點在圓弧上 的英文怎麼說
中文拼音 [diǎnzàiyuánhúshàng]
點在圓弧上
英文
point on arc-
Such research can lead to a new flight procedure design methodology, which copes with these problems and makes strong economical senses. under the guidance of aviation safety, efficiency, regularity and economy, this thesis applies the principle of the instrument flight procedure, firstly, to research the current vor / dme instrument flight procedure, namely the vor / dme instrument flight procedure ( vor / dmf. ifp ), its holding procedures, departure routes, arrival routes, and approach procedures, cor the terminal airspace
本文在安全、效率、正常和經濟的原則下,運用儀表飛行程序設計的思想和原則,首先對在vor / dme導航臺上建立儀表進場航線、等待程序、儀表進近程序和儀表離場航線等機場空域內的飛行程序的設計方法進行了研究,總結出不同位置的vor / dme儀表飛行程序的布局形式、適用情況及其優缺點,並首次提出了以vor / dme為基準的封閉圓弧進近程序;其次,研究了基於vor / dme導航臺的區域導航飛行程序的設計方法;最後,研究了在現有的vor / dme儀表飛行程序上建立區域導航飛行程序的設計方法。A two - dimensional plain strain finite element model of infinite plate is developed to investigate the ultrasonic wave propagation and scattering on three kinds of cracks : parallel to the surface, 450 oblique angle to the surface, and quarter - circle
摘要建立了無限長板的具有吸收邊界的二維平面應變有限元模型,在研究了脈沖超聲波在無限長板中傳播的基礎上,對板中平行於表面的裂紋、與表面成45的斜裂紋和四分之一圓周弧形裂紋三種情況的脈沖超聲波散射進行了重點研究。Choi wan, the violet blue open atrium, busy, spit 1 : 00 rhodopsin, slow rise gradually turned into a small arc, semicircle ; into color, the red ; then a jump slightly, with a hint of the things that is evanescent tail light, a round red inlay in the horizon
彩雲下,空曠的紫藍色的天幕上,一剎間,吐出一點紫紅,緩慢上升,逐漸變成小弧、半圓;變成桔紅、金紅;然後微微一個跳躍,拖著一抹瞬息即逝的尾光,一輪圓圓的紅日嵌在天邊。It supposed that the circle of sliding surface run through the foot of slide. the factor of safety is transmitted to the function of x coordinate of the intersection point of the tangent at the scrap of the circle and x axis. so, the two - dimension area of searching is changed to one - dimension
該方法先固定潛在滑動圓弧的上、下邊界點,利用滑弧后緣處的切線與x坐標軸交點的位置確定了滑弧的曲率,將二維搜索麵域簡化為一維搜索線域,搜索的上、下限有嚴格的界定,不存在漏點問題。The function of the software use pc - computer to dispose the output signal which is produced by the device as following steps : ( 1 ) to input data by parallel interface ( 2 ) to record and form a file ( 3 ) to demonstrate results step by step ( 4 ) the results could be compiled ( 5 ) it can synthesis in the permitted error scope, substituted original dot for line or arc, finally we could get a graph that is described by some simply curve. ( 6 ) to convert these graph into a program, which used in the cutting process of numerical control. ( 7 ) the software also includes some protective methods
而系統處理軟體的作用是:利用pc兼容機,將上述裝置的輸出信號( 1 )通過并行口輸入( 2 )記錄成文件( 3 )逐點顯示出來( 4 )可人工進行化簡,編輯(刪、改點)等( 5 )可在給定誤差范圍內進行人工擬合,用直線和圓弧取代原來的點,得到一個與原圖形的誤差在規定范圍內,又消除跟蹤過程中因受到各種干擾而造成的缺陷,由盡可能少而簡捷的數學曲線描述的圖形( 6 )把這些圖形轉化成用於編制數控線切割加工程序及autocad能夠識別的文件(主要指dxf格式) ( 7 )該軟體還有一定的加密措施。A general stack equation of mobile robot based on analyzing the motion of planar motion object and the mathematical models of four different kinds of common wheels is developed, accordingly, the mobility of mobile robot is addressed and the forward and inverse solutions to speed for specific configuration driven by differential speed are derived. utilizing the muir and newman convention, the description of the posture transformation matrices between different coordinate frames and the solution for the speed of point located on these frames are introduced. according to posture estimation, a more accurate method, dead reckoning algorithm, is developed for a specified configuration characterized by differential speed motorization, and simulations of this algorithm and other traditional methods are carried out using matlab while traversing a circular path
本文對兩輪差速驅動移動機器人的運動學及其本體緩沖設計進行了探討,在對平面運動物體運動分析的基礎上結合四種常用車輪的數學模型,推導出了一個通用的移動機器人堆積方程,在此基礎上分析了移動機器人的移動能力、並針對兩輪差速構型推導了速度正解與逆解;使用muir和newman的運動學建模方法,推導了移動機器人上點及連桿坐標系位姿、速度變換關系矩陣及求解方法;在移動機器人位姿識別方法中結合差速驅動構型對航位推演算法進行了分析:推導了一種理論精度較高的航位推算演算法,並使用matlab對其與傳統的推算演算法在跟蹤圓弧軌跡情況下進行了模擬;最後針對本文所研究的機器人給出了一種比較系統、可靠的緩沖結構設計思路,較好地解決了移動機器人作業過程中外界因素及本身設計中引入的各種不確定誤差問題;本論文研究成果已在本實驗室所開發的樣機上得到實現,經過應用與考核證明其中的分析與設計是切實可行的。In this paper, based on the analysis of the rlem of theory foundation, computing method, preference, applicability, etc, we anatomized the rlem of three self - deficiencies and six scarcities. moreover, we adopted the parallel ways of contrasting the rlem with the fem and applied it to analyzing the impact of slide block of elasticity and plasticity, slip surface of coefficient and slip bed of elasticity, plasticity upon the stability of slope and in the plain linearity slope, the plain refracted line slope and the plain arc slope. in addition, we discussed the warp of between the lem of ( sarma, janbu, order, bishop, morgenstera - price, etc ) and the fem of result and the distributing of positive stress and shear stress on the slip surface
本文從剖析剛體極限平衡法的理論基礎、計算方法、參數選取、適用條件等方面入手,剖析了剛體極限平衡方法的3點自身缺陷和6點不足,並在此基礎上採用了剛體極限平衡法(平面滑動破壞法、 sarma法、傳遞系數法、普遍條分法、 janbu法、 bishop法、 morgenstern - price法)與大型有限元法對比研究的方法,分析研究了平面直線型滑坡、平面折線型滑坡、平面圓弧型滑坡在漸進破壞中邊坡的滑體彈塑性參數、滑麵塑性參數) 、滑床的彈塑性、以及極限平衡法無法考慮開挖應力釋放等因素對邊坡穩定性的影響與滑動面上的正應力、剪應力分佈規律、安全系數的解答的差異。Physical model test about vertical and several arc type wave screens which were commonly used was carried out, measuring the wave force and overtopping on the wave screens, analyzing the characteristics of wave force and overtopping of different types of wave screens, and researching the mutual relationship between the wave force and overtopping due to different types of wave screens, to service as a reference for wave screen design of sloping breakwater
通過對常用的直立式及幾種圓弧式防浪墻進行物理模型試驗,測量作用其上的波浪力和越浪量,分析不同防浪墻形式在受力和越浪上各自的特點,並討論防浪墻型式引起的越浪和受力的相互關系,可供料坡堤防浪墻設計參考。The curvature interference of the gear and the influence of radius of the mill - cutter, axial misalignment, and center distance on meshing are analyzed. based on these analyses, propose two methods to achieve point - contact : to change the radius of the mill - cutter and increase the center distance
在分析了弧齒線圓柱齒輪的嚙合傳動不產生曲率干涉的條件和刀盤展成半徑、軸線平行度誤差、中心距對嚙合影響的基礎上,提出了點接觸弧齒線圓柱齒輪實現的兩種方案:調整刀盤展成半徑和增大中心距。With the help of this program, this paper does research on the moved backwards of the slide surface, lengthening the anchor section, the soil nail ' s total force, gets conclusion about relations between the soil nail ' s length and the slope ' s grade, height, soil ' s mechanical parameter ; relations between soil nail ' s total force and coulomb soil pressure. with the help of the large multiuse finite element program ansys, this paper analyzes the soil nailing in one - step ' s slopes, in two - steps " slopes, puts the emphasis on the axis force ' s distributing along the soil nail at each rows, the effect of both the excavating mode and the original slope figure to the axis force of the soil nail, the one another effect between the upper - step slope and the nether - step slope in the soil nail ' s axis force, gets conclusion about the design of soil nail at the first low, different slope body is the same with different excavating mode, the original slope figure has more effect to some than others because of the slope body, the reasonably design of the step width in two - steps slopes, the two - steps excavating and retaining has more virtue than the one - step ' s. through soil pressure analysis this paper does research on the differences and the links between the coulomb soil pressure theory and the rankin ' s, the vertical pressure at the slope surface when the slope surface is inclined and the retaining wall is rough, the soil pressure ' s distributing behind the panel, gets conclusion about the effect of both the slope body inner stability and the slope surface local stability to the soil pressure
通過分析比較,論證了對數螺旋線型比圓弧形作為邊坡的假設滑裂面具有較多的工程優點,並為此編制了一個採用極限平衡法分析土釘支護的fortran語言程序,以此作工具對滑裂面的后移、土釘錨固段的超長、土釘總力的大小等方面作了研究,得出了有關土釘的長度與邊坡的坡角、坡高、土體力學參數的關系、土釘總力與庫侖土壓力間的關系等結論;採用大型通用有限元數值分析程序ansys分別對採用土釘支護的一階邊坡、二階邊坡進行分析,重點是研究各排土釘的軸力分佈規律、開挖方式及原始邊坡形態對土釘的軸力的影響、上下階邊坡在土釘軸力方面的相互作用,得出了有關第一排土釘的設計問題、不同類型的土體應適用於特定的開挖方式、原始開挖出的邊坡形態對一些類型坡體的邊坡土釘支護有較大的影響而對另外一些影響不大、二階邊坡臺階寬度的合理確定、二階開挖及支護比一階時具有較多的工程優點等結論;通過土壓力分析對朗肯、庫侖兩種經典土壓力理論的區別與聯系、坡面傾斜及墻背有摩擦時的坡面豎向應力分佈、面板背土壓力的分佈形態作了研究,得出了邊坡支擋土壓力受坡體內部穩定與坡面局部穩定兩個方面的影響、土釘支護面板背土體中卸荷拱的存在對面板受力有利等結論。The results show that the study on transimittivity can be done using the points along the circle arc centered at the roadway or the boring core, the transimittivity at the joints along the right angle ray can be studied using one single point behind the joint, and the studies on transimittivity can be done on any reasonable radius value of the roadway or boring core in a typical rock
分析結果表明:單節理后各節點透射率的研究,可以通過單節理后某一以巷道或鉆孔中心為中心的圓弧上各節點的透射率來展開;射線角為90的射線上節理后各節點透射率的研究,可以通過節理后某一節點的透射率來展開;單節理的透射率的研究可以在一個固定半徑值的巷道或鉆孔的模型上用一種典型的巖石進行。A curve traced by a point on or connected with a circle as the circle rolls along a fixed straight line
旋轉線,次擺線圓在固定直線上滾動時,圓上一點或與圓相連的一點的弧形軌跡By adjusting the given tangent vector, the parametric rational arc spline also has convexity preserving property and monotonicity preserving property
在實際操作中,通過調整一側端點的切向量,可使上述圓弧樣條曲線保凸,保單調。In parametric interface of this software, there is not only the editor frame of every parameter but also the standard schemes of double circular arc profile and the structural scheme of bevel gear. we can design the gearing according to the schemes efficiently. on the other hand, after clicking corresponding button, we can get the three - dimensional model at once
在參數界面中,不但有各個參數的編輯框,而且還有錐齒輪的結構圖和雙圓弧齒輪的基本齒形圖,這樣可以一邊參照圖形一邊進行設計,從而大大提高了設計效率;另一方面,點擊相應按扭后,可以馬上得到這種雙圓弧弧齒錐齒輪的三維模型。The thesis apply a method of genetic algorithm which is combined with sweden arc method to program to calculate, and regard destroying of beiyin edge slope during freezing - melting eroding as important destroying factors. above two points are the emphases and breakout point
本文在邊坡穩定分析中利用遺傳演算法與瑞典圓弧法相結合,進行編程計算,並且把凍融侵蝕對北引渠道的邊坡破壞作為重要的破壞因素進行分析研究,以上兩點是本文的重點和突破點。分享友人