling and digital simulation analysis, two kind of control device that work for the low voltage ( lvdc ) and the high voltage ( hvdc ) in avigation are researched respectively. point to the control technique of close - loop speed stabilization at a limited adjustment speed range, we bring out the close - loop speed control method that using the rotor position sensor indirectly measure the speed of the motor

    在全面分析了稀土永磁無刷直流電動機的結構特點、工作原理、運行方式以及外部特性的基礎上，通過系統建模和數字模擬分析，分別針對航空低壓直流（ lvdc ）和高壓直流（ hvdc ）兩種電動機構用永磁無刷電動機，在小范圍轉速連續調節下的閉環穩速控制技術進行了詳細理論研究，提出了利用轉子位置傳感器信號間接測量電機轉速進行電機轉速閉環穩速控制的策略。
  2. This machine is used for straight - line bevel cutting and bevel grinding and polishing for flat glass, in certain condition, it can be also used in bevel cuttig, bevel grinding and polishing for soft stone panel. the contrilling system adopts plc, it can accomplish automatic grinding cutting after entering processing parameter, convery speed adopts speed adjustment of fre quency conversion, direct drive of wheel head motor, all motions for joining in parameter adjustment completely adopt straight - rolling guide - track with front beam and wheel head lifting lntegrally. the transmission of input and output adopts synchronization tooth belt and photo - electricity switch positioning, and position limitation of two pass is much more reliable

    Sxm371pa型玻璃直線斜邊磨邊機是用於玻璃直線斜邊斜切，斜磨及光拋的專用設備，在一定條件下也可以用於軟石板材的斜切斜磨及拋光。控制系統採用plc控制。輸入加工參數后可自動完成磨削傳送速度採用變頻調速，磨頭電機直接傳動，所有加工參數調整運動副全部採用直線滾動導軌，前梁與磨頭整體升降，輸入輸出傳送採用同步形帶，光電開光定位，雙行程限位更安全可靠。
  3. The colliculus is located in the back urethra like a hillock with many canals export of the prostate gland at two sides, and it has abundant nerves, which directly control ejaculation and strengthen orgasm

    精阜炎：精阜也稱尿道嵴，位於后尿道模部，形似丘狀突起，兩側有數個前列腺開口。在生理上精阜有豐富的神經，直接控制射精活動和增強性快感。
  4. The automation of coal flotation has been wandering for many years in china. the production efficiency is relatively low because of the feed forward control which adds the flotation reagent based on the fine coal in feed slurry, ignoring the quantity and quality of the products. aiming at this problem, method of measuring the flotation technical parameters was studied, the slurry level meter and the slurry ash - measuring device were worked out, and the computer control system of the coal flotation was designed. the feedback control was realized by using the fuzzy logic control control technology to regulate the reagent addition and the slurry level in the flotation tank according to the concentrate ash content detectedby the coal slurry ash - measuring device developed. the industrial experiment indicates that the performance inedxes of the coal slurry ashmeasuring device have come up to the advanced levek of the world. the application of the detection and control system in huaibei coal preparation plant results in a high concentrate recovery, a decrease of the reagent consumption, ensuring a highly efficient operation

    浮選自動化在我國多年來徘徊不前，一直採用根據入浮煤漿中的干煤泥量來確定加藥量的前饋控制方法，而不直接以產品的數質量指標作為控制目標，導致浮選生產效率較低.針對上述問題，研究了浮選工藝參數的檢測方法，開發了浮選漿位儀和煤漿測灰儀，設計了浮選計算機控制系統，它根據煤漿測灰儀旁線檢測的精煤灰分，運用模糊控制技術，通過調整浮選藥劑添加量和浮選機漿位，來實現浮選過程的反饋控制.工業性試驗表明，煤漿測灰儀的性能指標接近國外先進水平.煤泥浮選測控系統在淮北選煤廠的現場使用，使浮選生產在精煤灰分合格的前提下，得到了較高的產率，並降低了藥劑用量，從而保證選煤廠高效率地運行
  5. Abstract : the automation of coal flotation has been wandering for many years in china. the production efficiency is relatively low because of the feed forward control which adds the flotation reagent based on the fine coal in feed slurry, ignoring the quantity and quality of the products. aiming at this problem, method of measuring the flotation technical parameters was studied, the slurry level meter and the slurry ash - measuring device were worked out, and the computer control system of the coal flotation was designed. the feedback control was realized by using the fuzzy logic control control technology to regulate the reagent addition and the slurry level in the flotation tank according to the concentrate ash content detectedby the coal slurry ash - measuring device developed. the industrial experiment indicates that the performance inedxes of the coal slurry ashmeasuring device have come up to the advanced levek of the world. the application of the detection and control system in huaibei coal preparation plant results in a high concentrate recovery, a decrease of the reagent consumption, ensuring a highly efficient operation

    文摘:浮選自動化在我國多年來徘徊不前，一直採用根據入浮煤漿中的干煤泥量來確定加藥量的前饋控制方法，而不直接以產品的數質量指標作為控制目標，導致浮選生產效率較低.針對上述問題，研究了浮選工藝參數的檢測方法，開發了浮選漿位儀和煤漿測灰儀，設計了浮選計算機控制系統，它根據煤漿測灰儀旁線檢測的精煤灰分，運用模糊控制技術，通過調整浮選藥劑添加量和浮選機漿位，來實現浮選過程的反饋控制.工業性試驗表明，煤漿測灰儀的性能指標接近國外先進水平.煤泥浮選測控系統在淮北選煤廠的現場使用，使浮選生產在精煤灰分合格的前提下，得到了較高的產率，並降低了藥劑用量，從而保證選煤廠高效率地運行
  6. The scm finishes the data collection and receives the order from the pc and control stage furniture directly. the pc processes the data from the scm and sends orders to the scm at the same time to complete the centralized management and most excellent control

    單片機完成數據採集和接收pc機下傳命令，並直接控制舞臺設備的運行， pc機將下位機傳過來的數據進行處理同時傳送各種控制命令給單片機，以實現集中管理和最優控制。
  7. The stepping motor is the important component of the numerical control system, because of the characteristic such as high precision, easily controlling, localization accurate, working rapidly and reliable, and can accept the digital signal

    步進電機以其精度高、控制靈活、定位準確、起停迅速、工作可靠、能直接接受數字信號的特點，成為數控系統中的重要執行部件。
  8. By analyzing the disadvantage of the parallel rendering load balancing methods based on geometry data analysis, a load balancing method based on time - space conversion is presented which uses time value as the measure of a rendering node ' s work load and uses space value to control the distribution of work load. a reasonable algorithm is used to convert time value to space value

    在分析已有的基於幾何數據分析的并行繪制負載平衡演算法的基礎上，提出了浙江大學博士學位論文基於時空轉換的負載平衡演算法:以時間值直接作為繪制節點負載的度量，以空間值控制負載的分配，通過適當方法完成時間值到空間值的轉換。
  9. This thesis presents an effective way to design pid controller through a combination of adverse deduce and genetic algorithm. the relationship between pid parameter and the root of the characteristic equation of the closed loop control system has been found out directly

    本文直接找出pid參數與閉環控制系統的特徵方程的根之間的關系，只要使特徵方程的根在z平面的單位圓內任意取值，然後再求出相應的pid參數，則閉環控制系統必然是穩定的。
  10. In this system, it is master - slave structure between pc and dsp. dsp transfers data to pc by adopting the dmac ( direct memory access controller ) in pc. the thesis dwells on every part of hardware circuit and main technology such as dsp, the transferring mode of dma ( direct memory access ), etc subsequently, it introduces the software design of the sampling system and user interface

    該最小系統製作成高速數據採集卡，插入pc機的isa總線插槽中， pc機與dsp構成主從結構，系統中tms320f240dsp作為pc機的下位機，採用pc機內的dmac （ dma控制器）通過dma （直接存儲器存取）方式把採集的數據傳送到pc機進行處理。
  11. First this chapter analyses the function of modem in theory, as well as communication principle of computer and modem. second designs program of serial communication using mscomm of vb 6. 0, by reason that mapbasic is the second development tool of mapinfo and a programmable language of developing map information applications, it is unable to directly read datas of serial port used by modem, unless by means of external program. finally using dde technology completes transmitting real - time orientation data between mapinfo and serial communication program of vb

    本章首先從理論上分析了modem功能及與計算機的通信原理；其次利用v86 . 0的通信控制項mscomm開發串列程序，由於mapbasic是mapinfo二次開發工具，是一種編制地圖信息應用程序的編程語言，不能直接讀取串列通訊埠數據，它必基於gsm網和pstn網的移動終端和遠程主機的實時數據通信系統的技術研究須藉助外部程序來完成與modem的串列通訊；最後利用ode技術來實現maplnfo與vb串列通信程序實時定位數據傳輸。
  12. This paper goes on with analysis of the phased array radar calibration theory and compare of different schemes, then the best is adopted. 2 mhz digital circuit mainly composed of dds ( direct digital synthesis ) chip, which carries out the shift of the phase and the limit of the amplitude, has been designed and debugged successfully. it is used to substitute for the conventional phased shift circuit and amplitude limiting circuit which work at the radio frequency, so the all - digital transmit channel of phased shift array radar is achieved

    本論文研究的重點是：針對傳統相控陣雷達系統收發（ t r ）組件中的移相和限幅功能均在射頻段完成，大膽利用直接數字合成（ dds ）晶元組成頻率在2mhz左右的數字電路代替傳統相控陣雷達在射頻段進行移相和限幅的電路，從而組成全數字發射通道，使對相位和幅度的控制和調試更方便快捷，並設計具體的電路驗證此方案的可行性。
  13. Compared to polynomial models widely used, rfm is essentially a more generic and expressive form of various sensor geometry models. in this paper the aspects of rfm such as the theory, algorithm and characteristics are studied

    包括利用控制點確定參數、目標點定位、多項式次數的選擇、與直接線性變換（ dlt ） 、多項式模型的關系等，並用於spot和某衛星全色影像定位特性的研究。
  14. Two perpendicular polarized light states and a no - light state are applied to express information in the ternary optical computer. the three states are transformed via two - dimension liquid crystal element and polarizators, and ternary arithmetic operation and ternary logical calculus completed directly in this way. the ternary optical computer will possess enormously number of bit ( easy to 104 ), light processor, light transmission path and electric control system

    三值光計算機用相互垂直的兩個線偏振光和零光強三個獨立的光狀態表示信息；用二維液晶器件和偏振器實現此三個狀態間的轉換；採用三進制算術運算；直接處理三值邏輯運算；擁有巨大的數據位數（容易超過10 ~ 4位） ；具有光運算、光傳送、電控制等結構特色，具有很強的空間、時間并行性。
  15. Firstly, for the intelligent structure ' s active bars, a constant output velocity feedback control law is dissipation energy due to control action and the optimal mathematical model with the reliability constraints on dynamic stress and displacement was built

    以直接輸出速度反饋作為閉環控制律，基於最大耗散能準則，建立了以主動桿配置位置和控制系統增益為設計變量，具有動力響應（應力響應和位移響應）可靠性約束的壓電智能桁架結構主動桿優化配置的數學模型。
  16. The work process is that the gps subsystem receives gps data from gps satellites, disposes and sends them to the main control console ; the main control console matches gps position data with digital map and displays on the lcd of the system. if the system wants to communicate with the monitoring and dispatching center or user wants to communicate with others, the gsm / gprs subsystem can be used. the main control console consists of arm microprocessor, linux operating system and minigui

    系統的工作過程可描述為: gps子系統接收來自gps衛星的定位信息，處理后將定位信息傳送給主控平臺;主控平臺將實時定位信息與電子地圖匹配並通過直觀的方式顯示在系統的lcd上;如果車載導航系統需要與監控中心進行數據通信或者用戶需要和監控中心或第三方進行通信，則可通過主控平臺來控制gsm / gprs子系統來實現，通信方式包括簡訊息通信、語音通信、 gprs通信。
  17. The system is mainly made of antenna seat and antenna controller. the antenna seat adopts humorous wave technique and can be directly connected with special computer and achieve numeric control, which has high resolving power of scanning and exact orientation

    該系統主要由天線座和天控器兩部分組成，天線座採用諧波傳動技術，可直接與專用計算機對接，實現數字控制，掃描解析度高，定位準確。
  18. Then the message - based flow control of main monitoring program in program - controlled instrument is brought forward. with the modeling and analyzing tools of the petri net and boolean matrix, the main monitoring program design method of a multi - dsp system is presented with the example of digital i / o wp module. chapter 6 illustrates the basic structure and design approaches to wp virtual instrument ' s software according to the vxi plug & play ( vpp ) specifications

    第五章提出了向共享總線的多sharc系統執行「直接宿主機導入」 dsp監控程序的新方法，隨后又提出了基於消息的程式控制儀器主監控程序控制的概念，並以vvp數字i o模塊為例，描述了利用petri網和布爾矩陣為主要建模和分析的浙江大學博士學位論文工具，實現了多dsp程式控制儀器主監控程序設計的新方法。
  19. The paper is the project named " theory of dynamic precision synchronization traverse and research of realization methods for linear servo dual position loops system ( no - 50075057 ) " as the background, which is supported by national natural science foundation of china drive directly by linear permanent magnet synchronous ac motor, the controlled plant eliminates middle drive parts and avoids the effects of the mechanical transmission chains from rotary motions to linear ones

    本文以國家自然科學基金資助項目《直線伺服雙位置環動態精密同步進給理論和實現方法研究（ no 50075057 ） 》為背景，針對直線同步進給提出了一種新的控制方案：模型參考自適應控制。機床採用永磁直線同步電動機直接驅動，省掉了中間的傳動環節，消除了機械傳動鏈的影響；又因永磁直線同步電動機採用高能永磁體，具有電磁推力強度高、損耗低、電氣時間常數小、響應快等特點。
  20. Direct digital synthesizing is a new frequency synthesizing technology, which adopts phase increment controlled by digital. it has so many virtues such as high frequency relution, fast frequency switching ability, continuous phase, low phase noise and integration easily for its numberic operation that has been adopted widly

    直接數字合成dds （ directdigitalsynthesize ）是新一代的頻率合成技術，它採用數字控制信號的相位增量技術，具有頻率解析度高（可達mhz至hz量級） ，頻率切換快（可達幾十ns量級） ，頻率切換時相位連續和相位噪聲低以及全數字化易於集成等優點而被廣泛採用。
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