慢變系統 的英文怎麼說

中文拼音 [mànbiànxìtǒng]
慢變系統 英文
slowly varying system
  • 慢 : Ⅰ形容詞1. （速度低; 走路、做事等費的時間長） slow 2. （態度冷淡, 沒有禮貌） supercilious; rude Ⅱ動詞（從緩） postpone; defer
  • 系 : 系動詞（打結; 扣） tie; fasten; do up; button up
  • 統 : Ⅰ名詞1 （事物間連續的關系） interconnected system 2 （衣服等的筒狀部分） any tube shaped part of ...
  • 系統 : 1. （按一定關系組成的同類事物） system 2. （有條理的;有系統的） systematic
  1. There are many nonlinear systems with their characters slow time varying in control domain. those with intrinsical nonlinear portions are even much more hard to control successfully

    在控制領域中，存在著大量的非線性慢時變系統，其中的帶有本質非線性環節的系統尤其難以得到好的控制效果。
  2. In the non - coaxial bwo of l - band, the radius of the slow - wave structure is very large, and the volume and weight of the guiding - magnetic system are also very large. thus, the non - coaxial bwo of l - band is bulky and lumbersome and is inconvenient for real application

    若採用非同軸相對論返波振蕩器實現l波段的微波輸出，則要求慢波結構的平均半徑很大，導引磁場系統的體積和重量會變得較大，這給器件的小型化帶來了很大的困難。
  3. Application of mixed neural network in slow time - varying system control

    混合網路在慢時變系統中的應用
  4. ( 6 ) extension control is studied in earnest. through a simulation example extension control is compared with some kinds of neural networks control. the simulation result on slow time - varying nonlinear system shows that extension control is superior to neural networks control

    （ 6 ）認真研究了可拓控制，通過模擬算例對可拓控制與幾種神經網路控制進行了比較分析，得出了對慢時變非線性系統可拓控制比神經網路控制效果要好的結論。
  5. The boiler pulverizing system adopt mainly steel ball milling coal machine and mill storage pulverizing system, because the system has characteristics, such as, strong coupling, great time lag and slow time change. the quantity of storage coal in the ball milling coal machine ca n ' t measure exactly. manpower operation or use conventional regulate intrument ca n ' t get often perfect control effect

    鍋爐制粉系統大多採用鋼球磨煤機、中儲式制粉系統，由於該系統具有強耦合、大時滯、慢時變等特點，而且球磨機磨內存煤量難以準確測量，人工操作或用傳統的調節儀表往往難以達到理想的控制效果，普遍存在耗能高、自動控制困難等問題。
  6. Abstract : the theory of variable structure control of sing ular nonlinear control systems was considered based on the singular nonlinear systems itself by employing the method of geography, and gives the sufficient condition of existence of variable structure control and approximation theory of real sliding mode. it is shown that sliding condition only guarantee the slow - varying state of real sliding mode approach that of ideal sliding mode but not guarantee the fast - varying state of real sliding mode approach that of ideal sliding mode. the method applied for studying normal nonlinear system can not be used directely to singular nonlinear system

    文摘:利用幾何方法，從廣義非線性系統本身出發，研究了廣義非線性控制系統的變結構控制理論，給出了系統存在變結構控制的充分條件及實際滑動模的近似定理.從所得結論可知，滑動條件僅能保證實際滑動模的慢變狀態趨近於理想滑動模的慢變狀態，而不能保證實際滑動模的快變狀態趨近於理想滑動模的快變狀態，研究正常非線性系統的方法已不能簡單地被利用到廣義非線性系統
  7. The theoretical analysis shows that any human activities, responsible for the changes of rock, air, water, soil and biology inside or outside the caves, will influence inevitably cave animals in terms of such levels as molecule, cell organelle, cell, tissue, organ, system, individual, population, society and ecosystem. these effects can be observed on cave animal ' s shape - building, activity, tissue structure, metabolism, space - time distribution, biothythm, structure of population and society, food chain, bio - relation, diversity of population and society, and function of the above - mentioned levels

    理論分析表明，凡是能夠引起地表和洞穴巖石、空氣、水、土壤、生物等變化的一切人類活動都不可避免地使洞穴動物在分子、細胞器、細胞、組織、器官、系統、個體、種群、群落和生態系統各級層次上產生效應，這些效應具體表現在影響洞穴動物形態建成、行為、組織結構、新陳代謝、時空分佈、生物節律、種群和群落結構、食物鏈結構、生物關系、種群和群落多樣性以及各層次所表現的功能的多少、快慢、強弱等方面。
  8. Based on the two postulates that the speed of light is constant and the laws of physics apply equally to all inertial reference frames, the theory predicts strange effects such as time dilation, length contraction and simultaneity of events varies according to viewers

    基於兩個論點，即光速不變及物理定律可應用於任何慣性系統，狹義相對論預測了時間變慢長度收縮及同時事件是因觀察者而異等奇怪現象。
  9. The comparative advantages to develop inner mongolia beef cattle industry are the price, non - pollutions and vast grasslands etc. the disadvantages are as follows : be short of specific beef - cattle kind ; individual productivity ability ; meat nature promoting slowly ; raises method and management standard being fairly backward ; butcher, process, circulate, and the link aspect receives the technology restriction unfavorably factors such as serious etc. the suggestions for development of beef industry in inner mongolia are as follows : strengthening the bioengineering technology and setting up the inner mongolia beef cattle breeds system ; quickening the breed cultivating ; optimizing the breed structure ; effectively increasing the safe forage supplies ; strengthening epidemic disease prevention ; curing quarantining work ; developing the nutrition hygiene " green food " ; changing traditional raising method ; raising the management standard, and carrying on scope production

    發展內蒙古肉牛業具有價格、無污染、草原廣闊等優勢，但存在著專有肉用牛品種缺乏、個體生產性能和肉質提升緩慢、飼養方式和管理水平比較落後、屠宰、加工和流通環節方面受技術制約嚴重等不利因素，因此，要利用生物工程技術，建立內蒙古肉牛繁育體系，加快品種培育，優化品種結構；有效地增加安全飼料供應；強化疫病防治和檢疫工作，發展營養衛生「綠色食品」 ；轉變傳統飼養方式，提高飼養管理水平，進行規模化生產；重視開拓農村市場，促進內蒙古肉牛業發展。
  10. The artificial neural net ( ann ) way is universal regard as one of the most effective ways of stlf. in this paper, some research is developed for stlf using ann ways in several parts : the first part is about the arithmetic of ann based on bp model, namely the advanced of traditional bp arithmetic, one alterable step and scale bp arithmetic based on comparability of model and probability of accepting bp arithmetic is used to enhances a lot the convergence rate of learning process of bp network, but also avoid the stagnation problem to some extent. it indicates that the ann ' s efficiency and precision by the way can be ameliorated by the simulation of real data

    神經網路方法在短期預測中已經被公認為較有效的方法，本文針對神經網路用於電力系統短期負荷預測的幾個方面展開研究工作：第一部分研究一般用於負荷預測的神經網路bp模型的演算法，即對傳統的bp演算法的改進，將一種基於模式逼近度和接受概率的變步長快速bp演算法應用到短期負荷預測，模擬結果表明該方法有效的改善了bp演算法收斂速度慢以及容易陷入局部最小點的缺點，從而提高了神經網路用於負荷預測的效率和精度。
  11. The conventional variable structure control technique for uncertain system requires that the uncertainty bound is known as a premise to assure robustness. the requirement creates an over - conservative controller and enlarges chattering. the proposed controller regards the influence of unknown disturbances and parameter uncertainties as an equivalent disturbance and generates an on - line estimation used in smc to cancel the slowly varying uncertainties by the mechanism of time delay. the reaching law approach is used to get the conditions and band of quasi - sliding mode. the new methodology offers a robust feedback control with much lower gains and reduces chattering without a prior knowledge of the uncertainty bounds or matched conditions

    常規變結構控制用於不確定系統，須利用不確定性界確保系統的魯棒性，控制器過于保守且抖振變大.本文把未知干擾和參數不確定性的影響等效為名義系統的外界干擾，利用時延技術對干擾進行在線估計，並將估計值引入到變結構控制中，從而抵消掉系統中的慢變不確定性，利用離散趨近律法，推出了準滑動模態的存在條件及其帶寬.該方法克服了以往控制方法中須已知不確定性界的限制，且不必滿足匹配條件，用較低的控制增益保證了系統的魯棒性，降低了準滑動模態帶即削弱了抖振
  12. Abstract : the conventional variable structure control technique for uncertain system requires that the uncertainty bound is known as a premise to assure robustness. the requirement creates an over - conservative controller and enlarges chattering. the proposed controller regards the influence of unknown disturbances and parameter uncertainties as an equivalent disturbance and generates an on - line estimation used in smc to cancel the slowly varying uncertainties by the mechanism of time delay. the reaching law approach is used to get the conditions and band of quasi - sliding mode. the new methodology offers a robust feedback control with much lower gains and reduces chattering without a prior knowledge of the uncertainty bounds or matched conditions

    文摘:常規變結構控制用於不確定系統，須利用不確定性界確保系統的魯棒性，控制器過于保守且抖振變大.本文把未知干擾和參數不確定性的影響等效為名義系統的外界干擾，利用時延技術對干擾進行在線估計，並將估計值引入到變結構控制中，從而抵消掉系統中的慢變不確定性，利用離散趨近律法，推出了準滑動模態的存在條件及其帶寬.該方法克服了以往控制方法中須已知不確定性界的限制，且不必滿足匹配條件，用較低的控制增益保證了系統的魯棒性，降低了準滑動模態帶即削弱了抖振
  13. Flux position & error in flux magnitude and error in torque are used as fuzzy state variables. fuzzy logic is used for choosing the switching state. a fuzzy logic controller can choose the switching states according to a set of fuzzy rules based on both specialists " experience and knowledge, which improves the response performance of the system effectively during start - up and change in load

    作為本文的一個創新點，針對普通的直接轉矩控制在給定轉矩躍變時反應較慢的缺點，提出了一種模糊控制器，把磁鏈位置、磁鏈誤差和轉矩誤差作為模糊輸入變量，應用模糊邏輯來確定逆變器的開關狀態，該模糊控制器根據一套基於專家經驗和知識的模糊規則來選擇開關狀態，從而有效地提高了系統在啟動和負載突變時的響應速度。
  14. Author, starts from the one - way wave equation of wavefield extrapolation, research the relationship and transform condition of wavefield extrapolation operators, and propose the steady variational reference slowness rytov approximation general screen wavefield extrapolation operator ( vrselrf ) which can adapt severe lateral velocity variations, in frequency - wavenumber domain, and the improved wavefield extrapolation scheme, also give the method to improve the computation efficiency. the achievement establishes the theoretic basis of the whole research

    首先，從波場延拓的單程波方程出發，系統地研究了頻率波數域的波場延拓運算元之間的相互關系和轉換條件並在此基礎上提出了能適應劇烈橫向變速的頻率波數域穩定的變參考慢度rytov近似廣義屏波場延拓運算元（ vrselrf ）和部分波場延拓改進方案及提高運算效率的措施，為整個研究打下理論基礎。
  15. The control of the ball mill pulverizing system in the 200mw unit in panxian power plant is researched in this paper. fuzzy control police most has application in the situation that it is difficult to establish object model. it has better stability and robustness

    本文以盤縣發電廠200mw機組的球磨機制粉系統的控制為研究對象，針對球磨機具有的純滯后、大慣性和非線性、數學模型難以建立且隨時間緩慢變化等特點，常規控制方法難以取得良好的控制效果。
  16. A sheme of two code - rates tcm - qam with high coding gain is presented, its signals space is mapping for 90 rotationally invariant codes ( ric )

    摘要提出了一種適用於慢變通道的雙碼率tcm - qam系統方案，該方案有較高的編碼增益，同時滿足90旋轉不變要求。
  17. The rubbing fault of a slow - varying rotor system is diagnosed by means of a wavelet time - frequency contour map and good results have been achieved

    利用小波時頻等高圖來診斷質量慢變轉子系統碰摩故障，取得了比較好的效果。
  18. The bad : new look still seems antiquated by today ' s standards ; frequent battles remain an issue, though you can skip some ; fights tend to be rather slow - paced and methodical and can get to be a drag

    缺點：新畫面以今天的標準看起來還是有點陳舊；雖然你可以跳過一些，但頻繁的戰斗依然是個毛病；戰斗往往（進行的）非常緩慢而且亦步亦趨（過分系統化） ，變得拖沓冗長。
  19. The research on the rf characteristics of the conductor - centered helical groove sws. ( a ) in the " cold " system, we found that the changing of depth of the groove has no distinct effects on the phase velocity at the lower frequency region ; but with the increasing of the frequency, the phase velocity and bandwidth are reduced slightly, the structure is more dispersive and the coupling impedance is enhanced

    對具有中心導體軸的矩形螺旋槽慢波系統的高頻特性進行了理論研究： （ 1 ）在冷系統中的研究結果表明：頻率較低時，槽深的改變對相速的影響不是很大，隨著頻率的增大相速略有減小，同時帶寬也有所減小，色散變得稍強，耦合阻抗增大。
  20. The mode competition is much improved. it may operated with a large electron beam radius, that means decreasing the space charge effects compared with a smaller radius beam with the same current, hence the rbwo may operated with a low axial guide magnetic field. besides, the rbwo with a sinusoidal corrugated coaxial structure is very easy to manufacture

    波紋內導體rbwo具有一些突出優點:同軸結構中內導體的存在使系統的截止頻率顯著升高，使得系統尺寸可比普通波紋波導慢波系統大;具有很大的抑制模式競爭的能力和很高的功率容量;可以採用大半徑電子注，在工作電流不變的情況下空間電荷效應大幅度降低，因而可以工作在低磁場狀態;此種慢波結構內導體上的波紋易於加工。
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