線性懸測 的英文怎麼說
中文拼音 [xiànxìngxuáncè]
線性懸測
英文
linear extrapolation- 線 : 名詞1 (用絲、棉、金屬等製成的細長的東西) thread; string; wire 2 [數學] (一個點任意移動所構成的...
- 性 : Ⅰ名詞1 (性格) nature; character; disposition 2 (性能; 性質) property; quality 3 (性別) sex ...
- 測 : 動詞1. (測量) survey; fathom; measure 2. (測度; 推測) conjecture; infer
- 線性 : [數學] [物理學] linear; linearity線性代數 linear algebra; 線性方程 linear equation; 線性規劃 line...
-
The main purpose of this paper is to study crack growth rate of a class of nonlinear viscoelastic materials under the condition of constant load and small - strain. in this paper : the new test program is raised by referencing the existing test programs and by our trial and error ; in the new test program, facilities involved in the nonlinear viscoelastic crack tests are relatively few, the test process is relatively simple and the data obtained from the experiments are credible. on this basic, the calculation of j integral of nonlinear viscoelastic double cantilever beams specimens and the parameter of fracture work of corresponding nonlinear viscoelasticity are derived
具體成果包括: 1 、證實了雙懸臂梁試件用於非線性粘彈性裂紋擴展實驗研究的優點:雙懸臂梁試件在實驗中能觀測到的擴展過程持續時間比較長,在計算j積分時,計算方法簡單; 2 、得到了改性聚丙烯材料用於非線性粘彈性裂紋擴展實驗的兩種有效的試件構形和相應的試件尺寸;採用不斷改善夾具的方法使得加載穩定; 3 、經過連續四個多月的時間得到了一組有用的實驗數據; 4 、得到了裂紋長度與時間的關系、裂紋擴展速度與時間的關系、裂紋擴展速度與裂紋長度的關系。A hydrogen and argon ions mixing beam was implanted into the deposited vanadium oxide film. after annealing, vo2 film with tcr ( temperature coefficient of resistance ) as high as 4 % was obtained. the bombardment of ar + could break v - o bond of v2o5 molecule in deposited film and implanted h + resulting in the deoxidization of v2o5, so the vo2 thin film could be prepared by proper control of the dose of ar + / h + implantation
利用離子束增強沉積設備,在ar ~ +離子束對v _ 2o _ 5靶濺射沉積的同時,用氬、氫混合束對沉積膜作高劑量的離子束轟擊,使得被氬離子轟擊后斷鍵的氧化釩分子,再被注入氫降價,然後經適當的退火,成功地制備了熱電阻溫度系數高達4的vo _ 2薄膜(國外報道值為2 - 3 ) ,並研製了單元懸空結構探測器和8 1 , 16 1線性陣列。In this paper, to investigate the coagulation process of inorganic suspended particles ( isp ), online monitoring of the coagulation process was conducted by using pda2000. the process of floe formation and the morphological characteristics of floes were investigated in detail through tv - microscope. the mechanism of partical collision and coagulation kinetics were preliminary discussed
為了考察無機懸浮顆粒體系的混凝過程,研究絮凝體的構造特徵,本文通過pda2000對無機懸浮體系的混凝進行光學在線監測,運用電視顯微攝像儀對絮凝體的形成過程及其形態學特性進行了系統的研究,對膠體顆粒碰撞機制及混凝動力學作了初步探討。In this paper, the fundamentals of cable forces by frequency method are introduced. the curve fitting method is utilized to get the correcting formula of cable forces and frequency through the experiment. on the other hand, a kind of catenary line cable element is introduced in this paper, owing to the inaccuracy caused by correcting struss element in fem
本文還介紹了頻率法測索力的基本原理,並通過試驗,利用曲線擬合法得出索力頻率之間的修正關系式;其次,由於有限元計算中,索元所採用的修正桿元所帶來的不精確性,對于長索其精度更難保證,因此,本文介紹了一種計算精度高、工作量小的懸鏈線索元。Based on the analytic analysis of the linear synchronous motor ’ s layered model, the paper deducted the composing of air gap magnetic fields and the analytic expression of levitating and advancing force. these results provide theoretic guidance not only for the analysis and measurement of the vehicle ’ s air - gap magnetic fields but also for the eatablishment of the
採用各向異性介質近似模擬齒槽區域,並引入定子和轉子等效電流層的概念,建立了直線同步電機的磁場分層模型,在此基礎上得到了氣隙磁場的組成以及懸浮力和推力的解析表達式,為氣隙磁場的分析和測量以及列車運動情況下電磁力軟測量模型的建立提供了理論指導。With analyzed the relation between the particles number in the oil and the contamination of t he oil, the relation between oil contamination and the weakening of transmitted light intensity, the oil contamination is monitored based on the particles scattered the light. the minimum peak value of the oil at low - loss transmission area of quartz optical fiber can be selected to monitor the oil contamination
在對油液中磨損顆粒的含量與油液污染度的關系以及油液污染度與通過油液的光通量的減弱進行分析的基礎上,利用油液中懸浮顆粒對光線的散射的特性,對油液的污染度進行監測,選擇光線在石英光纖低損耗傳輸區域和油液對光線最小吸收峰進行測量。In this thesis, based on mathematic model and real condition, analysis and compare of different control methods are carried out at first. then a propriety control law and optimized parameters are choosen and used into multi - body model in simpack. finally, kinds of dynamic character curves after measurement and calculation are given
論文首先在數學建模的基礎上,根據實際情況,詳細分析對比了直接狀態反饋控制、 pid控制和狀態觀測器控制等常用的磁浮列車懸浮控制方法,然後將合適的控制規律及優化的控制參數用於simpack中的多體模型,通過計算,給出懸浮穩定性、運行平穩性以及列車曲線通過等動力學特性曲線。The dcb ( double cantilever beam ) met hod to test the interlaminar toughness of fabric - reinforced laminates and the modified compliance calibration method ( mcc ) were adopted in this research. the double cantilever beam ( dcb ) test was executed for stitched laminates to evaluate the interlaminar fracture toughness. the stitch parameters ( stitch line spacing and pitch spacing ) were changed and their effects on interlaminar fracture toughness were examined by means of dcb test by using improved insert type loading fixture
試驗中採用改進的插入型夾具、雙懸臂梁dcb ( doublecantileverbeam )試驗方法,測試了載荷?試樣開口位移曲線,依據改進的柔度梁方法( modifiedcompliancecalibrationmethod ( mcc ) )計算出了各個試樣的層間斷裂韌性( r曲線)及層間斷裂韌性的平均值,闡明了縫合工藝參數與層間斷裂韌性( g _ ( ic ) )間的關系,以拉伸與彎曲強度為約束條件,以層間斷裂韌性值為目標優化了縫合工藝。Qualitative and quantitative measurements of disturbances in channel suspensions are carried out using dye emission and piv techniques
然後採用染色線流動顯示技術與粒子圖像測速技術對槽流懸浮流的擾動波特性進行定性和定量觀測。With an introduction of the basic structure of rigid suspension overhead contact system, this paper discusses the basic methods and requirements in construction measure, the converge - wires installation, and the contact wires inlay, as well as the matters needing attention in the whole course of the construction
摘要介紹了剛性懸掛接觸網的基本結構和在施工中的工程測量、匯流排安裝、接觸線鑲入的基本方法和要求,以及工程中的注意事項。According to the design theory of the cable - stayed bridge and to the feature of the cantilever construction the authors propose a construction control method called optimum completion state method ( ocsm ) for rc cable - stayed bridges in the proposed method, the optimum completion state is regarded as the final target of the construction control, and the optimum construction state at each construction stage is taken as the technical route the key of the method is to properly choose or adjust the cable forces the objectives function of optimization is to minimize the elevation error of the girder under the constraint condition that the internal forces ( bending moments ) of the girder are bounded the optimization variables are the cable forces on the basis of the above principles, a optimum model for a construction step is established and cable force adjustments can be found for each construction step in this model, the creep and shrinkage effects of concrete have been considered a bridge example is given which shows that the final state of the bridge is very close to the design aim and that this method is much better than the so - called double - control method the example is a good illustration of the soundness and practical value of the proposed method
根據現代斜拉橋結構設計理論和懸臂施工方法的特點,提出了以最佳成橋狀態作為施工控制的最終目標,以實施最佳施工階段為技術路線,以索力調整為核心內容的斜拉橋施工控制理論,簡稱為最佳成橋狀態法;以斜拉橋主梁標高誤差最小為目標函數,以主梁內力(彎矩)為約束條件,以索力為優化變量,建立了最佳施工階段的索力調整計算模型;推導了考慮徐變收縮效應的索力調整計算公式;用最佳成橋狀態法對一實橋工程進行了施工控制全過程計算研究,得到的成橋狀態與設計目標相當接近,優于該橋以「雙控」為控制目標的實測結果,有力地證明了本文方法的正確性及其工程實際價值The results showed that the accuracy and the repeatability for online concentration acquisition could not be assured with this approach even though the obtained electroconductivity curves were essentially consistent with those of hlozny ' s, because the electrode constant will be changed in the crystallization operation
但由於懸浮晶粒及其在強流體場作用下對測試電極產生的沖刷破壞作用,致使電極常數改變,影響測定結果的準確性和重現性,難于實現濃度的在線測定。The simulation data of the flexible projecting beam with different crack flaw is different. so we can build bp neutral - work to identify the position and the length of the crack in the flexible projecting beam by the simulation data. the input vector of bp neutral - work is the simulation data becomes, the training object is the position and the length of the mapping crack
Bp神經網路是一種多層的前饋型人工神經網路,可實現從輸入到輸出的任意非線性映射,所以選取bp神經網路可以有效地實現從觀測信號到裂縫所處位置以及裂縫長度的非先行映射,以達到對柔性懸臂樑上裂縫缺陷的智能診斷。Abstract : in this paper, a new simple method is put forward to on - line survey and analyse the real - time response of bridges loaded under random vehicles and people. based on linear elastic hypothesis and finite element method, the dynamic whole displacement state and load of the bridge can be obtained through surveying partial displacements, so the problem that load is unknown and difficult to determine when calculating is solved in a sense. this method is adap ted to girder bridge, arch bridge, cable - stayed bridge and suspension bridge. through the instrumentality of ways and means in this treatise, a real - time system to survey and analyse a working bridge can be established
文摘:在線彈性假設基礎上,根據有限元理論和橋梁隨機車輛(行人)荷載的特點,討論並提出了一種通過監測部分位移,計算橋梁其餘位移和橋面荷載的簡化分析方法,解決了橋梁在隨機車輛(行人)荷載作用下的荷載確定問題,建立了動位移和等效節點荷載的有限元列式.該方法為橋梁結構的在線監測和實時分析提供了理論基礎,適用於連續梁橋、拱橋、斜拉橋和懸索橋等橋梁結構形式,具有實際應用價值We have completed the earlier stage research on theory analysis, fabricated the grin sphere lenses using two kind of monomer selected by suspension diffusion copolymerization method, measured their refractive index distribution curve and other optical parameters of them, and evaluated imaging quality on the basis of their distribution curve
本工作對此種透鏡的光學性能進行理論分析,選擇兩種適當聚合物單體利用懸浮擴散共聚的方法加工制備此類微球透鏡,測量所得透鏡的折射率分佈曲線和其它光學參數,並對此種梯度折射率微球透鏡的成像特性進行了評價。Abstract : to campare the result of vehicle static parameters test with that of car dynamics test, analyze the influence of the vehicle geometry parameters and suspension parameters to the runnig stability of railway vehicle on the straight line
文摘:通過車輛靜態參數測試結果與動力學試驗結果進行比較,分析研究車輛幾何參數與懸掛參數對列車直線段運行穩定性的影響。Force exterted on the pipe is measured by an lvdt supported as a cantilever
支撐在懸臂樑上的線性可變差動變壓器( lvdt )可以用來測量施加在管上的力量。Firstly, based on the basic theory of grin optics the optical effects of the spherical symmetry grin micro - sphere lens were analyzed systematically. then two suitable monomers were selected to fabricate grin micro - sphere lens by suspension - diffusion - copolymerization method. finally, the refractive index distribution curve and other optic parameters of the micro - lens were measured
本工作從梯度折射率介質光學的基本理論出發對球對稱grin微球透鏡的光學性能進行了系統分析;選擇兩種適當單體,採用懸浮擴散共聚法制備出聚合物梯度折射率微球透鏡;測量所得透鏡的折射率分佈曲線和其他光學參數。On the basis of analyzing the result of the test, we have improved the structure of the damper and revised the systematic model. we have experiments on the damper to test its damping performance. comparing with the simulation force - displacement curves, we gave an explanation of why the factual force - displacement have aberrances, which gave warrants to the parameter design and structure ' s improvement. we found the state equation of the semi - active suspension on the semi - active adaptive control strategy and use computer simulations to compare the passive suspension structure and er semi - active suspension. computer simulations indicate that er semi - active suspension have greatly improved driving smoothing and control stability. at the same time semi - active suspension is of simple structure and low cost. so in the long run, the semi - active suspensions may have wider application
在對試驗結構進行分析的基礎上,改進了減振器的結構,修正了系統的模型;對自適應減振器性能進行了大量的測試,通過與模擬結果比較,分析了造成示功曲線局部畸變的原因,為機構及其參數設計以及改進提供了依據;基於振動半主動自適應控制策略,建立了半主動懸架系統的狀態方程,並且進行了模擬,從而得出與被動懸架結構相比,採用電流變流體減振器的半主動懸架在汽車行駛平順性和操縱穩定性上均有較大的改善,性能大為提高。In this paper, aimed at the characteristic of sensor acting force, a kind of calibration is proposed using cantilever. the cantilever and calibration device are designed, a linear calibration method is introduced. then the calibration experiment is performed, and the calibration matrix is solved
針對傳感器測量力極小的特點,採取了利用懸臂梁加載、顯微視覺測量的微力間接標定法進行傳感器標定,設計了懸臂梁、標定裝置,採用線性解耦方法,進行了標定實驗,求解出標定矩陣,對傳感器的靜態性能進行了測試。分享友人