指數參考線 的英文怎麼說
中文拼音 [zhǐshǔshēnkǎoxiàn]
指數參考線
英文
index reference line-
The antenna gain, directivity and reflection coefficient are calculated via finite element method in hfss. spline interpolation and polynomial curve fitting are applied to construct diagrams illustrating the capsulation characteristics. some general conclusions of interest are obtained
探討了各個封裝參數對輸入端反射系數、方向性系數、效率和增益等性能指標的影響，得到一些規律性結論，為射頻振子天線的封裝應用提供了參考性的建議，並指出了進一步研究的方向。On the condition of “ many - head ” and “ small drive ratio ” ， the plane double enveloping hourglass worm can not settle the problem of undercutting and sharpening simultaneously. it has devoted to a new type hourglass worm _ sphere double enveloping hourglass worm. the coordinate system is established according to the frock. the meshing equation and the tooth equation of worm and gear have been developed and the distribution of contact line on gear tooth is analyzed. to evaluate the meshing quality ， four meshing quality indexes and five original parameters are put forward. through mass programming computing ， the relations between meshing quality and original parameters are derived and depicted by graphs
考慮到平面二次包絡環面蝸桿傳動在多頭小傳動比條件下根切與齒頂變尖的矛盾很難同時解決且嚙合性能較差，介紹了一種新型環面蝸桿傳動? ?球面二次包絡環面蝸桿傳動.在研究過程中，根據工裝建立了坐標系，根據一二包過程的運動關系推得了嚙合方程和蝸桿與蝸輪的齒面方程，分析了蝸輪齒面上的接觸線分佈.為了評價嚙合性能，提出了4項性能指標和5項原始參數，通過大量編程計算得到了嚙合性能指標與原始參數之間的關系，並以圖表直觀的表示The stability of electric power system has been being focused for a long time toprevent a power system from losing synchronism after sudden fault ， researchers have done much work and got many accomplishments this paper applied the direct feedback linearization ( dfl ) technique on the power system ， a strong nonlinear system simulation results by matlab proved this method efficiency main works and results are as follows ： this paper compared some existing methods in excitation control ， fast valve control and coordinated control respectively, analyzed the developments and actuality of nonlinear control research in brief, illustrated why ransient stability could be greatly improved by using the fast valve control in chapter 3 ， indicated the importance of coordinated control farther this paper introduced the inverse system theory, based on which ， discussed the dfl theory, pointed out which had consistency with the inverse theory, expanded the dfl theory combined the idiographic model equations ， made which adapt to the model of a single machine - infinite bus power system this paper referenced abundance articles and educed a set of equations ， which could describe the dynamical process of excitation and fast valve control for synchronous generators in the equations ， there were several very important parameters of power system - - rotor angle ( ) ， rotor speed ( ) ， generator q axis voltage ( eq ) ， transient voltage ( e ' q ) ， active power ( pe ) ， mechanical input power ( pm ) ， valve opening ( ) ， generator terminal voltage ( vt ) ， based on the model ， nonlinear coordinated controller and terminal voltage optimal controller have been designed by using the expanded dfl theory and lq optimal control theory the simulation results showed that the controller could keep power system transiently stable under the effects of a symmetrical 3 - phase short circuit fault ， which achieved better postfault regulation compared with another two routine methods ， one is the proportion excitation controller and proportion fast valve controller, the other is the proportion excitation controller and the optimal fast valve controller, which could exert good performance when met 1ittle disturbance either
在介紹逆系統理論的基礎上，詳細介紹了dfl理論，通過比較闡明了dfl理論其本質是逆系統方法的一類，並結合具體課題推導出的模型方程將dfl理論進行了擴展，使之適應于電力系統這個強非線性對象。通過參考大量的書籍文獻推導出一套實用的可將大型汽輪發電機勵磁與汽門綜合起來進行控制的模型方程，此模型方程涵蓋了電力系統中特別引人注目的幾個量- -轉子角、轉子轉速、發電機q軸電勢eq 、暫態電勢e ' q 、有功功率pe 、機械功率pm 、汽門開度、機端電壓vt ，在此基礎上建立了實用的電力系統簡化的數學模型，並將擴展的dfl理論應用於此模型系統，結合線性二次型最優控制理論設計出大型汽輪發電機的非線性綜合控制器及機端電壓最優控制器，通過模擬實驗與採用常規的按電壓偏差進行調節的比例式勵磁控制器+汽門比例控制及採用常規的按電壓偏差進行調節的比例式勵磁調節器和基於二次型性能指標設計的最優快控汽門（考慮發電機的飽和因素）進行了對比，證實了採用此種控制器可以有效地提高電力系統的暫態穩定性，並且在電力系統遭受小干擾時同樣具有良好的調節性能。This thesis in combination with the actual engineering demand, analyzes and designs a horizontally polarized triangular - grid planar phased array antenna, which composed of open - ended rectangular waveguide, the main steps of analyzing and designing are as follows : 1. at first, taking no account of mutual coupling among the array elements, classical electromagnetic theory is used to establish analyzing model for finite array, and initial value parameters of the array structure which basic satisfy the design index are got, these parameters provide reference for subsequent analyzing and design
本論文結合實際工程需要，分析和設計了一個採用水平極化方式的三角形柵格矩形波導相控陣天線，其主要步驟如下: 1 .首先，在不考慮陣列單元間互耦影響的情況下，採用經典電磁理論建立有限陣列分析模型，通過分析得到了基本滿足設計指標的陣列結構參數，為后續的分析、設計提供參考。Secondly, in view of the limitation and shortage of traditional simulation of finite element approaches for bolt, a new composite grouted bolt element including nonlinear contacting relation will be built based on the above study of the mechanics mechanism of fully grouted bolt. then, an elastic - plastic finite element program will be developed for the analyses of tunnel stability, in which the composite grouted bolt element and nonlinear finite element analysis method will be used ; the patterns and the affect of main design parameters on the support effect of bolt will be analysed using the program, and conclusions of guidance importance for tunnel support design will be drawn. finally, simulation compution for the excavation and support of a highway tunnel will be made out using the above production, and the method of application of the program will be discussed ; analysis of the deformation, stress and distribution of plastic range will be done, and rational support plan will be worked out, which is of guidance importance for tunnel support design and the thery and technique of fully grouted bolt used in tunneling will be perfected further
首先，本文在綜合分析隧道穩定性影響因素及失穩破壞模式的基礎上，對全長粘結式砂漿錨桿作用力學機理進行了深入研究，為全長粘結式砂漿錨桿的有限元模擬分析奠定了基礎;其次，針對傳統錨桿有限元模擬方法的局限性與不足，在上述全長粘結式砂漿錨桿作用力學機理研究基礎上，建立出能反映界面非線性粘結的新型復合砂漿錨桿有限單元模型;然後，運用上述復合砂漿錨桿單元模型，引進非線性有限元分析手段，開發了隧道支護穩定性分析的有限元程序，並就全長粘結式砂漿錨桿的型式與設計參數對支護效果的影響進行了深入探討，得到了對隧道支護設計具有指導意義的結論;最後，運用本文研究成果對某公路隧道工程實例進行了開挖與支護的模擬計算，探討了其應用方法，並就隧道變形與應力及塑性區分佈規律進行了分析，從而提出了合理的支護方案，為隧道支護設計提供了參考依據，完善了隧道全長粘結式砂漿錨桿支護的理論與方法。In the paper, the transmission power of section constituted by the assigned branch is seen as objective function, assigning the adjustable generators both in sending system and receiving system, assigning the faults set, including the constraint conditions such as the differences between the angles of rotor and the inertia center angel of the whole system, the thermal stability of branch and node voltage, obtaining the results by using interior - point solution and line - predominant jordan
本文提出的考慮暫態穩定約束的可用輸電能力演算法是以指定線路組成的斷面的傳輸功率為目標函數，指定送端系統和受端系統中參考調節的發電機，指定故障集情況下，以發電機轉子相對全系統慣性中心的角度差、線路熱穩定、節點電壓等構成約束條件，採用內點法和行主元約當逐行消去法求解問題的最優解。Concrete filled steel tube ( cfst ) arch bridge is a new type of bridge which is widely applied in china recently, and it is a relatively ideal structural form for long span arch bridge. with the background of the practice of liantuo bridge, in the view of point of feasible in technology and reasonable in economy, the key techniques and difficulties in the construction of cfst arch bridge are analyzed and discussed in the thesis. the disadvantages in the current design and construction and the improvement method are also indicated
本文以蓮沱特大橋工程實踐為背景，以主拱施工研究為主線，對鋼管混凝土拱橋重難點施工工藝，從技術上可行、經濟上合理的角度出發，詳細的進行了分析闡述，並指出了設計施工中存在的不足和今後需改進的方向；通過對鋼管混凝土拱橋施工過程中內力的計算，確定了拱肋施工最不利荷載工況下加載重量、壓重順序和張拉臨時預應力束等一系列施工措施，並將計算結果與現場監測觀測數據進行了比較分析，為今後進一步研究這類結構提供了參考。This paper has built more precision mathematical model for the valve controlled asymmetrical cylinder system based on the simulink simulation flat, then according to actual need and combining self - adaptive control theory, we choose a mathematic model which has good performance to be the reference model of our adaptive control and adopt velocity system of asymmetric cylinder controlled by symmetric valve as controlled device to design the adaptive controller
本文建立了基於simulink模擬平臺上的閥控非對稱缸系統較精確的非線性模型，然後根據對系統提出的性能指標要求，結合自適應理論選取性能良好的數學模型作為自適應控制的參考模型。以閥控非對稱缸速度系統作為被控對象，設計自適應控制系統。Nc machining requires " interpolation " algorithms that accurately and efficiently generate sequences of reference position, distributed according to a prescribed feedrate function, along the tool paths. this paper present a systematic derivation of the proper taylor series coefficients for variable feedrate interpolators. when the path is ph curves, detailed formulations for instances are presented where the feedrate v is specified as a constant, the function of the time t, the arc length s and the local curvature k
對于nc加工要求插值演算法沿著刀具路徑準確、有效的生成參考點序列（根據預先指定的速率函數進行分佈）的實際工程需要，本文系統地推導了變速率插值運算元的泰勒系數，給出了當路徑為ph曲線，速率v為常數，及時間t 、弧長s 、曲率k的函數時具體的插值運算元。It was commonly agreed that apart from the issue of preservation of views to ridgelines and achievement of a well - designed waterfront, the guidelines for most of the urban design issues could be in advisory form and be applied administratively when appropriate
根據?集所得的絕大多數意見，除了保存在遠眺下的山脊線景觀與優美海旁設計的兩項議題外，就大部分城市設計議題所擬備的指引，在推行時可訂為參考性質，但適當時也可透過行政方式落實。At first, the author analyzed the features of price movement of scch stock and the movement of shanghai a class index, then treating the shanghai a class index as the macro market, deduced the relation between the shanghai a class index and scch stock ’ s price, and showed that scch stock price was affected weakly by the index. later, the paper studied the relation between stock price and the interest of the one year fixed deposition, thirdly, the author studied the relation between the electronic industry index and scch stock price through the liner regression, and thought that the scch stock price was highly correlated with the electronic industry index. finally, the author studied the effect on the scch stock ’ s price caused by the accountant data, dividend policy, investment and corporate governance, then drew the inherent relations between the above factors and scch stock price
首先，分析了四川長虹股價與上證指數波動特點，並以上證指數為參考，分析了市場對四川長虹股價的影響；然後，分析了一年期定期存款利率對四川長虹股價波動的影響，認為四川長虹股價波動受市場宏觀因素影響較小；其次，利用線性回歸方法分析了電子指數與四川長虹股價間的關系，認為電子指數與四川長虹股價之間高度正相關；最後，分別對財務數據、股利政策、長虹投資、公司治理等四川長虹內部因素對四川長虹股價波動的影響進行了分析，指出了這些因素與四川長虹股價的內在聯系。Furthermore, the dual - exponential curve transformation needs no reference time intervals for calibration, and hence it immunes to the uncertainties such as jitter of the reference inputs
更重要的是，雙指數曲線轉換的方法不需要參考的時間單位來作為校正輸入，因此可以避免參考時間的不確定性如時基抖動所造成的誤差。After introduction to the principle, the realizing methods and applications of chaos anti - control, the state of art of chaos anti - control methods both at home and abroad are aimed and summarized : including chaos anti - control based on lyapunov exponents allocation, chaos anti - control based on added linear or nonlinear state feedback, chaos anti - control based on the alteration of the dynamics of the available chaos attractors, chaos anti - control based on the time delayed system parameter perturbation or time delayed state feedback, chaos anti - control based on the precise tracking of the reference chaos system
摘要在介紹混沌化控制的原理、方法、應用的基礎上，對如下混沌化控制方法的國內外現狀進行綜述：基於李雅普諾夫指數配置的混沌化控制、對受控系統施加線性或非線性狀態反饋輸入的混沌化控制、通過對已有混沌吸引子進行變異來實現混沌化控制、通過施加時滯參數攝動或時滯狀態反饋來實現混沌化控制、通過受控系統狀態對已知混沌參考系統狀態的精確跟蹤來實現混沌化控制。Several influence factors to result plasma drift in hainan were analyzed. in this paper the characteristics of ionospheric parameters variation were analyzed systematically and some new results in storm - time such as seasonal behaviors were obtained ; it is the first time to investigate the ionospheric drift behavior in hainan and some new results was obtained, the relationships between each two plasma drift velocity components in storm time in hainan were found and the electric filed variation in hainan ionosphere also was obtained ; the results also show that there are big differences of the ionosphere parameters bo and bl obtained from the data with that obtained from the iri - 2001 applied for hainan ; a new phenomena was found during a strong magnetic storm, that a layer with very strong electron density and density grad was found during the recovery phase of the storm, its horizontal scale is beyond 100km and temporal scale is about 2 hours, this phenomena repeated 3 times continuously. a type of negative disturbance in high and low latitude but positive disturbance in east - asia also has been found
本文較為系統地給出了海南地區電離層的參數變化特徵，特別是得到了一些暴時與以往不同的季節特性；第一次給出了海南地區的電離層等離子體漂移特徵，發現等離子體漂移暴時擾動在三個方向上有內在的聯系，得到了電場變化曲線；研究結果還表明海南電離層的半厚指數和形狀參數等與國際參考電離層iri - 2001存在很大差別；通過對強磁擾動事件期間的參數變化特性分析發現，在磁暴恢復相期間海南地區電離層底部存在一個電子密度非常大的高密度區，高密度區底部電子密度梯度隨高度急劇增加，該區域的水平尺度可達100公里以上時間尺度約為2小時，連續出現過三次，這是一個在海南從來未發現的新現象；研究還發現了暴時東亞地區電離層擾動會出現高低緯負相而中緯正相的現象。The determination of potential downslide surface is one of the most important content, so a method is brought forward. based on the result of 3d nonlinear finite element analysis, a method to determinate the potential downslide surface and safety factor for analyzing sliding force has been put forward
邊坡可能下滑面的確定一直是邊坡穩定分析的一個重要內容，本文提出了根據三維非線性有限元穩定分析結果確定邊坡可能滑裂面及指定安全系數的下滑力的分析方法，為邊坡加固提供參考。This paper starts from the development of container transportation in the world and in our country. it analyzes the situation of the main ports and branch ports. based on the forecast model named line regression, index regression and logis regression, the paper forecasts the throughout of shanghai, qingdao, shenzhen ports
本文從國際和我國集裝箱運輸的發展狀況出發，分析了內支線港口和國際集裝箱港口的發展概況和戰略選擇，並利用線性模型、指數模型和羅傑斯生長曲線預測法對上海港、青島港、深圳港的國際集裝箱吞吐量做了預測，為其發展建設提供了重要的參考依據。Based on the review of the evolutions of stock indices and the innovations of index products, this article discussed the different methods of index replication, and then sum med up those researches on different methods, arithmetic models and their implications, including quadric programming, lineal programming, robust regression, monte carlo simulation and genetic algorithm, etc. aiming to give a technical reference for index derivatives design, index arbitrage, and indexing investment
摘要在回顧證券價格指數演變及指數衍生品創新的基礎上，探討了指數復制的不同方法，進而從文獻綜述的角度對證券價格指數復制中涉及到的方法與演算法模型進行整理，總結了二次規劃、線性規劃、魯棒回歸、蒙特卡洛模擬以及遺傳演算法等不同方法與模型的具體應用，為指數衍生品產品設計、指數套利以及實施指數化投資策略提供技術參考。Secondly, the performance of the acousto - optic steering system is deteriorated as a result of the coupling because of nonlinear of quadrant detector and the pointing error introduced by satellite platform vibration. for this problem, this paper introduces the model reference adaptive control system, and presents the perfect model. the model reference adaptive controller is designed to force the output of the acousto - optic steering system following the output of the perfect model to improve the system performance
其次，針對聲光偏轉系統由於器件的非線性造成的耦合和平臺振動造成的指向誤差導致系統性能惡化問題，引入了模型參考自適應控制系統，提出了理想的模型，設計了模型參考自適應控制器，強迫性能惡化的聲光偏轉系統的輸出跟隨理想模型的輸出，使其性能改善，利用超穩定性理論確定自適應參數以保證系統的穩定性。For these reasons, apart from referring to the uv index predicted by the observatory, members of the public are advised to note the sky conditions, their altitude, and their whereabouts regarding the nature of ground surface, and take the appropriate
建議市民在參考天文臺的紫外線指數預測時，應留意當時的天色所處地點和高度而採取適當的Based on theory analysis and lots of experiment data, converting relation of symmetrical elongation and breaking elongation of testing steel bars have been tropical and the reference to consolidating ductility is provided. at last, in this paper consolidating steel bar ' s ductility by comparing to stress - strain curves of steel bars and is assessed
在理論分析基礎上結合大量試驗數據，回歸出各類試驗鋼筋均勻伸長率_ （ gt ）與斷后伸長率_ 5 （ _ （ 10 ） 、 _ （ 100 ） ）的折算關系，為統一延性評定指標提供參考，進一步比較鋼筋應力?應變曲線和_ （ gt ）值，最終統一評定我國混凝土結構用鋼筋（絲）的延性性能。分享友人