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The model used is the same as that which Hoyle and Schwarzschild have constructed and thereafter Kippenhahn and others have improved.

星族I与星族11模型相同，所不同的只是金属舍量，这对于模型的计算方法和程序设计并无原则差别。

Thereafter, she was styled HRH The Princess Royal .

此后，她自称安妮公主殿下。

Thereafter however,hypoploid cell frequency on the medium with low sucrosewas remarkably edcreased.

但之后，低浓度蔗糖培养基上亚倍体细胞频率明显减小。

Soon thereafter, private agents scoured the ports taverns, and countryside to sign on workers for indenture.

此后不久，私人机构迅速搜查港口的客栈和乡下地区，来招募契约仆役。

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.

本论文针对车载异步电机在矢量控制器所遇到的问题：定转子电阻随温度变化及随电机饱和程度变化的转子电感及定子电感而影响电机调速性能提出一套完整的解决方案：分析了电流型逆变器和电压型逆变器在实现矢量控制时控制器参数的计算，分析出对于电流型逆变器在采用定子磁场定向时，其性能同时具有矢量控制和直接转矩控制两者的优势，并对电压型逆变器在转子磁场定向下的模型进行了仿真研究；建立异步电机非线性模型，推导出考虑磁饱和时异步电机在同步旋转坐标系及静止坐标系下的方程，并做出了仿真结果，建立异步电机在非线性模型下的矢量控制调节器的PI参数设计，在实际应用中，若忽略电机电感的动态变化，可以根据当前的磁路饱和状态而在线修正电感参数，从而将非线性方程线性化，降低控制器的复杂度；考虑到电动汽车在起动和加速超车时需要电机有最大转矩输出，本文讨论在逆变器容量一定和电池供电能力有限的情况下电机最大转矩输出问题；推导了异步电机扩展降阶、离散卡尔曼滤波方程在线辨识转子时间常数和转子磁通，用于实现高性能的矢量控制算法，并给出了仿真结果；推导出了电动汽车恒转矩给定的闭环回馈制动系统，实现了电动控制模型和制动模型的统一，而且结合铅酸电池最大充电电流的要求，为制动转矩在线给定建立了数学模型；设计了基于双DSP系统的高性能矢量控制器软硬件框图，并以大量实验数据说明矢量控制在电动汽车应用的实际应用状况。

Thereafter, the Engineer shall, within 28 days after receiving a Statement and supporting document s, issue to the Employer an Interim Payment Certificate which shall state the amount which the Engineer fairly determines to be due, with supporting particulars.

此后，在收到承包商的报表和证明文件后28天内，工程师应向雇主签发期中支付证书，列出他认为应支付承包商的金额，并提交详细证明资料。

Thereafter, the Engineer shall, within 28 days after receiving a Statement and supporting documents, issue to the Employer an Interim Payment Certificate which shall state the amount which the Engineer fairly determines to be due, with supporting particulars.

此后，在收到承包商的报表和证明文件后28天内，工程师应向雇主签发期中支付证书，列出他认为应支付承包商的金额，并提交详细证明资料。

Patients are dosed intravenously on Days 0, 14 and 28, then every 28 days thereafter for the duration of the study.

病人的剂量静脉注射于0天，14日和28日，然后每28天此后的学习期限。

Equity method is a method of accounting whereby the investment is initially recorded at its cost and the carrying amount of the investment are adjusted thereafter for changes in the investor's share of owners' equity of the investee enterprise.

公平法是一种会计法，即投资是最初记录在其成本和投资的账面价值的调整，在此后的变化，投资者'份额业主'的股权投资企业。

The other guests thereafter began jocularly speaking of "going to Lady Louisa."

Lavatory在飞机、火车上用得比较多，其他地方就比较少。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。