速度平面 的英文怎麼說
中文拼音 [sùdùpíngmiàn]
速度平面
英文
velocity plane- 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
- 平 : Ⅰ形容詞1 (沒有高低凹凸 不頃斜) flat; level; even; smooth 2 (高度相同; 不相上下) on the same l...
- 面 : Ⅰ名詞1 (頭的前部; 臉) face 2 (物體的表面) surface; top 3 (外露的一層或正面) outside; the ri...
- 速度 : 1. [物理學] velocity; speed; blast; bat 2. [音樂] tempo3. (快慢的程度) speed; rate; pace; tempo
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Robust control of planar parallel robot with redundant actuation
平面並聯機器人的速度控制精度分析Height of anemometer : 90m above mean sea level
風速表的高度:高於平均海平面90米Elevation of anemometer : 69m above mean sea level
風速表的高度:高於平均海平面69米Elevation of anemometer : 14m above mean sea level
風速表的高度:高於平均海平面14米Elevation of anemometer : 16m above mean sea level
風速表的高度:高於平均海平面16米Elevation of anemometer : 71m above mean sea level
風速表的高度:高於平均海平面71米Elevation of anemometer : 90m above mean sea level
風速表的高度:高於平均海平面90米This paper mainly discusses about the acceleration response of the artillery that is caused by the plainness causes under traveling condition. and according to the system aspect of the matching between the tractor and artillery which composes the artillery train, it also presents the characteristics of the steering, braking stability and manipulating stability which affects the artillery moving maneuverability
本文在火炮設計領域首次對火炮牽引列車系統進行動力學分析,重點研究了火炮牽引行駛狀態下的路面不平度對火炮的加速度響應,並從牽引車與火炮匹配組成火炮列車的系統角度,研究了影響火炮行駛機動性的轉彎特性、制動穩定性和操縱穩定性。And the explicit finite difference method, the combining method of the central difference method and newmark s constant average acceleration method, and the transmitting boundary are used. by comparing the acceleration determined by the several methods of the displacements or velocities, a computing method of acceleration employed the one side difference of velocity is more practicality in this research. corresponding to normal incidence of the body waves, p waves or svwaves, and rayleigh surface waves, two two - dimensional finite difference programs are compiled to compu te the dynamic response of two - phase media
以土力學模型為基礎,利用以土骨架和孔隙流體的四個位移為基本未知量的數值方法去模擬二維飽水介質中的地震波傳播,採用了顯式差分方法(中心差分法和newmark常平均加速度法結合)和透射邊界,通過比較利用幾種差分格式求解的加速度結果,發現一種用速度單邊差分求解加速度的方法在本文研究中較為實用,分別編制了體波( p波或sv波) 、 rayleigh面波輸入時求解兩相介質動力響應的兩個二維數值分析程序。Heat convected, a mode of motion developed by such combustion, was constantly and increasingly conveyed from the source of calorification to the liquid contained in the vessel, being radiated through the uneven unpolished dark surface of the metal iron, in part reflected, in part absorbed, in part transmitted, gradually raising the temperature of the water from normal to boiling point, a rise in temperature expressible as the result of an expenditure of 72 thermal units needed to raise i pound of water from 50 to 212 fahrenheit
燃燒所引起的運動形式之一-熱對流傳熱,不斷地加速度地從熱源體傳導給容器中的液體,由那凹凸不平未經打磨的黑色鑄鐵面把熱向周圍發散出去一部分反射回來,一部分被吸收,另一部分被傳導,使水的溫度從常溫逐漸升到沸點。這種溫度的上升可作為消費結果標志如下:將一磅水從華氏五十度加熱到二百十二度,需耗七十二熱量單位。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。But as soon as it grew dusk in the evening, i chang d my course, and steer d directly south and by east, bending my course a little toward the east, that i might keep in with the shoar ; and having a fair fresh gale of wind, and a smooth quiet sea, i made such sail that i believe by the next day at three a clock in the afternoon, when i first made the land, i could not be less than 150 miles south of sallee ; quite beyond the emperor of morocco s dominions, or indeed of any other king thereabouts, for we saw no people
這時風勢極好,海面也平靜,我就張滿帆讓船疾駛。以當時船行速度來看,我估計第二天下午三點鐘就能靠岸。那時我已經在薩累以南一百五十英里之外了,遠離摩洛哥皇帝的領土,也不在任何國王的領地之內,因為那兒我們根本就看不到人跡。She offers an outstanding range of machinery in the granite and marble processing cycle, including gang saws ang slab polishing lines. in the past years, she held and reached the change of industrial structure. the pioneering technology and the hope of customer are always reflected in the producs with the quickest speed. shengda products shared chinese market and worked well in many cuntries such as italy, usa, australia, turkey, thailand, etc. she is perfecting selling and service networks in allover the wold, shengda allows the customers to keep down the manufacturing costs to better environing conditions and to reach the top quality standard suitable for market requirements
在科技研發方面,公司以博士後作為負責人,構建了一個由多名高科工程師工程師組成的研發團隊,使公司技術始終領先同行,形成生產技術上的優勢,通過技術改造產品開發技術攻關技術引進,以最快的速度將最新的石材加工技術和客戶的需求反應到產品生產中,使技術和設備走在同行的前端,產品保持國內外同行先進水平,出口到義大利美國澳大利亞韓國和泰國等幾十個國家,受到了石材加工業者的青睞。At linear stage, the theoretical growth rate for the rt instability in cylindrical and spherical geometries was enhanced ( or reduced ) due to the decrease ( or increase ) in the perturbation wavelength during an implosion ( or explosion ). even in the absence of an acceleration the perturbation could grow in the convergent geometries. the amplitude growth rate was proportional to the cube of the convergent ratio in spherical geometry and to the square of the convergent ratio in cylindrical geometry
在線性階段,已有的研究表明:一方面,在內爆(或外爆)過程中擾動波長變短(或變長) ,使得不穩定性的增長率變大(或變小) ;另一方面,即使不存在界面加速度,界面運動仍然可能導致擾動幅度的增加,柱幾何中擾動幅度的變化速率正比于界面收縮比的平方,球幾何中擾動幅度的變化速率正比于界面收縮比的三次方,並且擾動幅度的變化方式(增加或減少)只與初始時刻擾動幅度的增長速率(正或負)有關,而與界面的運動方向(向內或向外)無關。On the other hand, we accomplished the asic design flow successfully based on the fpga design. we have made the most use of various optimization methodology and simulation tools include dynamic simulation, static timing analyzing and post simulation. at last this design net list was past to layout design team in order to check its electronic characters
在我們的asic流程中,首要的因素是在fpga驗證其正確性的基礎上對速度與面積進行科學有效的平衡,在成本和性能中間取得良好的結合點,運用先進的eda設計工具和演算法對設計進行綜合優化( synthesis ) ,動態時序分析( dynamicsimulation ) ,靜態時序模擬( sta )到自動布局布線( apr )之後將寄生參數反標回前面的步驟進行更精確的判斷和分析,最後交給版圖設計人員進行版圖設計和優化。The topic is from the national " 973 " project " the new principles and methods of high - performance electronic components of digital product design manufacturing ". closely combing with the high - speed high - precision planar parallel position robot developed by the project, we have carried out a deep research on robot control system architecture, time - optimal control algorithm and servo system control algorithm, achieving high - speed and high - precision point to point control and trajectory tracking control
本課題來源於國家「 973 」計劃項目「高性能電子產品設計製造精微化數字化新原理和新方法」 ,密切結合該項目所開發的高速高精度平面並聯定位機構,對機器人控制系統體系結構、時間最優控制演算法以及伺服系統控制演算法進行了深入的研究,實現了高速度、高精度的點位控制和軌跡跟蹤控制效果。Some new features of the climate change in china in recent 50 years is shown by investigating the characteristics of the change of temperature, precipitation, relative humidity, wind speed and sea level pressure based on the 740 stations daily data in china, which is the most complete station data set in china processed by national meteorological center recently
利用國家氣象中心最近整編的中國740站逐日資料,通過對中國溫度,降水,相對濕度,地面風速,海平面氣壓這5個氣象基本要素變化特徵較為全面的分析,揭示了近50年中國氣候變化的一些新特徵。Spectral method and spectral element method are both used in the present dns. the flow is developed from an initial velocity field whose mean and root mean square values are fitted to the experimental data. the reynolds number of the flow is 2250 based on the mean velocity and the radius of the pipe
本文在空間離散上採用譜方法和譜元法的結合,通過在圓管層流速度剖面上疊加隨機擾動作為初始場的方法,計算了管長為,平均雷諾數為2250的光滑圓管內的湍流流動,建立了圓管內較低雷諾數下速度場和壓力場的數據庫。In this paper, an improved genetic algorithm ( ga ) was applied to the design of high performance e - plane waveguide filters at the first time. for dealing with the shortcoming of ga as low efficiency in local optimum searching, the idea based on parallel genetic algorithm ( pga ) known as separate local optimization was presented. by separating the whole population into sub - populations, and adding a new operator known as crossover between two sub - population, the new method can provide as 2 3 times quickly as traditional ga. all numerical examinations illustrated the high convergence speed and good global searching of the new algorithm, and proved the validity of it
由於遺傳演算法表現出良好的全局搜索性能,因此本文將其應用於高性能e面波導濾波器的設計中.針對傳統遺傳演算法所存在的局部搜索能力差的缺點,本文在并行遺傳演算法的基礎上,通過將原有群體劃分為多個子群體,利用多個子群進行局部極值點的搜索,並利用群間遷徙,使改進后的演算法收斂速度平均提高了2 3倍.數值實驗表明演算法具有較快的收斂速度和較好的全局搜索性能,證明了演算法的有效性New high speed and high precision planar positioning mechanism for chip packaging
面向晶元封裝的新型高速高精度平面定位機構研究分享友人