靜態流變參數 的英文怎麼說
中文拼音 [jìngtàiliúbiànshēnshǔ]
靜態流變參數
英文
static rheological parameter- 靜 : Ⅰ形容詞1. (安定不動; 平靜) still; calm; motionless 2. (沒有聲響; 清靜) silent; quiet Ⅱ名詞(姓氏) a surname
- 態 : 名詞1. (形狀; 狀態) form; condition; appearance 2. [物理學] (物質結構的狀態或階段) state 3. [語言學] (一種語法范疇) voice
- 流 : Ⅰ動1 (液體移動; 流動) flow 2 (移動不定) drift; move; wander 3 (流傳; 傳播) spread 4 (向壞...
- 參 : 參構詞成分。
- 數 : 數副詞(屢次) frequently; repeatedly
- 靜態 : [物理學] static state; quiescent condition; steady state; statics; dead level; akinesis; akynesis...
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The subject of this thesis is to study ironless moving coil linear permanent magnet synchronous motor and the major works in this thesis are summarized as follows : 1 ) two analytical formulas are derived by concentrated current method and distributed current method to determine the magnetic field due to pm, based on the current model of pm. besides, two method ( magnetic charge method and solution by laplace equation method ) are also introduced with comparing their advantages and disadvantages. then the effects of the motor parameters on the flux distribution are discussed
本文對空芯動圈式直線同步電動機進行了深入細致的研究,內容包括: ( 1 )採用電流模型推導出兩種計算永磁磁極二維氣隙磁場的解析公式(集中電流法、分佈電流法) ,同時介紹了兩種永磁電機氣隙磁場計算方法(磁荷法,直接求解拉氏方程法) ,分析各種方法的優缺點,討論電機參數對氣隙磁密的影響; ( 2 )介紹了單層同心繞組的布置方式,根據安培定律推導出空芯動圈式直線永磁同步電動機的靜推力計算公式,分析靜態力?位移特性; ( 3 )建立空芯動圈式直線永磁同步電動機動態模擬模型,模擬不同驅動方式下電動機起動、穩態運行時電磁力、速度、位移的變化情況。On the basis of theoretical analysis and numerical calculations using matlab language combined with a real instance, it is indicated that the improper electrical parameter coordination caused by the abundance of power cable lines result in fundamental frequency current resonance, in addition, the countermeasures based on svc to solve the problem are put forward
文中結合某變電站異常運行狀態實例,在理論分析和matlab語言數值計算的基礎上,指出由於電纜的大量使用導致了該系統參數配合不當,從而誘發了基波電流諧振,並提出裝設靜態補償器以防範該類諧振。Based on netomac, a software package for power system simulation, the model and algorithm of pre - dispatch schedule in generation markets, excitation system parameter setting, and power system small signal stability anaylsis are studied in this thesis. the main work is as follows : a model of pre - dispatch schedule is proposed, whose target is to minimize the market purchasing price ( mpp ) in the whole pre - dispatch period. then according to the characteristics of pre - dispatch schedule, the model of pre - dispatch schedule is simplified to minimize the mpp in each pre - dispatch time, and a three - step algorithm of pre - dispatch schedule is designed : dealing with the optimal problem in the whole period of pre - dispatch with static planning method, solving the problem of combination of machines with pr1 method, resolving problem of optimal power flow ( opf ) with modified powell method
本文基於netomac模擬軟體,以發電市場預調度計劃模型及演算法、勵磁系統參數整定和電力系統小擾動穩定性分析為研究內容,主要做了以下工作:建立了以整個預調度計劃周期內的市場購電價格最小為目標的發電市場預調度計劃模型,並根據預調度計劃問題狀態數多、變量多、混合整數、非解析的特點,將預調度計劃模型的目標函數簡化為各時段的市場清算電價最小,設計了三段式預調度演算法:用靜態規劃法求解整個預調度計劃周期內的優化問題;用優先級法求解機組組合問題;用改進的powell法求解最優潮流問題。The writer mainly uses the financial ratio analytical method and the most popular approaches in determining the international banking efficiency ? the efficient frontier approaches, in which this paper choose one of the non - parameter approaches, data envelopment analysis ( dea ), to evaluate and analyze the above four banks ’ changes in efficiency before and after mergers during 1999 - 2004, and it also makes an omni - directional comparison from many angles, with quantitative and qualitative analysis
通過綜合運用財務比率分析方法和國際銀行業效率分析中比較流行的前沿分析方法中的非參數分析方法? ?數據包絡分析法( dea )對上述四大銀行在1999 - 2004年間銀行並購效率的變化情況進行了全方位、多角度、動靜態相結合的定量和定性比較分析。The results of numerical experiments, using the four - dimensional variational data assimilation system of the nonhydrostatic mesoscale model mm5, show that : the tangent linear model and adjoint model conducted by keeping the " on - off " switches the same as the basic state, can provide a good approximation of the first - order information to the nlm perturbation and a good descent direction for the minimization procedure ; switching on and off at every other time step in the kuo cumulus parameterization scheme do n ' t impact the convergence rate of cost function ; the existence of the switches do n ' t impact improvement to the mm5 model rainfall prediction because that not only specific humidity, but also wind, temperature and pressure are assimilated into the model
非靜力中尺度數值模式mm5的四維變分資料同化系統進行的數值試驗結果表明: 「開關」變量保持與基態一致,所構造的切向線性模式能夠提供關于非線性模式擾動的一階近似,伴隨模式所計算的梯度值能夠為最小化過程提供較好的下降方向;郭氏降水參數化方案中對流每隔一個積分步的交替發生並不影響目標函數最小化的收斂速度; 「開關」變量的存在也不影響將風、溫度、氣壓和比濕結合起來同化對mm5降水預報準確性的提高。The propeller is belong to the thin - wall and jib - arm part, and it is needed to analyzing the strength and rigidity
從中找出流場的變化規律和最理想參數值。 5對攪拌槳進行結構動、靜態分析。So the paper combined the fuzzy logic control and recurrent neural network, and the recurrent fuzzy neural network ( rfnn ) controller is introduced into the speedsensorless vector control system. moreover, an online parameter training methodology, which is derived from the lyapunov stability theorem and gradient descent method is proposed to increase the learning capability of the rfnn. the rfnn controller has a better performance than the pi controller system ; the effectiveness of the proposed control scheme is verified by simulation results
因此論文將模糊控制和具有優越動態性能的遞歸神經網路結合起來,取長補短,提出了一種遞歸模糊神經網路控制方法,利用神經網路來實現模糊推理,可動態的調整隸屬函數的形狀、位置以及神經網路遞歸權值,並對其與pi控制器的交流調速控制系統進行了模擬比較,模擬結果表明與普通的pi控制器相比較,遞歸模糊神經網路控制器有較好的動態性能,控制器的收斂速度快、靜差小,系統在遇到參數發生變化和外部不確定性問題時魯棒性、抗擾動性有明顯的提高。Furthermore, aqm also need to avoid sending congestion notification to too many sources and consequently decreasing the utilization of bottleneck link. therefore the sending rate of congestion notification should relate to the traffic load but red does n ' t take this factor into consideration thereby resulting in queu e size oscillate which arose queuing delay and jitter
具體說來, red演算法中擁塞指示的發送速率主要是由參數max _ p來體現的,並且max _ p值是靜態設置的,所以當流量負荷發生改變時red演算法難以適應這種變化,從而會引起隊列振蕩,導致不必要的傳輸延遲和抖動現象。However, there is not much study on evaluation of enterprise value about sustainable operating enterprises. even though there is relative evaluation method such as discount cash flow model ( dcfm ), it is static too, and the dynamic change of enterprise ' s value and cash flow are not been reflected well. those parameters in this model such a
而對持續經營的企業價值進行估價的研究並不明顯,即使有相關的估價方法如折現現金流量方法,也只是靜態的現金流量方法,企業價值和現金流量的動態變化沒有得到很好的反映,關于這個模型的參數(如折現率和企業存續期)也缺乏定量與定性分析。Taking the hydrostatic equilibrium of axial force of pump dm360 as the example, this paper elaborates design calculation and dynamic - static characteristic analysis of hydrostatic bearing with twisting plate throttle, derives design parameters and formulas of bearing structure, discusses effects of various main factors ( oil viscosity, compressibility, distortion coefficient of twisting plate, pressure of oil source, and bearing clearance ) on dynamic characteristic, and obtains some conclusions about the application of hydrostatic bearing in engineering practice
本文以dm360型泵軸向力的液體靜壓支承平衡為例,對扭板節流靜壓支承的設計計算和動靜態特性分析進行了較為詳盡的闡述,推導出支承結構的設計參數和公式,討論了各種主要因素(油液的粘度、油液的可壓縮性、扭板變形系數、供油壓力、支承間隙)對支承動態特性的影響,給出了一些結論。分享友人