簡化型變換 的英文怎麼說
中文拼音 [jiǎnhuàxíngbiànhuàn]
簡化型變換
英文
reduced form transformation-
With the help of the electronic computers, engineers employ it to figure out nearly all kinds of engineering problems ranging from astronavigation, construction, waterpower projects, ship - building and mechanical engineering etc. owing to the strong power of finite element method, one kind of software pack which based on the method is exploited and named algor feas to resolve problems on structure analysis for trusses and shells. this paper also employ algor feas software pack to analyze and compute the cableway towers, giving the accurate result on stress and displacement both in location and whole. finally, we also bring out some advice on structure improving
在此分析過程中：首先將物理模型簡化為力學模型，主要是將塔架結構按空間桿單元簡化為空間桁架結構，目的是將力學模型變換為數學模型；這一過程主要是利用autocad2000建立塔架的計算模型；再者，利用algorfeas軟體包讀入autocad建立的塔架計算模型生成初始數據卡利用計算機進行編程進行風載計算，再將計算結論整合入algorfeas產生的初始數據卡中，生成計算數據卡；接著，利用algorfeas軟體包計算塔架在不同載荷情況下的應力圖，位移圖，並且求出在不同載荷條件下的最大位移和最大應力等；然後，對塔架的穩定性進行分析；最後；根據計算結果提出改進建議。Then we use shuowenjiezi as well as the three standard books of chinese characters in tang dynasty, ganluzishu, wujingwenzi, jiujingziyang, as the criterion to correct the wrongly written characters, and divide the compiled common chinese words into seven categories : simplify the font, complicate the font, change the strokes, change the goujian, alternate the yifu or yinfu, alter the structure and kuaihuacaoshu. on the basis of that, we illustrate with the quantified data connected with the specifically speaking method that in the seven categories only two categories which are alter the yifu or yinfu and alter the structure maintain the reason of the standard form of chinese characters, the category of complicate the font weaken the reason, and the other four categories destroy the reason. through this, we can see that the reason of the common chinese words is much weaker than that of the standard form of chinese characters, so the common words are mostly excluded by the standard form system and are gradually obsoleted
本文以《吐魯番出土文書》為材料，採用窮盡式的方法輯錄其中的俗字（以字種數計） ，以《說文解字》以及《干祿字書》 、 《五經文字》 、 《九經字樣》三種唐代正字書作為正字標準，將所輯錄的俗字分為簡化字形、繁化字形、改換筆畫、改換構件、更替意音、變換結構、楷化草書七種類型，並進一步以量化數據和具體分析相結合的方法說明七類俗字中保持正字理據的僅更替意音、變換結構兩類，繁化字形類弱化了正字理據性，其他四類則破壞了正字的理據，說明俗字的理據性要比正字弱的多，因而俗字多被正字系統所排斥，逐漸被淘汰。Performance for a piezoresistive transducer pressure sensor to thermal and pressure environments can be predicted by finite element method. a simplified 1 / 8 model, considering silicon dioxide and nitride process as well as stack anodic bonding and adhesive bonding processes, was developed. the fem results were found to be comparable to experimental data. case studies suggested that pyrex stack induces certain amount of non - linearity, while it isolates hard epoxy nonlinear effect. flexible epoxy bonding or soft adhesive bonding is preferred to the packaging process. the viscoelasticity and viscoplasticity of bonding material will result in hysteresis and drift errors to sensor output. however, soft adhesive s influence on sensor can be ignored under relative stable environments. more over, detailed design and process information will help to improve modeling application
熱、壓環境下壓阻變換壓力傳感器的性能可以通過有限元方法預測.這里研究了簡化的1 / 8模型，模型考慮了二氧化硅和氮化硅生成過程及堆陽極鍵合和膠粘結合過程.結果發現有限元預測結果和實驗數據具有可比性.範例研究表明，硼硅堆導致產生一定的非線性，但它隔離了硬環氧樹脂的非線性.在包裝過程中最好使用柔性環氧黏合或軟黏膠性結合.黏合材料的黏彈性和黏塑性將會導致傳感器輸出的滯后和漂移誤差.然而，在相對穩定的環境下，軟黏合劑對傳感器的影響可以忽略.此外，詳細的設計和過程信息有助於提高模型的適用性It is shown by structural seismic response of four wavelets that littlewood - paley wavelet is not suitable for structural seismic response, because structural response is too small, meyer wavelet is a better wavelet for structural seismic response, for it ' s structural response is agreement with the finite element method, and also harmonic wavelet, structural response under earthquake is a little bigger than finite element method, structural response under odd exponent wavelet is also bigger than finite element method, this method is very simple by wavelet transform, wavelet transform method is different from old methods, one is with which not only knows the effects of earthquake wave detail frequency - band on structural response, but also considers earthquake wave ' s non - stationary of frequency and time - domain value, another is the second mode shape and higher mode shape response that do n ' t attenuate so fast
通過對這四種小波的結構地震反應分析研究說明： littlewood ? paley小波不適合於用來作結構地震反應分析，因為在littlewood ? paley小波下的結構地震反應太小，不符合實際情況；用meyer小波作結構地震反應分析比較合適，和有限元法的結果比較接近；也可以用諧波小波來作結構地震反應分析，只是在諧波小波下的結果略為偏大；單邊指數小波下的結構地震反應分析比有限元法稍大一點，它通過小波變換大大簡化了結構地震反應分析。用小波變換方法來進行結構地震反應分析和以往方法不同的是：它不僅可以知道地震波的具體頻率段對結構反應的影響，而且同時考慮了地震波的幅值非平穩性以及頻率非平穩性；另外與以前方法得到的結果有差異的是，第二振型及以後的高一點的振型的反應沒有以前的方法衰減得快。The result of the calculation for tip clearance is reasonable when it is compared with theory. two ways are put forward for convention of dimension of the turbine components from high temperature to low one, which is related with tip clearance, a simple example is used to illuminate that the two ways are useful, using the method of design optimization, axiisk and a blade of a certain turhine is analysed, it showes that the method of design optimization is feasible to be used for convertion of dimension of the turbine components. finally, ansys software is used to analyzed the variation of tip clearance with the method of cyclic symmetry analysis when engine works under the conditions of temperature and rotational speed, am using a new method to deal with thermal contact resistance in the calculation
本文完善了計算渦輪葉尖間隙的簡化演算法程序，增加了程序的計算功能，並將其應用於某高壓渦輪進行葉尖間隙分析，所得結果與理論結果進行了對比，得出修改後的程序用於葉尖間隙計算是合理的；同時提出了與葉尖間隙相關的渦輪典型部件的冷、熱態的尺寸兩種換算方法，使用優化設計的方法進行了實例分析，說明了所提出的計算方法是可行的；最後應用ansys有限元軟體利用循環對稱的方法分析了某型發動機高壓渦輪在溫度場及離心力作用下的葉尖間隙在發動機工作過程中變化情況，並分析了計算中的接觸熱阻的處理問題。( 5 ) discuss some mathematical models of the pollutant transport problems in some local river flow fields. by integral transform method, the paper establishes the usual finite difference approximation scheme to solve the numerical solutions and gives examples for the computation of the approximating solutions, moreover, discusses one - dimensional characteristic finite difference method for a convection - diffusion equation under usual conditions
（ 5 ）針對水域中污染物輸移問題的數學模型，通過積分變換法，得到了簡化模型在理想化條件下的近似精確解，同時給出數值算例，並且對非理想化條件下模型的特徵差分方法進行了討論。On the basis of relative researches in the world, according to the study status of steel - concrete composite slab, which would be widely used in modern bridge, modified equivalent inflexibility of steel - concrete composite slab was deduced by use of conversion section principle in this paper ; based in this, this paper put forwards the theory of ultimate flexural capacity of steel - concrete composite slab in consideration of slip effect, and introduces the practical simplified method for calculating flexural deformation of steel - concrete composite slab in consideration of the effect of steel studs and welded wire, and conclude that the methods in this paper is veracious and reliable, comparing with the traditional calculating mode ; morever, this paper put forwards the calculating theory and program of the effect analysis of creep and shrinkage to steel - concrete composite slab, using conversion elastic modulus principle, and testifies that the theory is right and the program is reliable and practical
本文在國內外研究成果的基礎上，針對壓型鋼板與混凝土組合板結構在現代橋梁建設中廣泛應用前景和研究現狀，利用換算截面法導出了壓型鋼板與混凝土組合板結構的修正等效慣性矩；在此基礎上，又推出了考慮壓型鋼板與混凝土之間的相對粘結滑移影響的壓型鋼板與混凝土組合板結構極限抗彎承載能力計算理論，並介紹了考慮栓釘、聯結件影響的壓型鋼板與混凝土組合板結構簡化實用撓曲變形計算公式，而且通過與傳統計算理論的分析比較，表明本文提出的計算理論公式的準確可靠性；此外，採用換算彈性模量比法著重提出了壓型鋼板與混凝土組合板結構的徐變、收縮效應分析的計算理論和程序，並通過實例分析計算證明了理論的正確性、程序的可靠性和實用性。The solution formula of dwell time is deduced by using the pulse iteration method and the smoothing fourier transition method, and the formula can be simplified referring to workpiece shape. according to the anastomotic status of the tool and workpiece surface, we present the new model of the inherent relation among local pressure density, removal rate, convergence ratio and residual errors, and the corresponding formulas are given. the forming cause of the edge effect in the polishing process is analyzed, and the means which reduces the edge effect is put forward
2 、針對計算機控制光學表面成形（ ccos ）的加工方式、誤差收斂特點，研製了去除函數呈高斯分佈的雙轉子結構研拋模；採用脈沖迭代法、平滑因子傅立葉變換法推導出駐留時間的演算法，求解過程中根據工件面形的特點作了各種形式的簡化；提出了工件表面和研拋模的吻合誤差與局部壓強、材料去除率、收斂比之間內在關系的數學模型，並推導出相應的計算公式；分析了邊緣效應產生的原因，在加工過程中採用相對壓力因子對去除函數進行修正，可以消除邊緣效應的影響。With the consideration of the vertical wave effect of soil and soil - pile interaction, an approximate analytical solution to vertical vibration of pile system with variable impedance in visco - elastic layered soil is developed. a simplified and practical mathematical model for interaction between soil layers is proposed, and its applicability is theoretically investigated. based on this model and by using laplace transforms and the transmit property of impedance function, the analytical expression of the impedance function and solutions of the displacement and velocity response function in frequency domain and in time domain at the pile head are derived
4 、從三維軸對稱土模型出發，對考慮樁土耦合作用、土層層間聯系以及樁周土豎向應力梯度變化條件下的成層粘彈性土中完整樁及變阻抗樁系統縱向振動問題進行了研究，提出了成層土中變阻抗樁系統縱向振動問題的近似解析解法和樁周土層層間相互作用的簡化而實用的數學模型，並利用拉氏變換和阻抗函數的傳遞性，獲得了成層土中任意段變阻抗樁樁頂阻抗函數的解析表達式，以及樁頂速度導納和時域速度響應解析解和半解析解。Then on the basis of those, a model of software radio receiver is given. operations are determined using hardware whose configuration is under software control. finally, the circuits are realized with simulation in order to prove the discussed schemes
然後建立了軟體無線電接收機的數學模型，盡可能的簡化射頻模擬前端，將模數數模變換器盡量靠近天線，在對信號充分數字化的基礎上依靠軟體來定義無線電的各項功能。A simple method of solving an orthogonal transformation with a primary transformation is presented by change quadric form into canonical form
給出了利用初等變換求一個正交變換化實二次型為標準形的簡便方法。Abstract : a simple method of solving an orthogonal transformation with a primary transformation is presented by change quadric form into canonical form
文摘:給出了利用初等變換求一個正交變換化實二次型為標準形的簡便方法。Abstract : a noise model for the analog correlator used in the ultra wideband receivers is proposed due to lack of simulation capability on noise performance of the correlator in current eda tools. the analog correlator circuit is divided into several parts to calculate the equivalent noise sources respectively. the ideal impulse generators, instead of the noise sources, are then applied to obtain the time varying transfer functions. fourier transforms are carried out to explore the relationship between the noise input and output in frequency domain for each part. then the symmetrical noise sources are grouped together and the periodicity of the circuit is utilized to further simplify the model. this model can be used to evaluate noise performance of the correlator
文摘:給出了分析模擬相關器的噪聲模型.將相關器分成不同的幾個子模塊后，對各模塊分別計算等效噪聲源.然後用理想脈沖源代替噪聲源計算電路的時變傳輸函數，接著用傅里葉變換計算輸入輸出的頻域關系.利用電路的對稱結構合併對稱的子模塊可以進一步簡化模型.該模型可以用來估計相關器的噪聲性能Since piles are set into a composite foundation under an embankment it can not be directly analyzed in the plane strain way. to compute its settlement, a representative segment method is developed and used in settlement analysis of composite foundation under embankment. compared with the traditional plane strain method that needs to unreasonably suppose piles as walls, the representative segment method is more reasonable
根據樁側摩阻力的解析解，給出了加固區壓縮量的簡化演算法；採用典型段法對復合地基沉降影響因素進行了三維有限元分析，避免了平面應變分析方法中對復合地基中樁體的不合理換算，以使計算模型在力學概念上更合理。The thesis presents a group of direct ac / ac topologies including single and three phases ac / ac converters which are based on simple dc - dc topologies and realized by using the single - power tube four - quadrant switches. with only two power switches, these single or three phases ac / ac converters can achieve high quality four - quadrant ac / ac conversion by simple configurations and simple control schemes. the thesis mainly researches on the single phase ac / ac converter in the topologies including ac _ buck and ac _ cuk
本文介紹了基於直流buck 、 boost和cuk電路，採用單有源四象限開關實現功率雙向化的直接ac / ac變換拓撲族，該拓撲族中的單、三相變換電路均只使用兩個功率開關，可實現波形優良的同頻ac / ac四象限變換，具有電路結構簡單、控制簡便、可實現小型化等優點。But in the paper, there are two directly inputting variables that they are ed and fd, and the ed is calculated by ld and rd, where the ld, rd and fd denote the distance that are measured by range sensors on a car between the left, right, front obstacle and the car, then they will be translated into controlling variable u by the function of fuzzy controller, and then the car will move basing on the controlling variable u
在常規的模糊控制中採用變量和變量變化以及變化率作為輸入的多維模型。本文採用所檢測到的三個距離即ld 、 rd 、 fd經過簡單變換為ed 、 fd ，再以這兩個變量直接作為輸入，經模糊控制器的作用，輸出控制量u ，小車就按照該控制量的控制來實現運動。The main work and achievements are summarized as follows : according to the spectrum analysis theory, the simple formula of the power spectrum between the excitation and the response is obtained. then the time - domain statistical properties of the structural response are acquired through fourier inverse transform, and cauchy ' s residue theorem is applied to solving the integral of fourier inverse transform, the structural dynamic reliability is calculated in terms of possion hypothesis based on first passage failure
主要研究內容如下：從譜分析理論出發，得到了激勵與響應功率譜之間的簡明關系式，由fourier逆變換得到響應的時域特徵，利用cauchy留數理論處理fourier逆變換的積分式，基於首超破壞的possion假設計算結構系統的動力可靠性，並在此基礎上進行結構優化設計，奠定了確定性模型的基礎。The influence of soil on the pile was simulated by voigt model according to the layered characteristic of soil surrounding the pile. the semi - analytical solution for the relationship between the pile head settlement and time was obtained by laplace transform method and fourier inverse method. by using the solution, the influence of all relevant parameters on the pile settlement behavior was investigated and discussed
成層廣義voigt體地基中單樁沉降的時間效應研究將成層地基中每一層土對樁的作用簡化為廣義voigt體模型，由此建立了單樁的靜力平衡方程，並求解得到了成層地基中靜荷載下單樁樁頂沉降在拉普拉斯變換域的解析解和在時間域的半解析解。This structure is kind of outer - coalescent. it adopts neural network ' s clustering function to classify the system output, then link a fuzzy controller in form of series which rules are made through the classified result. the design process and the experiment shows the well control effort to the full - bridge series type resonant dc - dc converter, at the same time the whole process avoids not only the modulating parameter process of the traditional method, but also the complexity of the traditional fnn design
然後本文又對全橋式串聯共振型dc - dc變換器的主電路的狀態方程進行了理論上的推導，從而確定了這種全橋式dc - dc變換器的各種工作模式；然後通過分別對模糊控制和神經網路進行介紹，提出了一種新型的模糊神經網路控制器模型，該控制器模型是一種外接式結合? ?串聯式結合方式，它利用了神經網路的聚類功能，採用了一種再生式神經網路，即elman網路來對系統輸出進行分類，然後根據分類結果設計模糊控制器，這樣就簡化了整個模糊神經網路控制器的設計過程。After the topological structure of machine system and the method of conversion of coordinate are introduced, 3d model of the manipulator had been set up in pro / e. in the process, several problems had been solved, such as simplification of part model, assembly, idealization of rub disc movement decomposition organization
在介紹了軟體中機械繫統的拓撲結構和坐標變換的方法后，在pro e中建立了機械手的3d模型；解決了模型建立過程中的零件模型的簡化、零件的裝配、摩擦圓盤機構的理想化、模型中電動機的轉動方向等問題。分享友人