約束流形 的英文怎麼說
中文拼音 [yāoshùliúxíng]
約束流形
英文
constraint manifold-
This paper starts the research of the liquid floated pendulous accelerometer testing system according to the engineering. at first, this paper gives the brief introduction of the history and present status of accelerometer and its testing technology, the working principium and math model of the liquid floated pendu - lous accelerometer, and then, decides the binary width pulse force retrim loop as the design proposal of testing system, researches the transfer function of every part in the system emphasizly, analyses the stability of the whole accelerometer testing system from the angle of control theoretics by the open loop transfer function of system, and designed the correcting net, analyses the basal problems such as resolution, sampling restraint, precision and so on, designs the hardware testing circuits such as preamplification, band - pass filter, alternating amplifier, phase sensitive demodulatorn, pulse - width modulation, frequency scale circuit, moment current generator. finally, using the graphics program language labv - iew which is designed for testing field especially by ni accomplishes the solfware design of testing system, realized the testing functions
首先對加速度計及其測試技術的發展歷史和現狀，液浮擺式加速度計的工作原理和數學模型等作了簡要的介紹，然後確定了以二元調寬脈沖再平衡測試迴路為設計方案，並從控制理論的角度進行了分析，著重研究了系統中各部分的傳遞函數，利用系統開環傳遞函數分析了系統的穩定性，同時設計了系統的校正網路;分析了二元調寬脈沖再平衡測試迴路的解析度、采樣約束以及測試精度等基本問題，並按照系統分析的結果設計了包括前置放大、帶通濾波、交流放大、相敏解調、脈寬調制、頻標電路以及力矩電流發生器等測試系統各部分硬體電路，驗證了電路的正確性，最後按照測試系統的要求，採用了美國ni公司專為測試領域所開發的虛擬儀器工具? ? labview作為測試軟體開發工具，利用該圖形化編程語言完成了測試系統軟體部分的設計，實現了測試功能。The numerical algorithm of solving the adjoint equations for different design cases have been developed by using finite volume methodology which is usually used to solve the flow governed equation. it includes the some important aspects, such as flux formulation, wall and far - field boundary treatment methodology, dissipative term formulation, etc. after the solution of the adjoint equations is obtained, the derivatives of the cost function with respect to all the design variables can be evaluated with the same operation. this can yields a significant saving over the other gradient - based techniques when there are many design variables
（ 3 ）進行了應用控制理論和三維歐拉方程的機翼氣動反設計研究，以及有升力約束情形下機翼跨音速減阻問題研究，分別推導了相應的共軛方程及邊界條件數學表達形式，研究與發展了三維共軛方程的有限體積數值求解方法，及相應梯度公式的數值求解方法，通過對計算網格生成、流場計算、共軛方程數值求解、梯度求解和優化演算法等多方面的有效結合，成功發展了三維機翼的氣動反設計和跨音速減阻優化設計程序，成功地進行了多個設計算例研究。On one side, tncs " m & a practices constitute a external force pushing china ' s further soes " reform, such as diversification of corporate ownership, enhancement of corporate governance structure, effective incentives mechanisms for corporate managers, upgrade of domestic enterprise ' s international competitiveness, introduce of competition mechanisms in monopoly industries, and so on. on the other side, tncs " m & a practices may bring some potential risks, such as soes " losing dominant position in strategic industries, costs of m & a failures, less employment opportunities, risks of embezzlement of stated owned assets, and tncs " abuse of market power
五、跨國公司對中國企業的並購猶如一把雙刃劍，一方面它將有利於國有產權的多元化、公司治理結構的完善、控制權市場的形成、經營者的有效激勵約束、企業國際競爭力的提升、以及壟斷行業競爭機制的引入；另一方面，它也會產生各種風險，如國有經濟戰略性地位喪失的風險、整合失敗的風險、就業減少的風險、國內資產流失的風險、以及跨國公司非競爭性行為發生的風險等。This paper focuses on the control strategies to improve the performance of the three - phase ac - dc pwm voltage - source - converters ( vsr ) under unbalanced power supply. the problems such as negative sequences current, voltage and current harmonics and un - constant ( un - smooth ) power flow from ac to dc side are discussed in this paper. the analytical solutions for negative sequence current and harmonic current elimination are obtained by fully feed - forward of negative sequence voltage and producing a non - harmonic current command of the inner - loop
電網不平衡時，基於電網平衡為約束條件設計的三相vsr將出現不正常運行狀態，比如三相vsr交流電流中出現負序分量，使交流電流嚴重不對稱；直流電壓和交流電流中出現非特徵諧波分量，使直流電壓和交流電流波形發生嚴重畸變；三相vsr從電網吸收不平衡的瞬時功率等一系列問題。I didn ' t have to act like anyone else. i just had to be the best me i could be
和我上次交流提到的想從非建築的領域取得靈感類似，很喜歡有機建築沒有約束的形式。希望能夠加入！Firstly, the paper, combining the characteristic of synchronous pulse bursts and inhibition with the modified pcnn model, presents a way of finding the foveation points in the images adaptively and effectively, and simulates the human vision system. secondly, pcnn is extended to pcnns, based on the properties of information couple and transmission, an algorithm that is used to fuse images of the same target got by several sensors to an image is presented to simulate the human vision system. thirdly, combining the properties of synchronous pulse bursts, capture, and transmission and competition of waves, the paper presents two ways of classification, one is an algorithm based on the properties of neuron to capture and inhibit to classify the data taking on any complex unlinear distribution robustly, the other is based on the restricted distance and modified of the former to remove the influence of inferior samples in classification ; fin ally, based on the accumulative difference pictures, and the forming and transmission of pcnn wave, selecting and controlling the direction of autowave by connecting the neighbouring neurons selectively, the paper presents a way to simulate the tracks of moving object and detect the moving direction
首先結合pcnn的同步脈沖發放和側抑制特性，提出了基於改進型pcnn的圖像凹點檢測演算法，該演算法是一種自適應而有效的圖像凹點檢測方法，並且較好地模擬了人類視覺系統；然後，結合信息傳遞和信息耦合特性，將pcnn擴展成pcnns （ pcnn網路群） ，提出了一種基於pcnns的圖像融合演算法，能夠將多個傳感器獲取的同一目標的圖像信息融合到一幅圖像中，有效模擬了人類視覺系統；另外，結合pcnn的同步脈沖發放特性、捕獲特性和波的傳播競爭特性，開拓地將pcnn用於模式分類中，提出了基於耦合神經元點火捕獲抑制特性的分類方法和改進的約束距離下的pcnn分類方法，前者可實現對樣本空間中任意復雜分佈訓練樣本的穩健非線性分類，而後者能夠消除訓練樣本中刺點對分類的影響；最後，結合累積差分圖像思想、 pcnn波的形成與傳播特性，通過各神經元之間連接取向來選擇與控制自動波的流向，將pcnn用於運動視覺分析中的運動軌跡模擬及運動方向檢測。As the basis of stochastic torsional analysis, a stepped thin - walled beam model with complex cross - sections of arbitrary shapes ( open, closed or mixed ) is established in this paper, which takes into account the effect of secondary shear flow resulting from warping restraint
摘要具有復雜斷面形狀的階梯精密梁模型作為扭轉隨機分析的基礎，可以計及翹曲約束引起的二次剪流。This article is divided into five parts totally, explaining the special relationship between palestine and jordan from the aspect of economy, military and population etc. in the fist part, origin of jordanian - palestinian relations is been discussed ; in the second part, i expatiate upon the development of the jordanian - palestinian relations from 1967 to the late of 1970s, and generalize that the character in this period is cooperation and conflict ; some important history events are expounded in the third part, such as the camp david agreement, the lebanon war, the reagan plan, the jordanian - plo agreement and the palestinian intifada. at the same time, the conclusion can be drawn that the relationship between the plo and the jordanian government was characterized by instability, mutual mistrust, caution and rivalry ; in the fourth part, after the end of the cold war, both jordan and plo adopted practical policies, and then the relationship of equal colleague has become the main trend ; in the last part, i summar ize the predominant factors which influence the relationship between jordan and palestine and give history outlook to the future jordanian - palestinian relations
第一部分，重點闡述約巴特殊關系形成的歷史淵源；第二部分，採用對比的手法，通過對1967年70年代末約旦與巴解組織之間關系演變的歷史考察，深刻揭示出在這一時期約巴關系的特點是短暫合作和長久沖突；第三部分，通過對戴維營協議、黎巴嫩戰爭、里根方案、約巴協議聯合行動方案、巴勒斯坦大起義等重大歷史事件分析，闡釋約巴關系親密接觸和悲歡離合的內在原因，推論出80年代的約巴關系具有不穩定、不信任、謹慎、競爭甚至反復等特點；第四部分，冷戰結束后，政治解決地區沖突已成為地區局勢發展中的一股主流，約巴雙方都採取了新的務實政策，平等友好關系是約巴關系發展的主流；第五部分，這是全文的落腳點，總結制約和影響約巴關系主導因素，並且展望未來。For example, when using pid control method of controlling the electrical current of the discharge, with the discharge tube exposed to the outside with very good thermal dispersion conditions, unrestrained thermal expansion back - pack style he - ne laser tube gave good results
採用控制激光器的放電電流的pid控制模式，在放電管外露，散熱條件好；熱變形不受約束的背包式he - ne激光管上取得了很好的效果。In chapter no. 2, the author analyzes the plan economy system. since there was no professional entrepreneur and no effective invigorative and restrictive system for managers in our country, the enterprise managers had no respect or achievement and made no effort due to no " self ", enterprise short term behavior and " 59 - year old " phenomena appeared in large scale, state owned capital was lost in either perceptible or imperceptible ways
第二章分析在計劃經濟體制下，由於我國沒有形成職業企業家隊伍，沒有建立有效的經營者的激勵和約束機制，導致的最主要的問題是企業經營者無「私」無畏、無「私」無為和無私不為等現象，致使企業短期行為以及「 59歲」現象大量出現，造成國有資產有形無形地流失。A novel strip - coil - baffle structure used to enhance heat transfer and support the tube bundle for a tube - shell heat exchanger is proposed. the new structure can sleeve the tubes in bundle alternatively to create a vortex flow in a heat exchanger. the numerical simulation on the flow and heat transfer characteristics for this new structure heat exchanger is conducted. the computational domain consists of two strip - coil sleeved tubes and two bare tubes oppositely placed at each corner of a square. the velocity and temperature fields in such strip - coil - baffled channel are simulated using fluent software. the effects of the strip - coil - baffles on heat transfer enhancement and flow resistance in relation to the reynolds number are analyzed. the results show that this new structure bundle can enhance the heat transfer coefficient up to a range of 40 ? to 55 ? in comparison with a bare tube bundle ; meanwhile, higher flow resistance is also accompanied. it is believe that the strip - coil - baffled heat exchanger should have promising applications in many industry fields
介紹了一種用於強化管殼式換熱器殼側傳熱和支撐管束的螺旋折流片新型結構，該結構是對換熱器管子相間地套上螺旋折流片以產生旋渦流動.研究模型是在正方形布置的4個管子中的2個對角管子套上螺旋折流片后形成的通道，利用fluent軟體對該上述四管通道模型的流場和溫度分佈情況進行了數值模擬;分析了四管通道模型中螺旋折流片對強化傳熱和流動阻力隨雷諾數的變化關系的影響.算例結果顯示該新型結構可比相同尺寸的光管通道中的情形傳熱系數提高約40 ? 55 ? ，同時也將伴隨較高的流動阻力.可以相信螺旋折流片式換熱器將會在許多工業領域有良好的應用前景Abstract : a novel strip - coil - baffle structure used to enhance heat transfer and support the tube bundle for a tube - shell heat exchanger is proposed. the new structure can sleeve the tubes in bundle alternatively to create a vortex flow in a heat exchanger. the numerical simulation on the flow and heat transfer characteristics for this new structure heat exchanger is conducted. the computational domain consists of two strip - coil sleeved tubes and two bare tubes oppositely placed at each corner of a square. the velocity and temperature fields in such strip - coil - baffled channel are simulated using fluent software. the effects of the strip - coil - baffles on heat transfer enhancement and flow resistance in relation to the reynolds number are analyzed. the results show that this new structure bundle can enhance the heat transfer coefficient up to a range of 40 ? to 55 ? in comparison with a bare tube bundle ; meanwhile, higher flow resistance is also accompanied. it is believe that the strip - coil - baffled heat exchanger should have promising applications in many industry fields
文摘:介紹了一種用於強化管殼式換熱器殼側傳熱和支撐管束的螺旋折流片新型結構，該結構是對換熱器管子相間地套上螺旋折流片以產生旋渦流動.研究模型是在正方形布置的4個管子中的2個對角管子套上螺旋折流片后形成的通道，利用fluent軟體對該上述四管通道模型的流場和溫度分佈情況進行了數值模擬;分析了四管通道模型中螺旋折流片對強化傳熱和流動阻力隨雷諾數的變化關系的影響.算例結果顯示該新型結構可比相同尺寸的光管通道中的情形傳熱系數提高約40 ? 55 ? ，同時也將伴隨較高的流動阻力.可以相信螺旋折流片式換熱器將會在許多工業領域有良好的應用前景Taking a rotor shape parameter as a variable, the minimum volumes of rotor cavity and pump flow as the design objectives, as well as some constraints on rotors and gears cavity structures, an optimization design model of un - contact rotor pump was constructed
摘要以轉子形狀參數為變量，以流量和轉子腔體積最小為設計目標，考慮齒輪腔和轉子腔結構的有關約束，建立了非接觸式轉子泵的優化設計模型，給出了優化設計步驟。In this approach, an target pressure distribution is developed using a set of control point and require only global parameters as input. the chordwise locations and pressures of these points are then aptly adjusted during process to satisfy the flow and geometric constraints
本文根據總體設計參數用一系列控制點來生成目標壓力分佈，在設計過程中這些控制點的位置和大小可以適當調節以滿足流動和形狀約束。This paper implements differential formation of quasilinear differential equations, furthermore lumped equivalent circuit mode at boundary and constraints between voltage and current have been incorporated to find boundary conditions. because partial differential equations can transform into ordinary differential equations, it transforms telegraph equations into ordinary differential equations
本文根據偏微分數值解理論應用一階擬線性方程的差分格式，並根據電壓、電流在始端、終端上的約束關系，運用傳輸線集中參數的等效模型確定邊界條件；最後模擬計算得到響應波形。Marxist theory ' s open teaching in colleges means that by communication and feedback of information, the subject, subject and object, subject - object and reality in teaching activities realize two - way choice, restriction and improvement, thus forming a standardized and available way
摘要馬克思主義理論的開放式教學，是指教學主體、主客體、主客體與現實之間，通過教學活動中的能量與信息的交流和反饋，實現雙向選擇、雙向約束、雙向促進的標準化、規范化且可操作的教學形式總稱。Meanwhile, the semantics of syntactical structure, constraint condition and super activity graph were discussed. this idea defined the formal semantics appropriate for work flow for super activity graph and completed the establishment of the mathematical model of work flow. apart from that, the executive algorithm of the activity graph in the formal semantics of work flow activity graph were put forward
同時對活動超圖的語法結構、約束條件及活動超圖的語義進行了討論，並為活動超圖定義了適用於工作流模型的形式化語義，從而完成工作流數學模型的建立，提出了工作流活動圖形式化語義中活動圖的執行演算法。However, the research of logistics in our country is still lacking. there are some shortages in the logistics operation management, information modernization, production model and storage model, which leading to unbalance to the logistics of enterprise, inefficiency to the system, increase of opportunity cost, and harm to the development of company
例如在製造企業中，存在物流作業管理、監控不完善，信息現代化程度低，生產模型不合理，倉儲分類、管理無序化等不足，這樣在生產中形成了多處瓶頸，使企業內物流不平衡，系統效率的提高受到約束，產生巨大的機會成本，給企業帶來諸多不良影響。( 3 ) building the blmop model of supply chain, which contains the manufacturer, retailers and suppliers, and considered the constraints of logistics, information flow, capital flow and reverse logistics
與傳統模型只考慮物流約束不同，論文考慮了物流、反向物流、信息流和資金流四方面的約束情形。An airfoil shape design method that couples viscous flow analysis, a complex method and parallel calculation is described in this paper. the method is applied to search an airfoil geometry with improved aerodynamic performance at single or multiple design - point while the specified design constraints being satisfied
本文將流場分析程序、復合形優化方法和并行計算耦合起來，發展了一種工程實用的翼型優化設計方法，用以提高翼型在單個或多個設計點、多種約束條件下的氣動性能。分享友人