直接信用控制 的英文怎麼說
中文拼音 [zhíjiēxìnyòngkòngzhì]
直接信用控制
英文
direct credit 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 ...
- 用 : Ⅰ動詞1 (使用) use; employ; apply 2 (多用於否定: 需要) need 3 (敬辭: 吃; 喝) eat; drink Ⅱ名...
- 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
- 控制 : control; dominate; regulate; govern; manage; check; cybernate; manipulate; encraty; rule; rein; c...
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A lot of domains are involved with, such as theory of electromagnetism, electrotechnics, electronics, measurement of electromagnetism. signal analysis, mechanics, cybernation, biomedicine, materials, technics, ect. the study of emc is very fargoing and the problem of emc is very complex
它涉及的基礎知識面非常寬廣,直接應用和涉及的知識有電磁場理論、電工原理、電子技術、電磁測量、信號分析、機械結構、自動控制、生物醫學、材料及工藝等等。Step - nc ( iso14649 ) expends step into the area of cnc and renews the data interface between cax and cnc, which helps cnc system to use data models of products in three dimensions according with step directly in order to output nc programs then control machines directly, eliminate choke points of the information stream between cax, such as cad, capp, cam, cae, ped, erp and so on, connect the design product information and manufacturing product information on the base of step in the form of object - orientation, and change the traditional movement and switch control - orientation numerical programs into object - orientation programs
Step - nc ( iso14649 )將step擴展至cnc領域,重新規定了cax與cnc之間的介面,其目的是: cnc系統能夠直接使用符合step標準的cad三維產品數據模型,直接產生加工程序來控制機床;在step的基礎上以面向對象的形式將產品的設計信息與製造信息聯系起來,消除cax (如cad 、 capp 、 cam 、 cae 、 ped 、 erp等)與數控系統之間信息流瓶頸;將傳統的面向運動和開關控制的數控程序改變為直接面向加工對象的數控程序。The results of research reveals the variation disciplinarian and the affected factor, defines the factor limiting the urban regional development. all these offer scientific references for reasonable city planning, municipal building project planning, reasonable arrangement of land use, the confirmation of land use intensity and the improving land use benefit. and a series of methods we have explored can apply the practical manipulation of grading and assessing urban land, which contribute to enhance working efficiency, shorten the time of evaluation, enhance the updating of urban land price, establish a system of dynamic superviso ry control and examination, and enhance accuracy and objectivity of urban land - rated evaluation
再由球形檢驗和主成份分析、信度分析、多元回歸分析的技術路線,逐層遞深地解譯影響城市地價的主要因素及相互數量關系,其研究結果揭示了城市地價的變化規律和影響因素、明確了限制城市區域發展的因素,為合理的城市規劃,市政建設項目規劃,合理安排土地用途,確定土地利用強度,提高土地利用效益等提供了科學依據,同時探索的系列化方法可直接應用於城市定級估價的實際操作中,有利於提高工作效率,縮短估價時間,提高城市地價的現勢性,建立地價動態監控和測算系統,又可提高城市定級估價的準確度和客觀性,在理論上、學術和實踐上均有積極意義。In direct torque control system, speed sensors are usually used to survey the speed of motor, but speed sensors have many disadvantages, such as inconvenient fixing and maintenance, inaccurate precision. at present it is an efficient and feasible method to estimate speed by using software instead of hardware
以往在直接轉矩控制系統中採用速度傳感器檢測速度信號,由於測速裝置具有安裝不便、維修困難、測量精度差等缺點,因而採用軟體代替硬體檢測設備辨識速度,即進行無速度傳感器的設計,不失為一種有效可行的速度辨識方法。Electrical and mechanical interface characteristics and line control protocol using communication control characters for serial data link between a direct numerical control system and numerical control equipment employing asynchronous full duplex transmission
電子和機械界面特性和在直接數字控制系統與用同步完全雙向傳輸的數字控制設備之間的系列數據鏈接的通信控制字元的線路控制協議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。Hardware design uses high - speed digital signal processor tms320lf2407a as the key control part. software design adopts hexagon stator flux scheme and round stator flux scheme respectively. after the system is set up, the direct torque control method is realized for a 0. 12kw winding asynchronous motor
最後根據以上的討論和實際應用中的情況,分別採用六邊形磁鏈方案和圓形磁鏈方案,以高速數字信號處理器ths320lf2407a作為核心控制部件,在一臺0 . 12kw的繞線式異步電機上實現了異步電機直接轉矩控制。On the other hand, atm is connection - oriented, the implementation of cac function for svc depends on atm signaling system. however, as a result of having no necessary functions of call and connection control, the protocol stacks for atm signa ling defined by itu - t can not realize the function of cac and can not be used directly in the atm equipment
另一方面, atm是面向連接的,交換型虛連接( svc )真正體現了atm技術的靈活性,與svc相應的cac功能則依賴于atm信令系統來完成,然而itu - t所定義的atmuni和nni信令協議棧由於缺乏必要的呼叫/連接控制功能,從而無法對cac進行支持且無法直接應用於各種atm設備中。Because direct torque control requires very high performance of real - time, the popular microcomputer core dsp is used as controller in the design of hardware. its high speed of running is suitable for the experiment. in the main circuit, there is a highly integrated power element : ipm as inverter, which includes seven igbt, has high switch frequency and fault diagnosis function
在本控制系統的具體實現上,由於直接轉矩控制對實時性要求很高,因此在硬體方面,採用了目前比較流行的數字信號處理器( dsp )作為系統的控制器,其處理速度高的特點正好符合本實驗的需要:在主電路中,本系統使用了集成度高的功率器件:智能功率模塊( ipm ) ,作為逆變環節,其集成了七個igbt ,實現了高開關頻率逆變以及故障診斷的功能,從而使控制系統的體積大大縮小、控制更加靈活。Due to the direct torque control requires very high performance of real - time, the popular microcomputer core dsp is used as controller in the design of hardware. its high speed of running is suitable to the experiment. in the main circuit, there is a highly integrated power element : ipm as inverter, which includes seven igbt, has high switch frequency and fault diagnosis function
在本控制系統的具體實現上,由於直接轉矩控制對實時性要求很高,因此在硬體方面,本課題採用了目前比較流行的數字信號處理器( dsp )作為本實驗的控制器,其處理速度高的特點正好符合本實驗的需要;在主電路中,本系統使用了集成度高的功率器件:智能功率模塊( ipm ) ,作為逆變環節,其集成了七個igbt ,實現了高開關頻率逆變以及故障診斷的功能,從而使控制系統的體積大大縮小、控制更加靈活。In dtc system, the concept of space vector is introduced to analyze and control the ac motor, the electromagnetic torque and flux are calculated and controlled in the stationary coordinate, and the optimal pwm gating signals are generated to control the inverter to acquire high dynamic torque according to the output of the bang - bang regulators
直接轉矩控制採用空間矢量的概念來分析三相異步交流電動機的數學模型和各物理量,直接在靜止坐標系下計算與控制交流電動機轉矩和磁鏈,藉助于離散的兩點式調節產生pwm信號,直接對逆變器的開關狀態進行最佳控制,以獲得轉矩的高動態性能。As to large torque ripple in direct torque control ( dtc ) of induction motors at low speed, a kind of new fuzzy neural networks ( fnn ) approach was proposed based on the merits that fuzzy control absorbs man ' s empirical thinking and neural networks have self - organization and self - study ability
摘要針對異步電動機直接轉矩控制低速轉矩脈動大的間題,充分利用模糊控制吸收入的經驗思維,以及神經網路對信息的處理具有自組織、自學習的特點,提出一種新的模糊神經網路控制方法。It can be used to measure mechanical and electrical parameters of relay ; because the reliability of electromagnetic relay is very important to the safe running of the control system, this paper introduces a reliability index for micro - electromagnetic relay. the compliance test - plan of success ratio for it is studied through the application of bayesian theory. the paper compares the methods of classical statistical theory and bayesian theory for making sampling plan of success ratio
此外,本文還介紹了由msc - 51單片機控制的繼電器參數測試系統的原理和方法,能對機械參數和電氣參數進行測試;由於電磁極化繼電器可靠性的高低將直接影響控制系統的安全運行,研究了用bayes理論設計電磁繼電器產品的成功率驗證實驗方案,並與經典方法設計的成功率驗證方案進行了比較,在特定的先驗信息下, bayes方案所需的樣本容量較小。The direct torque control theory is a kind of new control method after vector control theory in ac control field. it calculates and controls the torque and the flux of ac electromotor in stator coordinate using the voltage space vector. adopting the stator magnetism field direction method, it recurs to discrete pang - pang control producing pulse width modulation signal and controls the switch state of the transductor when better quality steady - state performance is produced
直接轉矩控制技術是繼矢量控制技術之後交流調速領域中新興的控制技術,它採用空間矢量分析的方法,直接在定子坐標系下計算並控制交流電動機的轉矩和磁鏈,採用定子磁場定向,藉助于離散的兩點式控制產生脈寬信號,直接對逆變器的開關狀態進行最佳控制,以獲得轉矩的高動態性能。Once more, analyzed the general monetary policy ( as a total quantity policy ) and the selective monetary policy ( as a structure policy ) ’ s effectiveness on the regulations of the continuous rising of the real estate prices separately. in the studies of the general monetary policy : analyzed the effectiveness of the interest rate policy to regulate and control the real estate prices, and then revealed the inner links between the real estate prices and several important macroscopic economical variables such as cpi, currency supply, gdp and so on. in the studies of the selective monetary policy : focused on the significant implications of the real estate credit control and preferential interest rates on the real estate prices
再次,從一般性貨幣政策和選擇性貨幣政策兩個角度對我國貨幣政策調控房價是否有效這一問題進行了剖析:在一般性貨幣政策即總量政策調控房地產市場價格有效性的研究中,分析了直接運用我國利率政策調控房地產市場價格的有效性問題,然後側重揭示了cpi 、貨幣供給量、 gdp等幾個重要的宏觀經濟變量與房地產市場價格的內在聯系;在選擇性貨幣政策即結構政策調控房地產市場價格有效性的研究中,側重分析了不動產信用控制與優惠利率對我國房價走勢的深遠影響。The digital valve with stepping working mode, has advantages of digital control. it receives the digital signal to achieve the feedback control so it is applied to feedback control system. and it has novel structure, excellent anti - jamming capability, flexible and reliable control performance
該閥充分利用了直接數字控制的突出優點,由步進電機驅動,直接接收數字信號實現控制,並適用於閉環控制系統,其結構新穎,抗干擾能力優越,控制靈活可靠。This paper studies the design of precept of missile ' s wing and rudder load simulation system whose core is digital signal processor ( dsp ) and dtc servo driver
本文研究了以數字信號處理器( dsp )和直接轉矩控制器為核心的彈用負載模擬加載系統方案設計。General numeric introduced its fourth - generation cnc using bubble memory ; however hitachi, another electronic giant, believes that bubble memory will provide the economical answer to direct numerical control ( dnc )
通用數字將泡沫存儲器引入到第四代cnc中;日立,另一個電子業巨頭,相信泡沫存儲將為直接數字控制提供經濟的答案。In dtc system, the concept of space vector is introduced to analyze and control the ac motor, the electromagnetic torque and flux are caculated and controlled in the stator reference frame, and the optimal pwm gating signas are generated to control the inverter according to the output of the bang - bang regulator. in this paper, the dtc system is designed based on dsp. a speed estimation method is derived detailedly and the sensorless speed close - loop control is conducted. in this system, there are some problems, such as flux drift and torque ripple. to resolve these problem, a modified flux caculation method and some measures such as speed lpf, torque slide filtering are adopted. the system performance is enhanced by these mersures
直接轉矩控制採用空間矢量的概念來分析異步電機的數學模型和控制其各物理量,直接在定子坐標系中計算和控制轉矩和磁通,藉助于離散的兩點式調節( bang - bang控制)產生pwm信號,直接對逆變器的開關狀態進行優化控制,以獲得轉矩的高動態性能。本文採用dsp設計了直接轉矩控制系統,詳細推導了速度估計方法,進行了無速度傳感器的速度閉環控制。The incumbent will directly report to credit control supervisor
此職位直接向信用控制主管匯報。分享友人