進速比 的英文怎麼說
中文拼音 [jìnsùbǐ]
進速比
英文
advance ratio-
A highly efficient numerical algorithm by using multi - grid method ( mgm ) is introduced to solve the three dimensional field distribution in the present paper. formulae of the restriction and prolongation in mgm computation is deduced, and a 3d program of mgm is accomplished, which can solve the field distributions in electron optical systems for various electrostatic lenses. the 3d field distribution in an electrostatic concentric spherical model is tested with mgm algorithm and an algorithm based on finite difference method ( fdm ) respectively. comparing these two results in view of computational efficiency and computational accuracy, it appears that mgm is superior to fdm in solving electrostatic field distribution for the electron optics problem. this paper shows that the 3d field computation using mgm greatly improves the computational efficiency of field distributions in electron optical systems and shortens the computational time
本文將一種高效率的數值計算方法? ?多重網格法引入三維靜電場分佈的計算，多重網格法利用限制和延拓可迅速求得滿足精度要求的場分佈.研究了求解各種靜電透鏡電子光學系統三維場分佈的多重網格法程序，驗算了靜電同心球模型的三維場分佈.通過與目前在場計算中常用的有限差分法進行比較，可以看出多重網格法的計算效率和計算精度優于有限差分法.本文表明利用多重網格法計算三維場大大提高了場分佈的計算效率，縮短了計算時間，因此為后續計算打下了良好的基礎Abstract : by means of the comparison and analysis to applications of convertional starter and frequency conversion governor inmine exhauster, a useful and practicable electricity - saving pathof exhaust system was found out, so improving systematic saving operation
摘要：通過對傳統起動器和變頻調速器在礦井抽風機的應用進行比較分析，找出一種抽風系統有效、可行的節電途徑，以實現通風系統的經濟運行。The s - l - e experiment data for the eight binary condensed systems of fatty alcohol / fatty acid were treated by using the improved equation, and the equation was examined with experimental data. at the same time, we used ideal model to predict the tenary s - l - e of n - octadecane / lauric acid / stearic acid system, and we got an accurate result of the simple eutectic temperature. the relative error is 0. 51 % comparing with the experimental result, so we will offer a method of prediction for quickly obtaining multicomponent system phase change materials this article calculated the pcms quantities and energy saving effect in theory, designed the experimental apparatus to measure the energy saving effect, and analyzed the temperature equalization action of the pcms by comparing experiment
利用這種方法，建立了適合醇-羧酸等系列二元體系的單參數margules方程，本文對醇-羧酸系列等8個二元凝聚體系的單參數margules方程的參數進行回歸，並利用整個實驗數據對模型進行了檢驗，另外，本文利用理想狀態模型對一個三元體系18烷-月桂酸-硬酯酸相圖進行預測，通過與實驗數據進行比較，預測的低共熔溫度與實驗測定溫度較為吻合，其相對誤差為0 . 51 ，這將為快速獲取多元體系的相變材料提供預測方法。Procreant knowledge expression and forward inference engine are adopted in the method of fault diagnosis based on expert system theory. in the fault diagnosis applying neural network theory, six kinds of improved arithmetic of back - propagation arithmetic, including gradient descent with momentum, variable learning rate back - propagation, resilient back - propagation, quasi - newton, levenberg - marquardt and conjugate gradient, are applied to diagnose the faults of electric load manage center and solid state power controller. different diagnostic results gotten by simulation are compared at last
在基於專家系統的故障診斷方法中，採用了產生式知識表達和正向推理機制；在基於神經網路的故障診斷方法中，則分別採用了bp神經網路的附加動量法、自適應學習速率、彈性bp演算法、擬牛頓法、共軛梯度法和levenberg - marquardt法對電氣負載管理中心和固態功率控制器的故障進行診斷，並對由模擬得到的不同診斷結果進行比較。In different in terne die travel, the metal flow characterize in warm extrusion forming processes and the affection for the flow of metal stage which made by the difference between the blank bottom altitude and the axial direction limiting size in warm extrusion forming technique have been analysed we have gotten the equivalent strain field and the velocity field and other field variable that the blank in different in terne die travel and the die travel - load curve. at the same time, we have analyzed the contributing factor for the oil pump stator forming process optimized and achieve thereasonable die parameter for the war m extrusion forming finally, the optimized technics parameters were used into pilot production, then the qualified oil pump stator forging were produced, the analog results were compared with those of pilot production
論文具體分析研究了不同成形工藝過程中金屬流動的特點，並對不同凸模行程下溫擠成形過程中的金屬流動特點、坯料連皮厚度（底部高度）與溫擠壓成形工藝中的軸向界限尺寸的差值對金屬變形階段的影響進行了分析，獲得了坯料在不同凸模行程下的等效應變場、速度場等場變量及凸模行程-載荷曲線，同時對油泵定子成形過程的影響因素等進行了分析，優化並獲得了合理的溫擠成形工藝及模具參數。最後，利用模擬優化獲得的各項工藝參數進行生產實驗，得到實際生產出的合格油泵定子件，並將模擬結果與生產實驗結果進行比較。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。Instruction detection technology is core in instruction detection system, it include abnormity instruction and abused instruction detection, on the basis of traditional network security model, ppdr model, instruction detection principle and instruction technology analysis, the author has brought forward instruction detection method based genetic neural networks, adopted genetic algometry and bp neural networks union method, and applied in instruction detection system, solve traditional bp algometry lie in absence about constringency rate slowly and immersion minim value
入侵檢測分析技術是入侵檢測系統的核心，主要分為異常入侵檢測和誤用入侵檢測。作者在對傳統網路安全模型、 ppdr模型、入侵檢測原理以及常用入侵檢測技術進行比較分析的基礎上，提出了一個基於遺傳神經網路的入侵檢測方法，採用遺傳演算法和bp神經網路相結合的方法?遺傳神經網路應用於入侵檢測系統中，解決了傳統的bp演算法的收斂速度慢、易陷入局部最小點的問題。The discussion of main parallel technologies on construction of parallel sliq algorithm is presented in this paper. the computing result of algorithm complexity of sequential and parallel algorithm indicates : when the data set is large enough, as to continuous attributes, the parallel algorithm almost get speedup value equal to the number of processors ， while as to categorical attribute the improvement of parallel algorithm is limited
通過對串列和并行演算法時間復雜度的計算表明，當數據集充分大時，由於連續屬性的排序計算操作分散到各個處理機單元上進行，顯著降低了計算時間，從而可以得到近似於處理機個數的加速比，對于離散屬性，本并行演算法對串列演算法的性能提高有限To decimators of multi - level system designed based on the hb filter and cic filter, analysis of the filter design parameters involved, whose theory applied to multi - level cic filter of design, and designed half band filter with distributed algorithms. compared to the simulation results. these advanced algorithms applications, and further increase hardware efficiency and operating speed
對于基於積分梳狀（ cic ）濾波器和半帶（ hb ）濾波器的多級系統設計的抽取濾波器組，分析了濾波器設計中所涉及的各個參數，將剪除理論應用於多級積分梳狀（ cic ）濾波器的設計中，並且採用分散式演算法（ da ）來設計半帶（ hb ）濾波器，並對模擬結果進行比較，這些先進演算法的應用，進一步提高了硬體效率和運行速度。Based on the basic analysis of the structure and power elements of the hybrid vehicle, this thesis presents a powertrain system with a metal pushing belt cvt, aiming to the development status and trend of the hybrid vehicle technology in our country. a rational control strategy and its work mode of this powertrain system are determined, and correlative parameters such as the engine power, the starting torque, and the differential ratio, the rated power and torque of the motor, and the ratio of the torque synthesizer are systematically designed for the changan star 6350b. at the same time, the design of these parameters is considered as the base of the simulation of the motor control system in next step
在對混合動力汽車的結構型式和動力元件進行基礎性理論分析后，針對我國汽車技術發展現狀和混合動力汽車技術的發展趨勢，設計了一種基於金屬帶式無級自動變速器cvt混合動力汽車動力傳動系統方案，根據該傳動系統方案制定了比較合理的控制策略和工作模式，並針對長安之星6350b設計了發動機功率和起始轉矩、主減速比、電機的額定功率和轉矩、轉矩合成器速比等相關參數，為下一步的電機控制系統模擬實驗打下基礎。Besides, the growth of gasb expitaxy film was monitored by reflection high energy electron diffraction ( rheed ). the rheed images and intesity oscillation are collected by computer system. it showed that the gasb film prepared in 400 was amorphous and it became monocrystalline when the temperature rose to 500. atomic force microscope ( afm ) was applied to analyse the surface morphology of the films which were grown in diffrent growth rates or substrate temperature. the analysis were compared to simulation results. the experiment results indicated it was easy to form clusters when the rate of growth is high or
此外，本文通過反射式高能電子衍射（ rheed ）監測了gasb外延薄膜的生長，利用rheed強度振蕩的計算機採集系統實現了rheed圖像和rheed強度振蕩的實時監測。實驗發現在400生長的gasb薄膜為非晶態，溫度升高到500薄膜轉變為單晶。利用原子力顯微鏡對不同生長速率和襯底溫度生長的gasb薄膜的表面形貌進行觀察分析，並與模擬結果進行比較。In this paper, the drive theory of the large ratio friction transmission is studied ; a new type elliptical cam wave generator is designed ; the large ratio friction transmission prototype is designed and manufactured ; based on the ansys finite element method software, structure of the elliptical cam is analyzed ; precision index of the manufactured large ratio friction transmission prototype, such as transmission accuracy, least step, stability of the least step, load capacity is measured by the absolute rotary encoder. by analyzing the measurement data and research content, it is think that the new elliptical cam wave generator could overcome a good many problems brought by processing errors, facilitate size precision adjustments, input moment can be achieved in the form of a pure force couple importing ; through this study, " the large ratio friction transmission prototype " could apply in practical engineering basically
本文研究了大速比摩擦傳動的傳動理論;設計了新型橢圓凸輪波發生器，設計製作了大速比摩擦傳動樣機;用軟體ansys對所設計的橢圓凸輪結構進行了有限元分析;用19位絕對式編碼器測試了大速比摩擦傳動機構的傳動精度、最小步距、最小步距的穩定性以及帶負載能力等各項精度指標;對測量數據和研究內容進行了歸納和整理，認為新型橢圓凸輪波發生器克服了加工誤差帶來的諸多問題，新型橢圓凸輪波發生器可以進行尺寸精度調整，能夠達到輸入力矩以純力偶的形式輸入;通過本項研究，基本可以使「大速比摩擦傳動機構」在工程中得以應用。An analytical discussion was carried out upon the transmission scheme, assembly condition, eccentricity condition and uniform loading of k - h kind and ngw modeled gear mechanism, and some important conclusions were reached that this kind of mechanism possesses rather large speed increasing ratio, comparatively good uniform loading and dynamic equilibrium, thus provided necessary theoretical bases for the development and application of this mechanism
摘要對k - h類ngw型齒輪機構的傳動方案、裝配條件、偏心距條件及均載進行了分析討論，得出了這種機構具有較大的增速比及較好的均載、動平衡等重要結論，為這一機構的開發應用提供了必要的理論依據。Using flyer velocity gained from energy characterizing method, definite parameters of flyer and explosive, deterministic parameters of initiation system critical initiation energy to flyer of explosive can be theoretically calculated. associating with critical initiation voltage of explosive experiment measuring comparisons and evaluations can be conducted for flyer sensitivity of explosive
利用能量損失法求出的飛片速度以及已知的飛片參數、炸藥參數、起爆系統中的既定參數，可以對炸藥的飛片臨界起爆能量進行理論上的計算，結合實驗測量的炸藥臨界起爆電壓值，可以對炸藥的飛片感度進行比較和評價。Aimed at design index of input power 1. 5kw, most output rotate velocity 300rpm, and rating output rotate velocity 150rpm, considering factors of angle and ratio of transmission, on the basis of kinematics simulation, author optimized the kinematics parameters. in this paper, author has made some analysis and study to the primal assembly condition of transformer ' s sequential action in theory, designed structure dimension of the input and output transformer, and verified the corresponding strengthen. further, the structure, which is to key transmission components of velocity control system of the speed regulator, has been designed based on meeting operational sensitivity, precision and self - locking
本文針對輸入功率為1 . 5kw ，最大輸出轉速，額定輸出轉速的無級變速器的設計要求，並考慮到傳動角及變速比等因素，在運動學模擬的基礎上，對運動學參數進行了優化；本文對變換器連續作用的初始裝配條件進行了理論分析與研究，對輸入、輸出變換器作了結構尺寸的設計，並進行了強度校核計算；本文還對變速器調速系統中主要傳動構件在滿足操作的靈敏度、精度、自鎖性的基礎上進行了結構設計；最後採用workingmodel3d軟體，進行虛擬樣機的計算機輔助模擬設計及運動學和動力學計算。The study has completed the design of two - phase inverter and made up of the two - phase inverter - motor system for experimental use it is a variable frequency adjustable speed system with a open - loop control of rotational speed, which consists of voltage - controlled oscillator circulating assign device inverter circuit and two - phase induction motor a accurate mathematical model is set based on the whole system, and simulator program of dynamic and steady condition is established, which is used to calculate the dynamic and steady performance by kron and symmetrical coordinate converter by simulator calculation and experimental research with specific parameter of the system, a comparison is made between predicted and experimental characteristics, experimental measurements are shown to compare closely with corresponding theoretical result it is compared with some variable frequency adjus table speed system comprising inverter and single - phase induction motor from the system efficiency torque pulsation and the effect of two - phase inverter capacitance based on the conclusion, harmonic cancellation pulse width modulation control of a two - phase inverter - fed induction - motor drive system is researched, which cancelled the low harmonic and improve the system performance
通過對電機的kron變換和對稱分量變換，建立了系統較精確的數學模型，編制了系統動態及穩態運行的模擬計算程序分別計算系統的動態和穩態性能。通過對系統的具體參數進行了模擬運算和實驗研究，實驗和模擬結果進行比較，說明實驗和理論較為一致，並從系統效率、轉矩脈動及兩相逆變器電容的影響等方面與各種逆變器和單相異步電動機組成的變頻調速系統加以比較。在此基礎上，對兩相逆變器供電-異步電動機系統使用諧波抑制pwm控制進行了研究，由於減少了低次諧波，改善了系統性能。Cot1s i deri ng that t he exte ] - ioi - in t el - ference mai n1 y comes from t 11e sea fl o v l11elj i t i s un ( lel ' - i1 t el ", thi s nfr ) j { j1t i ; fi + lk, 7 : f } itft, ? } { t ! : i / cx pal7er veri fj ed t he st i ~ ol1g 1 ~ oi ) ust ness of th is fuxzy va1 - iilb1 e st l ' uctul ' c control method against the mode1 uncertainties and external disturhances, such as the variat ions of the sea current i s sdeed and direct ion, ancl it a1 so coinpared it se1f wi t. h the l > ji ) contl ~ o1 ler in comnlon use and the regu1ar variable structure contro11 er
論文分別討論了潛器縱向，橫向和航向三個子系統在不同條件下的控制問題，考慮到該潛器潛航時外界干擾主要來自海流，驗證了模糊變結構控制方法對模型參數時變及海流速度、方向變化的強魯棒性，同時將該控制器跟實際工程中常用的pid控制器和常規的變結構控制器的控制效果進行比較，並結合實際情況，將該控制器同縱傾調節相結合進行控制以更好地滿足實際工程的需要。Based on the analysis of the kinetic track of the scallion during planting, basic relationships ' among the characteristic parameters of the transplanter with two flexible metal disks, including the velocity of the transplanter, the rate of transplanting, the spacing between seedlings, the angle of releasing seedlings, the diameter and length of seedlings, have been set up in this paper, and then a mathematic model of optimum design for the transplanter with the final planting angle of seedlings ( y = 90 ) has been formulated and solved with good results. according to the optimum solutions, a new type of transplanter with two flexible metal disks has been developed and the field tests of the transplanter have been conducted
為了實現大蔥機械化移栽，作者分析了國內各種移栽機的結構特點，確定了以撓性圓盤式栽植器為研究對象，在分析撓性圓盤式栽植器的運動軌跡和特徵參數的基礎上，完整地確立了撓性圓盤式移栽機的基本參數：栽植頻率、栽植株距、機組前進速度、輸送帶上秧槽的間距、撓性圓盤半徑、撓性圓盤的轉速、夾苗株數以及傳動比之間的相互關系，並建立了以蔥苗栽植傾角= 90為目標的優化設計數學模型，提出了撓性圓盤式大蔥移栽機的優化設計方法。The tension is controlled by the ratio metered ac drives located at the fabric transportation drums
織物張力控制是通過各送布輥上的交流馬達的速比控制而進行的。The same when the 3 - day chart shows up trend : it is always better to wait for reactions of 3 days and buy than it is to sell short, except in cases where there is a sharp advance
同樣，在3日圖中顯示趨勢向上，等待3天的反向行情，一般買進總比賣短更加適合，除了遇到那種急速上漲的情況。分享友人