推進加速度 的英文怎麼說

中文拼音 [tuījìnjiāsùdù]
推進加速度 英文
propulsive acceleration
  • 推 : 動詞1 （向外用力使物體移動） push; shove 2 （磨或碾） turn a mill or grindstone; grind 3 （剪或削...
  • 進 : 進構詞成分。
  • 速 : Ⅰ形容詞（迅速; 快） fast; rapid; quick; speedy Ⅱ名詞1 （速度） speed; velocity 2 （姓氏） a surna...
  • 度 : 度動詞[書面語] （推測; 估計） surmise; estimate
  • 推進 : 1 （推動工作 使前進） push on; carry forward; advance; give impetus to 2 [軍事] move forward; dri...
  1. In this dissertation, through computer simulation, the problems of modeling, control and guidance of auvs are presented. the first part of this dissertation addresses the problem of dynamically modeling of auvs, and derives thrusters " two - dimension nonlinear dynamic model, which has axial flow speed and propeller rotational velocity as two state variables, voltage or current of motor as inputs, and thruster force and torque as output. the second part focuses on the nonlinear adaptive sliding mode control of auvs in diving plane and steering plane

    本論文系統研究了自主式水下航行器的建模、非線性自適應滑模控制、以及深度調整和水平面導引方法等問題，具體成果和創新點如下1 、根據流體力學理論，建立了螺旋槳推進器的動態模型，它以螺旋槳來流速度v _ p和螺旋槳轉速n為狀態變量，以電機施加轉矩為輸入，螺旋槳推力t和轉矩q為輸出。
  2. Presently has to emphatically take eight methods for it : taking township project for locomotive to earnestly do well the general grogram on new countryside and new pasture construction ; fulfilling " six great engineering " to accelerate township ' s basic facilities construction of new countryside and new pasture and reinforce socialistic affairs development ; implementing " transformation 、 expansion and promotion " three strategies to increase production and lift efficiency of agriculture and stock breed and raise farmers and nomads ' incomes ; accelerating policy support and financial investments to strengthen the development impetus in countryside and pasture ; further do well program work to lay fundament for prodding the economy rapidly developed in new countryside and new pasture ; enhancing farmers and nomads ' skill training to bring up a group of socialistic new - type farmers and nomads who being cultured, skillful and understanding managements ; entirely deepen the reform in countryside and pasture to enhance the driving force and vitality of development of new countryside and new pasture ; realistically respect and protrude the main body position of farmer and nomad to basically change their traditional value concepts on production and livelihood

    目前要著力採取八項措施：以村鎮規劃為龍頭，認真做好新農村新牧區建設總體規劃；實施「六大工程」 ，加速新農村新牧區村鎮基礎設施建設和社會事業發展；實施「轉變、拓展、提升」三大戰略，加速農牧業增產增效和農牧民增收；加大政策扶持和資金投入力度，增強農牧區發展的動力；進一步做好項目工作，為推動新農村新牧區經濟快速發展打好基礎；加速農牧民技能培訓，造就一批有文化、懂技術、會經營的社會主義新型農牧民；全面深化農村牧區改革，增強新農村新牧區發展的動力和活力；切實尊重和突出農牧民的主體地位，從根本上轉變農牧民傳統的生產、生活方式和價值觀念。
  3. According to the moving characteristics of tracklayer, when the vehicle is on ramp and the ground ' s vertical pressure is linear, the calculating formulas of relationship between the deviation of the instantaneous steering center, the position of vehicle ' s gravity, steering radius, moving velocity, moving acceleration, and vehicle ' s orientation, were obtained by the theory and method of vector analysis in mathematics and mechanics

    摘要根據履帶式車輛的運動特點，運用數力學中矢量分析理論和方法，推導了接地比壓為線性分佈時履帶式車輛在斜坡上轉向時，瞬時轉向中心偏移量與車輛重心位置、轉向半徑、行進速度、加速度、車輛方位相互關系的計算公式。
  4. 37 sot : kalusha bwalya ( english ) also the transition from the back going to the front, you know cristiano ronaldo you know they put pace in their ability to go forward

    Kalusha bwalya說：他們從后場到前場的銜接也很好。克里斯蒂亞諾?羅納爾多能夠大大加快向前場推進的速度。
  5. Considering the similitude law for shaking table test, we study the test results and obtain some conclusions which are a ) generally, the silty soil in test box liquefies and the liquefied time has relation with the amplitude of acceleration, b ) when the intensity is on and above eight degree, the silty soil deposit will be liquefied dramatically, c ) the relationship of the pore water pressure is relevant to the cycle loading which represents when the cycle loading ranges from little to great, the relationship is represent as a concave curve, or else as a protruding curve and tends to stability. ( 3 ) based on the triaxial compression test and the resonant column test, some studies are made such as a ) the duncan - chang parameters of constitutive model, b ) the dynamic shear modulus ratio and c ) the damping ratio of the site soil deposits. in order to deal with the test data, a computer program is compiled

    （ 2 ）利用小型振動臺進行了k _ 0固結狀態下粉土的振動液化模擬研究，通過分析正弦荷載作用下的試驗資料，驗證了粉土的孔隙水壓力增長模式的合理性；從微分方程推導了基於土體振動臺模型試驗的相似律，並從模型實體、孔壓時程曲線和相似律等方面做出了分析，得出了如下結論：在小型振動臺試驗中，模型箱中的粉土都發生了液化，液化的時刻和輸入加速度幅值有關，而對頻率的變化不太敏感；粉土在相當於8 9度地震烈度的加速度幅值作用下可能產生嚴重的液化；孔壓的增長曲線形狀與施加的荷載有關：當施加荷載為由小到大的形式時，曲線形狀為上凹的曲線；當施加荷載為等幅的正弦荷載或荷載幅值由大到小時，曲線形狀為上凸的曲線，且逐漸趨于穩定。
  6. Extreme negative and positive acceleration phases are not a characteristic of swimmers who must be efficient ( e. g., 200 m plus ) who usually demonstrate high rates, almost continuous propulsive force production, and minimum periods of time in long " sculling boat " positions

    最終的負加速度和正加速度階段並不是一個有效率的（例如200多米）和經常呈現高效的，能夠持續產生推進力和盡可能減少處于長的皮劃艇位置的時間游泳運動員的特徵。
  7. Using method of sumt and powell, the thesis carries out optimization design for air rocket with double - push accelerated velocity and spin - rate regularity, which dramatically decreases air rocket dispersion. in the end, some valuable conclusions are achieved for application

    綜合利用雙推力加速度，轉速規律，同時採用內點罰函數法和powell共軛方向法，對航空火箭彈的主要參數進行優化設計，實現了大幅度減小航空火箭彈散布的目的，得到了一些有應用價值的結論。
  8. An on - line minimum - variance estimator was developed for thrust acceleration applied to orbit transfer using discrete - time radar measurements. the mass - flow - rate of propellant was selected as a state variant, which was estimated by employing an integral state model and ekf filter. the variation equations for measurement vector to mass - flow - rate have been established to linearize the discrete - time measurement equations. the algorithm has applied successfully to maneuver process in commanding satellite into geo - stationary orbit. the results show that the algorithm developed here can monitor and determine whether engine works well or failure precisely and quickly during orbit transfer process

    飛行器軌道機動過程中，為跟蹤、定位機動目標和干預機動控制過程，需要統計處理離散的雷達觀測量實時估計推進發動機的推力，進而確定飛行器的瞬時軌道參數.本文所述演算法是該工程問題的探討和解決方案.文章建立了軌道機動過程中連續變質量運動模型和離散雷達量測模型，推進發動機的質量秒耗量作為表徵推力加速度的一個近似常量，應用擴展卡爾曼濾波對離散的雷達測量數據進行順序統計處理給出秒耗量的最小方差估計;文章詳細地推導了線性化量測模型的變分方程和觀測矩陣;模擬結果表明該演算法能快速、準確地估計推進發動機的質量秒耗量和向機動目標施加的實際推力
  9. Some stiffness matrices of special elements such as rubber bearings and components with field are derived from primary - secondary and inverse transform in structural matrix analysis. then, seismic response analytical models and non - isolated continuous rigid frame bridges are set up, while considering the interaction of soil - pile - structure and traveling wave effect simultaneously. finally, the seismic time history response of the two models is calculated by means of the finite element method, and the results show that the isolated bridge posses powerful earthquake resistance

    首先論述了公路大跨徑橋梁的地震反應分析方法，其中包括樁-土-結構相互作用、行波效應等因素對結構物的影響；其次，利用結構矩陣分析中的主從變換和逆步變換，推演了幾個特殊單元的剛度矩陣，包括橡膠隔震層單元和帶剛域構件單元；最後，考慮樁-土-結構相互作用和行波效應的結合，分別建立隔震與非隔震連續剛構橋地震反應分析模型，通過有限元法對兩種結構進行時程分析，結果表明：隔震層上部結構的地震加速度反應、位移反應均明顯減小，這說明隔震的連續剛構橋具有很好的抗震能力。
  10. Kinematic analysis : by denavit - hartenberg method, space geometry relationship of each pole relative to fixed reference frame can be described with equal index transform, also do space relationship of two adjacent poles with 4x4 equal index. so equivalent equal index transform matrix can be deduced from them. when sportive equations and sportive coordinate frame of workpiece exercise point are set up, the coordinate values of exercise point can be got, the pose and situation of two manipulators are analysed, in the end each joint valiable and its velocity, acceleration are worked o ut

    運動學分析：利用denavit ? hartenberg法，用齊次變換描述各個桿件相對于固定參考系的空間幾何關系，用一4 4的齊次變換矩陣描述機鄰兩桿的空間關系，從而推導出等價齊次變換矩陣，建立兩機械手運動方程，確定工件作業點隨動坐標系，求出作業點坐標，對兩機械手的位姿進行解析，求出兩機械手的各關節變量及其速度、加速度值。
  11. Then the general plan of underwater vibrators is put forward. in chapter 3, combining fluid - solid coupling theory and mechanical vibration theory, we get the coupling equation of moving parts and water. the dynamic characteristics of moving parts are studied with theory of finite element, and additional mass of moving parts is found in fluid - solid coupling field, which makes vibrator ' s natural frequency descend and amplitude - frequency curve downward shift

    第三章運用流固耦合理論和機械振動學理論相結合的方法建立運動部件與水的耦合運動方程，利用有限元法對其的動態特性進行了研究，得到了在流固耦合場下運動部件存在的附加質量，該附加質量導致固有頻率下降，單位推力下的加速度頻響曲線整體下移。
  12. According to the curves and equations of the speed, acceleration and displacement about the pallet car given in this paper, the actual tooth profile equation had been presented

    根據臺車進行變加速運動的速度、加速度和位移曲線，推導出了實際齒廓方程。
  13. On the ground of analysis of definition and driving forces of new pattern of rural industrialization, this paper paid much attention to the industrial selection, regional allocation and breach of new pattern rural industrialization and the institutional guarantee to quicken up the rural industrialization in china

    本文在新型農村工業化的概念內涵界定、驅動力分析的基礎上，重點探討了我國新型農村工業化的產業結構、區域布局、突破口以及農村工業化加速推進的制度保障等問題。
  14. Moreover, the components of the radial acceleration are theoretically derived, and the processing methods such as the signal sampling, the dynamic marking and storing, the noise removing, the slope comparison and the onset detection of braking operation are described

    文中對加速度傳感器信號的組成進行了理論推導，並闡述了傳感器信號的采樣、動態標注和存儲、平滑去噪、斜率比較以及制動起始時刻判定等的處理方法。
  15. Firstly, i present a new structure of torque measurement ? rating torque sensor. secondly, introduce the fundamental principle of the dynamic torque. and then bring forward new methods of measuring flywheel moment and acceleration, which has been proved not only by theory, but also by experiment

    本文首先提出了轉矩測量的一種新結構? ?光柵靜態（平均）轉矩測量傳感器；然後闡述了動態轉矩測量的基本原理；接著提出了新的飛輪矩與加速度測量方法，並對其進行了理論推導及實驗證明；最後對提出的通用轉矩測量系統進行了硬體、軟體上的設計。
  16. The stepped - up pace of invention, application and diffusion, in turn, accelerates the whole cycle still further

    反過來，發明、應用與推廣的速度的加快進一步加速了整個過程的循環。
  17. Based on above performances the applications of multi - sensor data fusion in state estimation for maneuvering target is studied systemically. the main work includes : based on the analysis that the extreme value of acceleration presupposed causes influence in the “ current ” statistical model, a modified model is given, which utilizes the functional relationship between maneuvering status and estimation of the neighboring intersample position vector to carry out the self - adaptive of the process noise variance. then combining with the recursive characteristic of kalman filter, an improved self - adaptive filtering algorithm is presented

    基於此，本文針對多傳感器數據融合技術在機動目標狀態估計中的應用進行了系統的研究，其主要工作如下: 1 、基於「當前」統計模型中加速度極限值的預先設定對于濾波效果影響的分析，利用目標機動狀況與相鄰采樣時刻間位置估計量變化之間的函數關系實現噪聲方差自適應，進而提出了一種修正的模型，並結合卡爾曼濾波遞推演算法，提出了一種改進的自適應濾波演算法。
  18. The analysis is focused on the acceleration influence on burn rate of the grain when the solid rocket motor is working under lateral overload. the simple model of burn rate in acceleration field is established. moving laws of burn surface for two different grain type srms are respectively derived, on the base of which zero dimension and one dimension quasi - steady internal ballistic simulation models are established

    分析了橫向過載對固體推進劑燃速的影響，建立了橫向加速度場中的簡化燃速模型，推導了兩種不同藥型的燃面退移規律，在此基礎上進行了零維、一維準定常內彈道計算與分析，建立了固體火箭發動機內流場三維兩相流模型。
  19. In this paper we do some research on gyro - free inertial measurement as follows : we do some researches on the calculation of angular velocity which is quite critical in inertial measurement system and also deduce the output equation of the accelerometers in a specific coordinate

    本文將就以下幾個方面對無陀螺慣性測量進行研究:對無陀螺慣性測量中的關鍵問題即角速度的解算進行了研究，推導了特定坐標系下的加速度計輸出方程。
  20. We believe that they have to move more aggressively in this direction, but they are monitoring it and they are following it, but i knew they do have commitment to keep moving in the direction that they have indicated to us and they have indicated especially to treasury secretary snow

    我們認為他們必須加快向這個方向推進的速度，不過他們正在追蹤觀察，我知道他們確實致力於繼續向他們對我們及對斯諾部長表明的那個方向推進。
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