時間調制技術 的英文怎麼說

中文拼音 [shíjiāndiàozhìjìshù]
時間調制技術 英文
time modulation technique
  • 時 : shí］Ⅰ名1 （比較長的一段時間）time; times; days:當時at that time; in those days; 古時 ancient tim...
  • 間 : 間Ⅰ名詞1 （中間） between; among 2 （一定的空間或時間里） with a definite time or space 3 （一間...
  • 調 : Ⅰ動詞1 （配合得均勻合適） harmonize; suit well; fit in perfectly 2 （使配合得均勻合適） mix; adju...
  • 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...
  • 技 : 名詞（技能; 本領） skill; ability; trick; technique
  • 術 : 術名詞1. （技藝; 技術; 學術） art; skill; technique 2. （方法; 策略） method; tactics 3. （姓氏） a surname
  • 時間 : time; hour; 北京時間十九點整19 hours beijing time; 上課時間school hours; 時間與空間 time and spac...
  1. Based on consider hereinbefore, this dissertation discusses several aspects on the problem of the sustainable and optimum exploitation of groundwater resources as follows : ( 1 ) reviewed entirely the origin and evolvement of the concept " sustainable development ", stated and commented the study status in queue on " sustainable development " around national and international range, thorough discussed the science connotation about the concept " sustainable development " ; ( 2 ) looked back and commented across - the aboard some furthest basic concept and proposition related to groundwater resources, put forward self opinions on a few existent mistake points of view and chaos understandings ; ( 3 ) expatiated entirely on the content and meaning of the theory of changeable groundwater resources system, contrast with the traditional methods of groundwater resources calculation and evaluation, combined example to show the application of this theory ; ( 4 ) thorough analyzed the difficult and complexity to forecast the groundwater resources, fully stated the traditional methods of groundwater resources forecasting, pointed out the characteristic and applying condition of these forecasting method, introduced the main ideas and methods of wavelet analysis developed recently, and the matlab software be known as the fifths era computer language, and its accessory wavelet analysis toolbox, applied these methods and tools to analyze the groundwater dynamic curve, adopted the b - j method and morte - carlo method, combined with the theory of changeable groundwater resources system, discussed the new view on the forecast of groundwater resources ; ( 5 ) synthetically analyzed the characteristics and limitations of the present all kind of groundwater manage model, combined mathematical programming mathematical statistics random process and the theory of variation system of groundwater resources on the unite optimum attempter of surface water and groundwater, emphasized how to make the model more nicety, more simple, more practicality ; ( 6 ) analyzed the inside condition and outside condition to assure the sustainable and optimum exploi tation of groundwater resources, the inside conditions are the follows : correct resources idea, scientific methods of resources calculation and evaluation, credible forecast methods of resources, exercisable measures of resources management, the outside conditions are the follows : the development idea of high layer, the transform of manage system, the matched policy and rule of law, the adjusted of economy lever, the improve of cultural diathesis, the boosting up of water - saving consciousness and detail measures, the control of population rising, the prevention and cure of water pollute, the renew and rebuild of ecology ; ( 7 ) scan the sustainable and optimum exploitation of groundwater resources from the high level of metagalaxy, earth system science, and philosophy ; lint out the more directions on groundwater resources

    基於以上考慮，論文主要從以下幾方面對地下水資源可持續開發問題進行了比較深入的探討：全面回顧了「可持續發展」概念的由來與演變，對國內外「可持續發展」的研究現狀進行了述評，並對「可持續發展」概念的科學內涵進行了深入探討；對涉及地下水資源的一些最基本的概念和命題進行了全面的回顧和評述，對目前仍然存在的一些錯誤觀點和混亂認識提出了自己的見解；全面闡述了地下水資源變值系統理論的內容和意義，並與傳統的地下水資源計算評價方法進行了對比分析，結合實例具體說明了方法的應用；深入分析了地下水資源預測預報工作的極端重要性和復雜性，對傳統的地下水資源動態預測方法進行了全面的評述，指出了各類預測預報方法的特點及適用條件，對最近二十多年剛發展起來的小波分析技術的主要思想和方法及其應用范圍，以及號稱第五代計算機語言的matlab軟體和附帶的小波分析工具箱進行了介紹，並應用於地下水動態過程線的分析，採用時間序列中的b ? j法，蒙特卡羅方法，與地下水資源變值系統理論相結合，探討了地下水動態資料分析和地下水資源預測預報的新思路；綜合分析了現今各類地下水管理模型的特點及缺陷，將數學規劃、數理統計、隨機過程等與地下水變值系統理論相結合進行地表水地下水或多水源的聯合優化調度，使模型更準確、更實用；對保證地下水資源可持續開發的內部條件和外部條件進行了分析，內部河海人學博卜學位論文前言、摘要、目錄條件主要是正確的資源觀，科學的資源計算與評價方法，可靠的資源預測預報技術，可操作的資源管理措施，外部條件主要是高層發展思路、管理體制的變革、配套的政策法規、經濟杠桿的調節、人文素質的提高、節水意識的增強及具體節水措施、人口增長的控制、水體污染的防治、生態的恢復和重建等;從宇宙科學、地球系統科學及哲學的高度審視地下水資源的可持續開發;指出了地下水資源可持續開發的進一步研究方向。
  2. In the new environments of china ' s entry into wto, on one hand, as all enterprises are facing different competitive environments and the competition becomes more severe, it objectively requires all enterprises to shorten market response time and make themselves to manufacture according to po ; on the other hand, along with the innovation of new technologies of changan auto and the speedup of new products development, the increase of production scale, the company has the internal demand to establish advanced computer system to enhance the production management level and the site cannibalization & control capabilities, to convert itself to coordinated production and provide flexible technological guarantee for the mixed vehicle production line in the aspects of materiel coordination & product line management, when it builds new product line or rebuilds old product line

    在加入wto的新形勢下，一方面由於企業所面臨的競爭環境發生變化和程度進一步加劇，在客觀上要求企業縮短市場反映時間，盡量實現按定單組織生產；另一方面隨著長安汽車技術創新和開發新產品的加快，其生產規模的進一步擴大，在公司內部存在要求在建設新生產線或者改造舊生產線時，建立先進的計算機系統，提高生產線的生產管理水平，提高車間的現場調度和控制能力，向協同生產轉變，為多品種的汽車混線生產在物料投放與生產線管理上提供柔性的技術保證。
  3. In the digital inverter, we adopt the technology of digital dynamic waveform correction, which can compensate the delay between control signal and output waveform, and ensure the accuracy of control. at the same time, the technology of digital dc component adjustment was introduced, by which we can exactly compensate the control signal, and realize adjusting dc component of output on the premise of output performance

    在基於dsp的數字變換器平臺中，採用全數字波形校正技術，完全補償了控制信號延時、功率管開關延時以及死區時間對輸出spwm波形所產生的畸變，充分保障了變換器控制的準確性；採用數字直流分量調節技術，可以精確地對控制信號進行補償，在充分保證輸出性能的前提下，實現了輸出直流分量的調節。
  4. According to the state of discharge gap, combining database technology, we adopt neuro - fuzzy control technology to realize real - time control of edm process and auto - adjustment on the basis of process state, which ensure the process is in the state of optimization

    依據放電間隙狀況，通過採用神經模糊控制智能技術，並結合數據庫技術，對電火花成型加工過程進行實時控制，根據加工狀態自動進行調節，保證了加工過程處于優化狀態。
  5. This dissertation first introduces the thought of design, and divides ecss into several parts in light of its functions, and every part is introduced briefly. then communications between expert controller and scada, and the design of expert control, such as knowledge library, reasoning, real - time control and so on, is dissertated in detail. at last this dissertation introduces real - time expert control with expert controller developed by ecss

    本文先從整體上給出了ecss的設計思路，並對ecss進行了功能劃分，然後重點論述了專家控制的實現，包括知識的表示，推理機制以及實時調度策略等；詳細闡述了專家控制器與工控組態軟體間的通信技術及其實現。
  6. The control strategy included the tempering drying technique, auto - control of temperature for heating air and auto - control of tempering period

    控制策略包括調質乾燥技術，熱風溫度自動控制與均化時間自動控制。
  7. Reference materials are those, during the time he making his invention, the inventor referred to for the purpose of resolving the problems existing in the prior arts or for the purpose of resolving new problems met during his inventive activities ; the reference materials further include the relevant materials obtained during the search he conducted before the date of filing to prove that his invention had novelty. if an application for a patent for invention has already been filed in a foreign country, the sipo may ask the applicant to furnish, within a specified time limit, documents concerning any search made for the purpose of examining that application, or concerning the results of any examination made, in that country. the results of the examination are the observations, decisions on the examination, decisions on grant of patent, or decisions on rejection, issued by foreign patent offices on the prior applications after having examined same

    我公司願意為企業提供全方位專利保護的咨詢和服務，幫助客戶建立內部知識產權管理制度，幫助培訓員工的知識產權基礎知識正確地利用知識和信息為客戶建立專利信息庫，協助調研課題，制定研究方向，避開他人的知識產權保護范圍，以避免開發經費及開發時間的浪費協助對一些領域的發展趨勢進行預測，制定其技術發展政策重點和方向，形成市場競爭優勢根據客戶的不同需求建議申請或注冊的方式時機及策略對客戶關注的項目做必要的市場跟蹤，以促進客戶了解最新的行業動態，從而啟發新的創新並不斷調整市場策略並在客戶制訂合同許可轉讓技術等方面提供專業化的服務。
  8. This thesis analyzed the error performance of mfsk and mpsk modulator in hf with optimal receiver, studied the shortcoming and strongpoint of several typical short - wave data transmission systems and their performance over fading and intersymbol interference channels. the theory and key technical of adaptive modem is discussed. in the last, an efficient modulation scheme - block coded modulation is introduced into hf radio systems to improve the efficiency of hf data transmission, this paper also proposes a hf data transmission system scheme composed of a block coded modulator and a decision feedback type adaptive equalizer

    本文在對短波數傳兩種常見調制方式fsk及psk最佳解調性能分析的基礎上，討論了幾種採用典型調制技術的短波數傳系統（如時頻調制、多進制頻移鍵控慢跳頻、 chess系統）原理、優缺點以及抗衰落和抗符號間干擾的性能；分析了自適應串列數傳系統抗短波通道衰落和多徑干擾的原理、關鍵技術；在本文的最後引入一種有望解決短波數傳系統低效率狀況的調制方式bcm -分組編碼調制，給出了一個採用bcm技術與自適應均衡技術相結合的短波數傳系統方案，並通過計算機模擬進行了初部驗證。
  9. Based on the output - voltage error function, a novel time discrete modulation technique is proposed for matrix converters ( mcs ) and time - discrete difference equations of a mc circuit are derived

    摘要針對矩陣變換器調制方式的特點，提出了基於輸出電壓誤差函數分析的矩陣變換器離散調制技術，推導了基於時間離散和差分原理的電路方程。
  10. By theory and practice simulation, the several types of constant envelope modulation techniques are analyzed and compared, including theirs modulation principle, phase path, the modulated wave envelope, power spectrums, error bit rate and the influence of its power spectrums of the band - limited and non - linear, etc. especially we have researched the ijf - oqpsk modulation technique, and the performance of its inter - symbol interference and time jitter free, and its strongly resisting of spectral spreading

    結合理論和實驗模擬結果，分析討論了衛星通信中的各種恆包絡調制技術，對它們的調制原理，相位路徑，已調波包絡，功率譜密度，誤碼性能，以及帶限非線性通道對其功率譜的影響等方面都作了研究和比較。特別研究了ijf ? oqpsk在消除碼間干擾和定時抖動方面的性能及其優良的旁瓣特性和抑制頻譜擴展特性。
  11. On the design of the system, the thickness measure system of mems chip is built based on lbu and pump - probe technology. on the analysis of data, the reflectivity curve is analyzed using the law of reflectivity change induced by ultrasound, and the thickness is calculated using the system designed by the article, to aluminum film the size of about 20nm can be measured, when the film be measured is single layer, the relative error of the system is less than 2 %, when the film be measured is double layer, the relative error of the system is less than 10 %

    在基礎理論方面研究了激光（特別是超短脈沖激光）超聲的激勵機理，探討了激光調制技術以提高系統信噪比，闡述了泵束探針束技術及相關實驗設置；在系統設計上，以激光超聲為基本原理，以泵束探針束技術為系統設計方案完成了mems基片厚度測量系統的設計；在數據分析方法上，利用聲致光反射率變化的一般規律對測得的光反射率曲線進行分析，確定超聲回波在薄膜兩界面間來回傳播的時間，以計算薄膜的厚度。
  12. Using dsp of ti inc. - - - - - - - tms320f240 this thesis develops a general ac variable - speed system, and then carries out the research on various new control strategies for induction motor based on it. this paper explains sine pulse width modulation ( spwm ), space - vector pulse width modulation ( svpwm ), and new pulse width modulation method - hybrid space vector pulse width modulation ( hsvpwm ) aiming at a inherent problem of dead time in the common pulse width modulation

    本文闡述了正弦脈寬調制（ spwm ）控制技術；電壓空間矢量（ svpwm ）控制技術；以及針對常用脈寬調制方法中存在的一個固有問題? ?逆變器開關器件死區時間的影響，提出了一種新的脈寬調制方法：混合空間矢量脈寬調制控制技術。
  13. It ' s a driving force and also a challenge to control in both theory and technology due to the more and more severe specifications imposing on it. a variety control theory have been developed, however, with limited performance in practical applications, especially in term of the relatively lower response speed when used in those machines which run fast. therefore, it is necessary to develop a new self - tuning algorithm for fast running plant of uncertainty so as to set theoretical base for controller design

    在科技飛速發展的今天，各種新設備、新工藝的出現促進了控制理論的發展，同時也對控制技術提出了越來越高的要求，雖然已有許多旨在提高控制性能的不同的控制理論，但由於其各自的局限性，在應用中仍然存在許多問題，特別是對于運行速度較快的機械設備等，其響應時間往往不能達到要求，因此，有必要開發一種新型、快速、能夠適應快速運行或變化的對象或過程的自調節演算法，以為控制器的開發作好理論支持。
  14. Direct torque control using space vector modulation ( svm - dtc ) scheme is discussed and the detailed designed, including space vector choosing and modulating, to overcome the control difficulties coming with the characteristic of low inductance. comparing with the basic dtc, the simulation results confirm the feasibility and good performance of this strategy. in order to reduce the torque error in dynamic state resulted from the nonlinear relationship between the torque and torque angle, a proportional - plus - integral ( pi ) torque controller with variable proportion is presented to ensure exact and quick control of torque in dynamic state

    系統的闡述了永磁同步電機直接轉矩控制理論，分析了改進后的svm - dtc控制策略，並具體設計了控制技術的實現方案，包括參考矢量的生成和空間電壓矢量調制的方法；為減小電磁轉矩與轉矩角非線性關系這一因數給電機電磁轉矩動態調節造成的誤差，本文實現了變比例系數轉矩pi調節器的方案，確保了系統穩定性的同時，實現了電磁轉矩在動態過程中快速而準確調節。
  15. Although adsl comes with new digital processing, coding, modulation and error correction technologies, it is also faced with various challenges out of subscriber lines, such as background noise, impulse noise, insertion loss, cross talk, wire size variations, bridge tap, line joints and line insulation, etc. all those factors tend to produce adverse impacts on the performance of high - speed transmission services. firstly, the insertion loss of copper lines increases in proportion to the length of lines

    雖然adsl採用先進的數字信號處理技術、編碼調制技術和糾錯技術，但是在推廣adsl業務時，用戶線路的許多特性，包括線路上的背景噪聲、脈沖噪聲、線路的插入損耗、線路間的串擾、線徑的變化、線路的橋接抽頭、線路接頭和線路絕緣等因素將影響高速率傳輸業務的性能。
  16. Furthermore, this paper exploringly studies an 802. 1 la high - speed wlan with the 54mbps data rate, and presents a sort of time synchronization and frequency offset estimation method based on the frequency domain auto - correlation of the unique preamble training sequence of 802. 11 plcp frame ; the method have the high time precision, the wide frequency estimat ion range and short convergence process ; and moreover, it can applied to other frame communication system

    另外本文還對最高傳輸速率為54mbps的802 . 11a高速無線局域網系統進行了探索性研究，討論了ofdm調制技術在無線局域網中的應用；結合802 . 11a物理層數據幀結構特點，提出了一種基於前導訓練符號序列的頻域自相關時間和頻率同步方法，此方法具有定時精度高、頻偏估計范圍寬和同步建立迅速等特點，也適合於其它幀通信應用場合。
  17. Ofdm ( orthogonal frequency division multiplexing ) is a multi - carrier data modulation technology. though the conception of ofdm was brought forward many years ago, it is only in recent years that people recognize it as an excellent way of high speed, bidirectional, wireless data communication

    正交頻分復用（ ofdm ）技術是一種多載波數據調制技術，雖然ofdm的概念已經存在了很長時間，但是直到最近隨著多媒體業務的發展，它才被人們認識到是一種高速雙向無線數據通信的良好方法。
  18. The list betterments aimed at the properties of system : through the testing of dc voltage, pulse width and inverting voltage and frequency can be regulated online to fit for different steady load ; reducing speed ripples by compensating with nonzero voltage working proportional time ; adopting the technology of harmonics suppression. as a result, the high precision and wide speed control is realized and the step out is overcome

    針對系統的性能指標，做了如下改進：對直流側電壓的檢測，在線調整逆變器導通脈寬、輸出電壓和頻率，可以適應不同大小的恆負載；並用非零電壓矢量作用時間進行補償的方法，減小電機的低速脈動；加入了諧波抑制技術等。
  19. 2 a mathematical model of the reflected signal based on the frequency modulation continuous wave ( fmcw ) radar, solving the frequency - azimuth estimation of coherent signals by spatial smoothing technology, comparing the resolution of the object based on two - dim music method and that based on two - dim fft

    2討論了在接收dbf條件下，回波信號的二維譜估計技術。建立了基於調頻連續波體制雷達下回波信號的數學模型，並將空間平滑技術推廣到時-空二維譜估計，解決了相干信號源的頻率-方位估計問題。
  20. A successful synchronized control scheme must control both the spacial and the temporal aspects of the motion. in this sense, synchronization refers to controlling the positions and velocities of the motors relative to each other so that they remain well - coordinated. in this paper, a system with two motors to drive one axe is proposed

    一個優秀的同步控制方法要兼顧系統的時間和空間兩個方面，因此同步控制方法的研究要深入到速度和位置的雙重同步，它的成功研究可以應用到軍事、航空以及一般工業技術領域中，為需要統一動作功能的多臺電機提供協調控制技術。
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