Due to rotation characteristics of spindle and definite parameterized structure of aerostatics lubricated bearing ,mass-spring structural method equivalent to aerostatics bearing system was introduced and system main coordinates and inherent frequency were obtained by establishing dual movement equation.

針對(duì)氣體靜壓主軸的運(yùn)動(dòng)特性和氣體靜壓潤(rùn)滑軸承的參數(shù)結(jié)構(gòu)，提出了采用質(zhì)量-彈簧結(jié)構(gòu)方法來(lái)等效氣體靜壓軸頸軸承系統(tǒng)免费国产自在线拍，并建立了系統(tǒng)二自由度運(yùn)動(dòng)方程人人摸人人色人人操视播放，最終確定了系統(tǒng)的主坐標(biāo)系和固有頻率强奷乱码中文字幕精品。

Its primary coverage includes: Function and limit, derivative and differential, theorem of mean and derivative application, indefinite integral, definite integral and application, space analytic geometry and vector algebra, function of many variables differential method and application, multiple integral and curvilinear integral, infinite series, differential equation and so on.

其主要內(nèi)容有：函數(shù)與極限免费又大又粗又爽的视频，導(dǎo)數(shù)與微分，中值定理與導(dǎo)數(shù)應(yīng)用在线更新中文字幕视频，不定積分黄色视频久久久久，定積分及其應(yīng)用，空間解析幾何與矢量代數(shù)亚洲色婷婷开心综合，多元函數(shù)的微分法及其應(yīng)用射一射人人操一操，重積分與曲線積分，無(wú)窮級(jí)數(shù)，微分方程等国产精品国产三级农村A∨。

We can ex-tractn roots accurately and easily to each definite equation by the means of converting, discriminat-ing and substituting the auxiliary angle and so forth into the relevant radical formula.

對(duì)每個(gè)給定方程igao网为爱搞点激情，通過(guò)轉(zhuǎn)換、判別等方式黄色视频一级链接，將其轉(zhuǎn)換出的輔助角等代入配套求根公式国产精品免费视频色欲，就可求出準(zhǔn)確而簡(jiǎn)便的n個(gè)根。

Based on the dynamics fundamental equation, the rigid ships rolling coupled oscillation model was established, then the definite condition of the coupled oscillation equation under the regular transverse wave and first-order ordinary differential equations were presented. The ship vibration rule under the regular transverse wave was analyzed by examples, simultaneously the influence of damping coefficient on the vibration type was discussed.

基于動(dòng)力學(xué)基本方程95av视频，首先建立了剛性船舶橫搖的耦合振動(dòng)方程久久久久精彩视频，然后給出了在規(guī)則橫浪激勵(lì)下的耦合振動(dòng)方程的定解條件和一階常微分方程組，最后通過(guò)算例計(jì)算了在規(guī)則橫浪作用下船舶的振動(dòng)規(guī)律激情小说亚洲色图，同時(shí)研究了阻尼系數(shù)等參數(shù)對(duì)其振動(dòng)規(guī)律的影響情況乱人伦在线亚州。

This curriculum primary coverage includes: Function and limit, a circular function derivative and differential, theorem of mean and derivative application, indefinite integral, definite integral, definite integral application, space analytic geometry and vector algebra, function of many variables differential method and application, multiple integral, curvilinear integral and surface integral, infinite series, differential equation.

該課程的主要內(nèi)容有：函數(shù)與極限，一元函數(shù)的導(dǎo)數(shù)與微分草草A片，中值定理與導(dǎo)數(shù)的應(yīng)用全免费的一级毛片，不定積分，定積分亚洲日韩欧美国产V，定積分的應(yīng)用插入美女嫩穴漫画，空間解析幾何和向量代數(shù)，多元函數(shù)微分法及其應(yīng)用操喷视频，重積分免费操视频在线，曲線積分與曲面積分，無(wú)窮級(jí)數(shù)456亚洲视频在线观看，微分方程免费www你懂的网站视频。

In this paper, propose a new method based on the MATLAB/PDETOOL Box to solve the definite solution problems for elliptic equation problem, and the needed time of the program for the different nodes.

基于有限元的MATLAB/PDETOOL工具箱庫(kù)函數(shù)，對(duì)MREIT中的橢圓方程定解問(wèn)題進(jìn)行數(shù)值求解91资源总站，還給出了求解規(guī)則區(qū)域的定解問(wèn)題時(shí)自拍欧美日韩制服视频，不同節(jié)點(diǎn)所需的運(yùn)算時(shí)間。

ABSTRACT Aiming at problems of trans-vector controller in a vehicle-carried induction motor such as variable rotor and stator resistance following motor temperature, and their inductance varying with flux saturation degrees. Firstly, CSI and VSI are introduced, for CSI, it can hold the advantages both FOC and DTC using stator flux directional, PI parameter and simulation are also introduced. Secondly, equations of IM in the synchronous rotary frame and its static counterpart, as figuring in the saturation condition of magnetic field, are dealt in this paper and the simulation results are presented. Thereafter, the parameter designing of PI trans-vector controller is processed, which features the non-linear model. In practical realization, as neglecting the dynamical change of motor inductance, this paper employs online modification of inductance parameters, according to the flux saturation, then transforms the non-linear equations into linear ones, and so compacts the structure of controller. Thirdly, in view of the maximum torque output is extraordinary requisite when Electrical Vehicle start up, accelerate, and overtake, this paper issues the maximum torque when both inverter and battery capacity is corporeally definite. Fourthly, on-line differentiating and analyzing both rotor's time constants and its flux by using the expanding order reduction and discrete Kalman filter equation are fathomed, in order to realize high-performance trans-vector algorithm, and also the simulation results are presented. Fifthly, the close-loop regenerative brake system, when the EV's torque is set constant, is deduced; at the same time, unification of electric drive model and brake model is executed. Combined with maximum charge current demands, the mathematical model for online yielding torque as a demand.

本論文針對(duì)車(chē)載異步電機(jī)在矢量控制器所遇到的問(wèn)題：定轉(zhuǎn)子電阻隨溫度變化及隨電機(jī)飽和程度變化的轉(zhuǎn)子電感及定子電感而影響電機(jī)調(diào)速性能提出一套完整的解決方案：分析了電流型逆變器和電壓型逆變器在實(shí)現(xiàn)矢量控制時(shí)控制器參數(shù)的計(jì)算欧洲免费黄色网站，分析出對(duì)于電流型逆變器在采用定子磁場(chǎng)定向時(shí)一级黄色性交片，其性能同時(shí)具有矢量控制和直接轉(zhuǎn)矩控制兩者的優(yōu)勢(shì)，并對(duì)電壓型逆變器在轉(zhuǎn)子磁場(chǎng)定向下的模型進(jìn)行了仿真研究色色无码视频；建立異步電機(jī)非線性模型亚洲欧美日本另类，推導(dǎo)出考慮磁飽和時(shí)異步電機(jī)在同步旋轉(zhuǎn)坐標(biāo)系及靜止坐標(biāo)系下的方程，并做出了仿真結(jié)果超碰在线看，建立異步電機(jī)在非線性模型下的矢量控制調(diào)節(jié)器的PI參數(shù)設(shè)計(jì)日本中文在线中文幕，在實(shí)際應(yīng)用中，若忽略電機(jī)電感的動(dòng)態(tài)變化每日毛片视频，可以根據(jù)當(dāng)前的磁路飽和狀態(tài)而在線修正電感參數(shù)国产在线无码一区视频，從而將非線性方程線性化一进一出视频黄，降低控制器的復(fù)雜度；考慮到電動(dòng)汽車(chē)在起動(dòng)和加速超車(chē)時(shí)需要電機(jī)有最大轉(zhuǎn)矩輸出亚洲黄色免费网站，本文討論在逆變器容量一定和電池供電能力有限的情況下電機(jī)最大轉(zhuǎn)矩輸出問(wèn)題成熟yin荡美妞A片视频；推導(dǎo)了異步電機(jī)擴(kuò)展降階、離散卡爾曼濾波方程在線辨識(shí)轉(zhuǎn)子時(shí)間常數(shù)和轉(zhuǎn)子磁通91在线看看，用于實(shí)現(xiàn)高性能的矢量控制算法看片免费w，并給出了仿真結(jié)果；推導(dǎo)出了電動(dòng)汽車(chē)恒轉(zhuǎn)矩給定的閉環(huán)回饋制動(dòng)系統(tǒng)国产线观看A片免费看一及，實(shí)現(xiàn)了電動(dòng)控制模型和制動(dòng)模型的統(tǒng)一中国一级无毒不卡黄片，而且結(jié)合鉛酸電池最大充電電流的要求，為制動(dòng)轉(zhuǎn)矩在線給定建立了數(shù)學(xué)模型亚洲精品一二三区；設(shè)計(jì)了基于雙DSP系統(tǒng)的高性能矢量控制器軟硬件框圖精品国产91久久久久久久妲己，并以大量實(shí)驗(yàn)數(shù)據(jù)說(shuō)明矢量控制在電動(dòng)汽車(chē)應(yīng)用的實(shí)際應(yīng)用狀況。

Lyapunov second method is applied to analysis of partial stability of equilibrium of linear ordinary differential equation with constant coefficients, the problems on partial stable matrix, partial positive definite matrix and Lyapunov matrix equation are studied.

將Lyapunov第二方法用于研究常系數(shù)線性系統(tǒng)零解的部分變?cè)獫u近穩(wěn)定性肏屄毛片免费看，可引出相關(guān)的一些特殊矩陣問(wèn)題欧美日一区二区黄，包括部分穩(wěn)定矩陣、部分位正定矩陣性爱一级高清无码视频、矩陣方程的可解性等国产做a爱一级毛片久久潮。

The first is refered to the vibration model with retardation for the market equilibrium price, where the knowledge of the second order linear ordinary differential equation is used. The second is refered to the optimal pricing model of the price under the frame of the social welfare, where the concept of the definite integral is exploited.

第一個(gè)是研究市場(chǎng)調(diào)節(jié)下平衡價(jià)格的阻尼振蕩模型，使用了二階線性常系數(shù)微分方程的課程知識(shí)k8经典网性饥渴少妇；第二個(gè)是在引進(jìn)社會(huì)福利因素時(shí)商品的最優(yōu)定價(jià)模型国产精品一级毛片国语一级A片，使用了定積分和微分法的課程知識(shí)。

First of all, in the study from magnetohydrodynamics equilibrium equations describe the plasma derived from the balance of the Grad-Shafranov equation of the theory of expression, and to analyze its borders in a fixed way to solve the region;then we solved the equation with Variational method in given pressure, and the exact numerical value of poloidal magnetic flux and the profile of the magnetic flux surfaces contours in the definite error range are given.At last, the poloidal and toroidal magnetic field with D-shaped is obtained.

在研究中首先從磁流體力學(xué)平衡方程出發(fā)推導(dǎo)出描述等離子體平衡問(wèn)題的Grad-Shafranov方程的理論表達(dá)式久久视屏性爱AV，并分析其在固定邊界區(qū)域內(nèi)的求解途徑欧美一级免费性爱；然后在給定的壓強(qiáng)分布情況下采用基于能量形式的變分法對(duì)其進(jìn)行了數(shù)值計(jì)算，并在一定的誤差范圍內(nèi)得到了極向磁通的大致圖像以及等離子體的平衡位形分布性交黄色视频；最后求出了D-型截面下的極向磁場(chǎng)以及環(huán)向磁場(chǎng)分布国产欧美第一页。