預穩態 的英文怎麼說
中文拼音 [yùwěntài]
預穩態
英文
pre-steady state-
No conformity was found between the measured values and the calculated stationary temperature field.
人們發現實測值和預測的穩態溫度場之間並不相符。For a class of series - wound active power line conditioner the design approach law of a new fuzzy integral sliding mode variable structure control is presented. this method adjusts power electronic switch in order to achieve anticipated balance volt, finally makes active power line conditioner not only possess good robustness of variable - structure control and decrease vibration to the most but also increase the steady state precision. series - wound aplc adopted this control method possesses good dynamic and steady state performance
針對串聯型有源電網調節器運用變結構控制策略,調節電力電子開關模式,以獲得預期的平衡電壓,對串聯型有源電網調節器提出了模糊積分變結構控制方法,使串聯型有源電網調節器既保持了常規滑模控制強魯棒性的優點,又減弱了滑模控制的抖振,提高了系統的穩態精度,使系統具有良好的動態和靜態性能,模擬試驗表明該控制策略是一種十分有效的控制方法。In order to realize the on - line prediction the baking temperature of ladle lining, and to study its temperature uniformity, a 3 - d transient mathematical model with multi - inlet and multi - outlet of ladle heating facility facilities was built
摘要為了對鋼包的烘烤溫度進行在線預測,筆者耦合了流體流動、燃燒和換熱過程,建立了多入口、多出口的三維非穩態鋼包烘烤數學模型。In order to improve the utilization efficiency of energy and equipment, a general steady simulation model of complex cross - feed multi - effect evaporation was established for the purpose of in - depth research on rule of multi - effect evaporation. in this model, the energy - saving measures, including extra steam being led off to preheat material liquid, the condensation water flash and solution flash, were adopted, and the solid separation was also considered in the process of evaporation
為了提高多效蒸發系統能量與設備的利用效率以及深入研究多效蒸發過程的規律,建立了帶有冷凝水閃蒸、溶液閃蒸和引出額外蒸汽預熱原料液等節能措施並考慮蒸發過程有固相析出的復雜錯流多效蒸發穩態模擬通用模型。The dynamics behaviors of the flexible jeffcott rotor system supported by unsteady short dynamic bearing are investigated. based on nonlinear unsteady - state dynamic n - oil film force model described by three functions the local stability of the periodic solutions with the controlling parameters, rotational speed ratio, imbalance amount, damping ratio and viscidity, are predicted by using the floquet multiplier. it is found that the period doubling bifurcation is caused by a certain imbalance amount and the hopf bifurcation is created by the lost stability of the oil - film
研究了非穩態動載短軸承支撐的jeffcott柔性轉子系統的動力特性,基於可用三個函數表示動態油膜的非穩態非線性油膜力模型,將轉速比、不平衡量、阻尼比、粘度作為控制參數,利用floquet乘子預測周期解的局部穩定性,發現倍周期分叉是由一定量的不平衡引起的,而hopf分叉是由油膜失穩造成的。Prediction of hydrodynamic pressure. the thesis presents a practical engineering method to predict the hydrodynamic pressure on instantaneous wet ship surface
關於水動壓力預報:本文提出了基於二維擾動流場頻域穩態解的一種預報船體瞬時濕表面壓力分佈的工程實用方法。On - line monitoring of hvcb is the precondition of predicting maintenance, is the key element of reliable run, and is the important supplement to the traditional off - line preventive maintenance in fact, the faults are made by hvcb, no matter in number or in times, is over 60 % of total faults so it has determinative importance for improving the reliability of power supply and this can greatly decrease the capital waste used by - dating overhaul in this paper, the inspecting way of hvcb mechanism characteristic is discussed the concept of sub - circuit protector is presented, the scheme that we offered has been combined with sub - circuit integrality monitoring theory, to ensure that it has the two functions as a whole according the shut - off times at rated short circuit given by hvcb manufacturer, the electricity longevity loss can be calculated in each operation, and the remained longevity can be forecast too an indirect way for calculating main touch ' s temperature by using breaker shell temperature, air circumference temperature and breaker ' s heat resistance is improved in this paper, and main touch resistance can be calculated if providing the load current msp430, a new single chip microcomputer made by ti company, is engaged to develop the hardware system of the on - line monitoring device, and special problem brought by the lower supply voltage range of this chip is considered fully
高壓斷路器所造成的事故無論是在次數,還是在事故所造成的停電時間上都占據總量60以上。因此,及時了解斷路器的工作狀態對提高供電可靠性有決定性意義;並可以大大減少盲目定期檢修帶來的資金浪費。本文論述了斷路器機械特性參數監測方法;提出了二次迴路保護器的概念,並將跳、合閘線圈完整性監視和二次迴路保護結合起來,給出具有完整性監視功能的二次迴路保護器實現方案;根據斷路器生產廠家提供的斷路器額定短路電流分斷次數,計算每次分閘對應的觸頭電壽命損耗,預測觸頭電壽命;提出根據斷路器殼體溫度和斷路器周圍空氣溫度結合斷路器熱阻來計算斷路器主觸頭穩態溫升的方法,並根據此時的負荷電流間接計算主觸頭迴路的電阻;在硬體電路設計上,採用美國ti公司最新推出的一種功能強大的單片機msp430 ,並充分考慮該晶元的適用電壓范圍給設計帶來的特殊問題;在通信模塊的設計中,解決了不同工作電壓晶元之間的介面問題,並給出了直接聯接的接線方案。Research on forecasting model of incidence rate of deafness induced by instable state noise based on bp neural network
基於人工神經網路的非穩態噪聲性耳聾發病率預測模型的研究Speed prediction ability of unitire steady - state model
輪胎穩態模型的速度預測能力The same conclusion as derived from the original pda under approximate condition is concluded this way without any approximations. the second method is the instant - state performance prediction based on the hyca method. this method not only gives the off - line recursive error variance relation, but also gets a series of performance measurement such as track life
然後應用兩種方法對其進行性能估計和預測,一是基於riccati方程的穩態性能估計,其結果與pda演算法近似條件下得出的結論相同;二是基於hyca方法的瞬態性能預測,不僅給出了誤差方差的離線遞推關系,而且得到了航跡壽命等一系列性能指標的估計值。A gray prediction model of autofrettage residual stress relaxation in even temperature field
穩態溫度場下自增強殘余應力鬆弛的灰色預測Applications of their to self - tuning filtering are given, where the steady - state kalman tracking filter with the position and velocity measurements, and multivariable self - tuning tracking predictor, filter and smoother are presented
給出了它們在自校正濾波中的一些應用。其中包括帶位置和速度觀測的穩態kalman跟蹤濾波器和多變量自校正跟蹤預報器、濾波器和平滑器。The main results are : ( 1 ) the imc structure of the dual - rate predictive control system is derived, and its robust stability and zero steady state error characteristics are analyzed
論文的主要結果有: ( 1 )對雙速率采樣預測控制系統的性能進行了分析.推導雙速率采樣預測控制系統具有內模結構,研究了雙速率采樣預測控制系統的魯棒穩定性和零穩態偏差特性The software is developed on the platform of labwindows / cvi that includes nine main modules : data acquisition, pre - processing, stable state analysis, tracking filter, time domain analysis, frequency domain analysis, modern processing method, wavelet transform and trend analysis. it is provided with friendly man - machine communication interface, handy operation and all - around functions
該軟體以labwindows cvi為開發平臺,共包括九個模塊:數據提取模塊、預處理模塊、穩態分析模塊、跟蹤濾波模塊、時域分析模塊、頻域分析模塊,現代處理方法模塊、小波分析模塊、以及趨勢分析模塊;軟體具有良好的人機交互界面,操作簡便,功能齊備。According to the implementation and practical requirement, we research the local steady - state optimization and dynamic optimization algorithm in mpc package
從模型預測控制工程軟體的實際需要出發對模型預測控制演算法的模型預測、穩態優化演算法,動態優化演算法進行了研究。Because the qam signal which is small roll - up factor has big timing - error jitter in steady state that result in big timing jitter, an expression of impulse response for digital prefilter is deduced and a kind of sub - optimum design method for digital prefilter is proposed in this paper
針對匹配濾波器滾降因子較小的qam信號的穩態定時誤差信號抖動較大,而造成較大定時抖動的情況。推導了一種用於減少定時抖動數字預濾波器的沖激響應表達式,並且提出一種數字預濾波器的設計方法,設計了一種優化數字預濾波器。Realizing the application of the empirical mode decomposition in the instantaneous characters extraction of the non - linear and non - stationary signals. in the meanwhile, it has proved that it is feasible to realize the similar pattern matching of the stocks " forecasting, if the empirical mode decomposition and the forward propagation learning algorithm of multi layered neural networks with feed back connections are related
實現了經驗模態分解方法在非線性和非穩態信號瞬時特徵提取中的應用;同時利用實驗數據證明了經驗模態分解方法與多層反饋神經網路fp演算法相結合,來完成股票數據預測中的相似模式匹配的可行性。A numerical study has been carried out to predict mass flow rate, temperature field and velocity field for different models and configurations of solar chimney under steady - state conditions, k - e turbulence models and wall function methods were used
本文使用-湍流模型結合壁面函數法,對穩態條件下,不同模型、不同結構尺寸的太陽能煙囪的通風量、溫度場和速度場進行預測。Applications of multiple - model smoothing algorithms for maneuvering target tracking are studied via simulation, some important conclusions are obtained. based on model - set sequential likelihood ratio, an enhanced agimm, in which model - set adaptation is implemented by jointly utilizing model posterior probability and predication probability, is proposed, simulation results indicate that improvements of both dynamic and steady state tracking performance are achieved with the enhanced algorithm
模擬研究了多模型平滑演算法在機動目標跟蹤中的應用;利用模型集合序貫似然比檢驗,提出了一種綜合利用模型后驗概率和預測概率實現模型集合自適應的綜合格自適應多模型演算法,模擬實驗表明演算法有效改善了動態跟蹤精度和穩態跟蹤性能。A new approach of transient productivity forecasting in luojiazhai gas reservoir
羅家寨氣藏非穩態產能預測新方法研究分享友人