調壓差值 的英文怎麼說
中文拼音 [diàoyāchāzhí]
調壓差值
英文
override pressure-
The main operating transformer connected by a adscititious tandem on - load - tap - changing one is the important mode. about this question readers can get a correct and detailed answer from this paper
通過基本定義和有關名牌值進行了計算和分析,認為在正負極限檔,外加串聯調壓變的阻抗值相對額定檔的偏差很小,所以可不必在意這種變壓器整體阻抗的偏差值。The theoretic calculating method of the maximum and the minimum water level in the differential surge tank has been derived firstly. also the explicit method of calculating surges in the differential surge tank has been deduced firstly by use of thaler series expansion. the calculating method of section of the well and the effective impedance hole in the surge tank has been gived
根據差動式調壓室的基本微分方程,首次推導出了差動式調壓室涌浪幅值的理論計算公式;並同樣利用泰勒級數展開方法推導出了差動式調壓室水位波動的顯式計算式;導出了差動式調壓室大井面積和有效阻抗孔面積的計算方法。Abstract : incompatible element nh11 and hybrid stress element 18 were employed to analyze rock burst occurring in coal face 9108 of sanhejian coal mine. compared with the results from ansys, the two optimized fems can execute more accurate numerical simulation in the research of rock burst as well as other rock problems and lessen the errors from inaedquately meshing in huge calculations due to the limitation of labor and computer time. in addition, the criterion of averaged generalized stress rate was proposed and used to determine the site and moment of rock burst. the given conclusion is in accordance with the face of coal face 9108 very well
文摘:利用優化非協調元和雜交元分析了三河尖礦沖擊礦壓,並與ansys程序的計算結果進行了比較.認為優化有限元在沖擊礦壓乃至巖石材料的數值模擬中能給出更為精確的結果,也可減小大型計算中由於人力、機時所限粗分網格產生的誤差.分析中,採用了廣義平均應力率準則來判斷沖擊點位置和沖擊時刻,所得結論與實際情況吻合In this paper, the application of dsp technology in electric power measurement meter has been studied, meanwhile analysed the error of the electronic energy meter, put forward the measure to compensate error with software method. it not only changes the precision degree of electric power measurement meter, but also avoids the disadvantage from error compensate with hardware method, it is unnecessary to adjust the sample value of voltage and electric current in circuitry
對dsp技術在電度表中的應用進行了研究,對電度表系統的誤差進行了分析,提出了採用軟體方法來補償誤差的措施,使電度表的精度達到了設計要求,又避免了利用硬體進行誤差補償所帶來的弊端,不用在線路中調整電壓、電流采樣值,有利於生產。It also builds the mathematic model of all section of vscf ac exited wind power generation system on a - b - b and d - q coordinate system by the coordinate commutation technology. the thesis gives the characteristics of torque, active power, reactive power and the steady - state analysis of it. it proves that the capability of wind generator is determined to slip, the amplitude and phase of rotor voltage, the phase dispatch between stator voltage and rotor voltage
並分析了交流勵磁風力發電機作變速恆頻運行時的工作原理,闡述了與同步發電機、異步發電機的不同之處,分析了其能量平衡關系,在坐標變換技術的幫助下,詳細推導了交流勵磁發電機在a - b - c坐標系和d - q坐標系下的數學模型,分析並模擬了其有功和無功特性、轉矩和功率調節特性、穩態運行和機械特性,證明了發電機的性能由轉差率、轉子電壓的相位和幅值、定轉子電壓相位差所決定的。To accept the current signal from high negative voltage circuit, the analog ground is raised to a certain positive voltage, which makes it possible for the signal amplitude to be compressed at the same time of its polarity reversion. a pi control program special for laser gyro current control is brought forward according to the conventional pid control method, in which the control signal is figured out corresponding to the difference between the sample and the reference value by turn of proportion - short step integral - long step integral. and at the end of this paper, a comparison of system performance on different conditions is made and the key elements influencing system performance are educed
利用集成a / d 、 d / a轉換器的新型晶元aduc824 ,實現了電流(電壓)采樣?數據處理?電流控制的閉環控制結構;地電位的抬升解決了a / d轉換器對負高壓迴路電流采樣時的輸入范圍匹配問題;控制信號反相的同時進行幅度壓縮,使得輸出調整電壓的解析度提高;根據常規的比例?積分?微分( pid )調節模型,針對陀螺系統的特性,給出了一種可以滿足系統要求、據采樣值偏差大小進行的比例?大步長積分?小步長積分、分層次比例?積分演算法;不同條件下系統穩流性能的對比、分析在論文最後給出,並據此找出了決定該系統穩流精度的關鍵因素,提出了系統的改進意見。At the beginning of this article, we give the analysis about the principle of external condensation. we find out that the most important factor in the condensation is the temperature of the air in the system. and we point out the factors which can make influence in the external condensation, such as the temperature and the humidity of the environment, the temperature and the pressure of the supplying air, the load of the system, the area of passage of speed control valve, and so on. next, we give the mathematics model of the pneumatic system using the knowledge of aerodynamics and heat transfer theory. and using the finite difference method and the numerical analysis we can get the solutions of the model. we use c program to simulate the model
本文首先對氣動系統外部結露的原理進行了分析,指出了氣動系統內部氣體溫度下降是氣動系統外部結露根本原因,提出了影響氣動外部結露的主要因素,包括環境溫度、環境濕度、供氣壓力、供氣溫度、氣缸負載和調速閥開度等。然後應用氣體動力學、氣體熱力學和傳熱學對氣動系統建立數學模型,用逆步進有限差分法和數值分析演算法對所建模型進行求解,利用c語言編製程序對氣動系統模型進行模擬,給出了氣管及氣缸內氣體的各個時刻的狀態參數。The simulation results in this thesis indicate that, its settling - time to full swing is 15ns with 3v supply, the total static power dissipation is less than 50mw, the differential nonlinearity error is 0. 58lsb, the integral nonlinearity error is 0. 54 lsb, spurious free dynamic range is more than 60db, and the output current can be adjusted
本課題設計的數模轉換器性能指標為:工作電壓3v ,建立時間15ns ,微分非線性誤差0 . 58lsb ,積分非線性誤差0 . 54lsb , sfdr高於60db ,總功耗不到50mw ,輸出電流可調。設計成果可應用於數據處理和控制系統電路中,具有一定的先進性和實用價值。The results show that under the condition of the squeezing - power - number being an any even number or the pruduct of the squeezing - power - number and the total cavity - mode - number being an any even number, if some certain and fixed conditions are satisfied respectively by the initial phase of each mode in the state or the sum of the initial phase of each mode in the same state mentioned above, by the initial phase difference between any two components in the state, and by the sum of mean photon - numbers, which are modulated by the initial phase of each mode in the state mentioned, of all the single mode coherent states light field, the state can always display the effect of generalized nonlinear equal - power n - th power y - squeezing, or present the effect of generalized nonlinear equal - power n - th power h - squeezing, that changes alternatively and periodically
結果發現:在壓縮次數取偶數或者壓縮次數與腔模總數這兩者之積取偶數的條件下,若各模的初始相位或者各模的初始相位和、態間的初始相位差以及受各模的初始相位調制的各單模相干態光場的平均光子數之總和等分別滿足一定的取值條件,則態| ~ ( ( 4 ) ) _ q的第一和第二這兩個正交相位分量總可分別呈現出周期性變化的、西北人學碩{ _學位論文摘要廣義非線性等冪次n次方y壓縮或者等冪次n次方h壓縮效應。In the fourth chapter, a fourth - order chebyshev low - pass filter employs new low voltage, highly linear, wide inputting range transconductor is proposed, then we presents a new circuit to tune gm value of transconductor accurately, which employs a new switched - capacitor circuit to change the bias current of transconductor, a third order elliptical function low - pass filter with accurate tunable frequency has been designed using transconductor that is not only with voltage common - mode negative feedback, but also with varying bias - triode transistors which can improve the linearity of this circuit
第四章:提出了一種新的低電壓、高線性度、寬輸入范圍跨導,並由此設計實現了四階切比雪夫( chebyshev )低通濾波器,接著提出了一種寬輸入范圍且具有電壓共模負反饋的全差分跨導,並採用一種新的開關電容電路實現跨導值gm精確可調,從而可以設計得到高性能具有精確截止頻率的跨導-電容三階橢圓函數濾波器。Theoretically, this quadrature can classify image blocks effectively, which bring out big speed - up ratio in fractal encoding ; and this feature is a continuous value, which enables us to adjust the quality of decoded images by changing the number of classes. our experimental results show that, comparing with exhaustive search, when the class number is 25, we obtain 20 times speed - up ratio, with only image degeneration of 2. 08db, at the same compression ratio
_ }速比;這種不變量也是連續量,大量的數值實驗表明,因此還可通過改變分類數目來調竹解碼圖像的質量在壓縮比相同的前提下,與全局搜索法相比,塊分為25類時,可取得約20倍的加速比,而解碼質量只相差2In the fifth chapter, a new fully differential operational amplifier with voltage and current - mode negative feedback has been proposed, which can stabilize its quiescent operation point, using the characteristic of mos transistors which operate in the triode region acting as active variable resistor, a fully differential fourth - order chebyshev low - pass filter with tunable frequency and bessel low - pass filter with accurate group delay based on r - mosfet - c and operational amplifier has been designed
第五章:提出了一種新的既具有電壓共模負反饋又同時具有電流共模負反饋的全差分運算放大器電路,能較好地穩定電路的靜態工作點,並應用mos管工作在線性區可作有源可變電阻用的特性設計得到了截止頻率可連續調節的高性能r - mosfet - c 、運放結構切比雪夫( chebyshev )和精確群時延值貝塞爾( bessel )低通濾波器。A positive output gap, rising import prices ( in part associated with the weak us dollar ), and higher market rentals will exert upward pressure on consumer prices
正數產值差距、進口價格上漲(部分與美元疲弱有關) ,以及市值租金升高,將會對消費物價造成上調壓力。Phase synchronizing means synchronizing the phase of the reference voltage ; amplitude modulating means modulating the amplitude of the reference voltage in according to the difference of the output current
同步是指基準電壓的相位同步,調幅是指根據輸出電流之差調節基準電壓幅值。In chapter six, based on the preceding chapters " research, the practicality of the full scale dr i 11 ing simulating test device has been tested by the debugging and the performance test. under simulating drilling conditions, the rock mechanical properties and the bits " dynamical tests are analyzed and set forth specifically. at the same time the effect of bottom pressure difference on the oil field exploration and development has been discussed
第六章在前述分析研究的基礎上,通過對模擬裝置的系統調試及性能測試,驗證了全尺寸鉆井模擬裝置的實用性,在鉆井模擬條件下對巖石的機械性質、牙輪鉆頭動態測試給予了具體的分析闡述,同時還分析探討了井底壓差對油田勘探開發的影illb ,並且為宋深101井的實際施工作業提供了非常有價值的指導參數。It is found that whether the squeezing - power - number is an odd or even number, or whether the product of the squeezing - power - number and the total cavity - mode - number is an odd or even number, while some fixed conditions are satisfied respectively by the initial phase of each mode in the state or the sum of the initial phase of each mode in the same state, by the initial phase difference between any two components in the state and by the sum of mean photon - numbers, which are modulated by the initial phase of each mode in the state involved, of all the single mode coherent states light field, v the state can always display the effects of generalized nonlinear equal - power n - th power y - squeezing and unequal - power nj - th power y - squeezing, or present the effects of generalized nonlinear equal - power n - th power h - squeezing and unequal - power nj - th power h - squeezing, which changes alternatively and periodically
結果發現:無論壓縮次數或者壓縮次數與腔模總數這兩者之積取奇數還是取偶數,只要各模的初始相位或者各模的初始相位和、態間的初始相位差以及受各模的初始相位調制的各單模相干態光場的平均光子數之總和等分別滿足一定的取值條件,那麼態| _ 5 ~ ( ( 3 ) ) _ q的第一和第二這兩個正交相位分量就可分別呈現出周期性變化的、廣義非線性等冪次n次方y壓縮和不等冪次n _ j次方y壓縮或者等冪次n次方h壓縮和不等冪次n _ j次方h壓縮效應。Convert fuzzy rules into algebraic expression to solve the deficiency of the two former, which cannot adjust control rules online. by putting emphasis on error - in - slip, look - up table of weight values on error - in - slip is established to adjust real - time control rules and simulated to regulate braking pressure
針對前面兩種模糊控制器無法實時調節控制規則的缺陷,將模糊規則轉化為解析式的描述,並以滑移率誤差為著眼點,通過建立滑移率誤差權值查詢表,實時調整控制規則,達到調整制動壓力的目的,並對演算法進行了模擬。This constant - pressure hydraulic power adopts plvc4 programmable logical controller for valve to control the electro - hydraulic proportional relief valve to adjust the pressure at the entrance of the servo valve and makes it change with the pressure change at the exit thus to keep the pressure difference constant
此恆壓油源採用閥用可編程式控制制器plvc4控制電液比例溢流閥調節伺服閥入口壓力,使其跟隨伺服閥出口壓力變化,達到入出口壓力差值恆定的目的。In recent times, however, the increasing trade surplus, together with the rising foreign exchange reserves, have caused sever pressure on the appreciation of rmb. under such circumstance, on october 2003, the state taxation administration has announced “ notice of the ministry of finance and the state administration of taxation on adjusting the export rebate ”, expecting that this new regulation would improve the structure of exporting commodities, and lessen the pressure of rmb appreciation
但是,近年來我國出口貿易順差連年增長,外匯儲備不斷增加給人民幣升值造成了一定的壓力,在這種情況下,國家稅務總局於2003年10月份出臺了《關于調整出口貨物退稅率的通知》 ,目的在於改善我國出口產品結構,緩解人民幣升值壓力等分享友人