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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。

On such day: there develops, occurs, exists or comes into force any event whereby in the reasonable opinion of the Underwriter, the success of the Open Offer or the business or financial condition and/or prospects of the group would, might be or is likely to be adversely affected or which makes it inadvisable or inexpedient to proceed with the Open Offer; or there comes to the notice of the Underwriter or the Underwriter shall have reasonable cause to believe that any of the undertakings or other obligations expressed to be assumed by or imposed on the Company under the underwriting agreement have not been complied with in any material respect; or there comes to the notice of the Underwriter or the Underwriter shall have reasonable cause to believe that any of the representations or warranties given by the Company under the underwriting agreement was untrue, incorrect, misleading or inaccurate in any material respect which adversely affect the success of the Open Offer; which in the reasonable opinion of the Underwriter: is or may or will be or is likely to be adverse to, or prejudicially affects, the business or financial or trading position or prospects of the group taken as a whole; or is or may or will be or is likely to adversely affect the success of the Open Offer and/or makes it impracticable, inexpedient or inadvisable for any part of the underwriting agreement and the Open Offer to be performed or implemented as envisaged; or make or will or is likely to make it impracticable, inexpedient or inadvisable to proceed with the Open Offer or the delivery of the convertible non-voting preference shares on the terms and in the manner contemplated by the Prospectus or the underwriting agreement.

Samson Paper Holdings Limited Provisional Allotment Account 倘于接纳可兑换无投票权优先股份及付款的截止时间后两个营业日下午六时正前任何时间出现下列事件，则公开发售包销商Quinselle Holdings Limited可于该日期下午六时正前任何时间向本公司发出书面通知以终止包销协议：因任何事件之出现、发生、存在或生效而令包销商合理认为将会、可能或极大机会对公开发售能否顺利进行或本集团之业务或财政状况及╱或前景构成不利影响，或致使进行公开发售实属不合理或不合宜；或包销商注意到或包销商有合理理由相信本公司并无于所有重大方面遵守根据包销协议列明须承担或获委予之任何承诺或其他责任；或包销商注意到或包销商有合理理由相信本公司根据包销协议作出之任何陈述或保证于任何重大方面属失实、错误、误导或不准确而对公开发售能否顺利进行造成不利影响；而包销商合理认为：经已或可能或将会或大有可能对本集团整体业务或财政或经营状况或前景造成不利影响或损害；或经已或可能或将会或大有可能对公开发售能否顺利进行构成不利影响及╱或使持续进行使包销协议的任何部份或公开发售的进行或落实为不实际、不合适或不合宜；或按发售章程或包销协议拟订之条款及方式持续进行公开发售或寄发可兑换无投票权优先股份导致、将为或大有可能为不实际、不合适或不合宜。

The author put forward the following opinions: civilian sport refers to non-official sports activities de-veloped among the masses; it is not provided with the characteristic of being passed on and continued generation by generation, can occur in a certain period, and disappear in a certain period; folk sport refers to sports activities closely related to civilian customs, mainly existing in civilian celebrative activities, religious activities and ritual ac-tivities; it is a form of sports culture passed on and continued generation by generation, provided with the character-istics of collectivity, inheritability and mode; national sport is divided into general type and special type; general na-tional sport refers to a special culture that once historically reflected and carried common psychological capacity and culture of a nation and is enjoyed by that nation; Chinese national sport, ancient Grecian sport and ancient Egyptian sport are specific forms of presentation of national sport; special national sport refers to a sports cultural form that is exclusively owned by a nation in modern time, reflects and carries common psychological capacity and culture of that nation, and is created and enjoyed by that nation; traditional sport refers to a stable sports culture that is historically inherited and gradually formed by a nation in practical activities in a long history, embodied in all as-pects of sports cultural activities and passed on generation by generation.

摘 要：民间体育是指非官方的在民众中开展的体育活动，它不具有世代相传和延续的特点，可以在某一时期出现，又可能在某一时期消失；民俗体育是指那些与民间风俗习惯关系密切，主要存在于民间节庆活动、宗教活动、祭祀活动中，是一种世代传承和延续的体育文化形态，具有集体性、传承性和模式性特点；民族体育有广义和狭义之分，广义民族体育指曾在历史上反映和承载着一个民族共同心理素质、共同文化，为该民族享用的一种特殊文化，中华民族体育、古希腊体育、古埃及体育都是民族体育的具体表现形式，狭义民族体育是指近现代一个民族所独有的，反映并承载该民族共同心理素质、共同文化并为该民族所创造和享用的一种体育文化形态；传统体育是指由历史沿袭下来，是民族在漫长的历史实践活动中积累而成的稳定的体育文化，体现在健身、养生、娱乐思维方式、行为方式等体育文化活动的各个方面，并通过社会心理结构及其它物化媒介(如棋盘、武术器械、文献典籍等)得以世代相传。

The conclusions can be drawn through numerical simulation: The hydrate-forming region becomes small with increasing circulation rate and inhibiter concentration, and it is possible to make the hydrate-forming region away from sea floor by increasing circulation rate and inhibiter concentration, thus preventing blowout preventer lines from hydrate plugging; the decrease in gas volume fraction in the annulus due to hydrate formation reduces pit gain, which can delay the detection of well kick; the possibility of hydrate presence at a relatively low gas production rate is much greater than that at a relatively higher production rate; the bottom hole pressure is affected little by hydrate phase transition, and it is allowable not to consider hydrate phase transition when the bottom hole pressure is calculated; shut-in casing pressure cann't truly reflect gas kick due to hydrate formation and the situation is getting worse with time

模拟计算结果表明：溢流期间，天然气水合物的生成区域会随着循环流量的增大或抑制剂浓度的提高而减小，可通过增大流量和抑制剂浓度使水合物的生成区域脱离海底，减小防喷器管线被堵塞的危险；水合物的生成使环空中气体体积分数降低，泥浆池增量减小，给溢流检测带来延迟；当检测到有气侵发生时，水合物藏分解速率比较小时，井筒中生成水合物的可能性要比分解速率大的情况下更为严重；水合物相变对井底压力的影响较小，在工程中计算井底压力时可以忽略；由于天然气水合物的生成使得关井套压值不能真实反应气侵情况，而且随着时间的增加情况会更加严重。

Although China is anancient country, you are also confident in the future, is committed to next generation can dobetter than this generation, in addition to your growing economy, we are in line with China inscience and research with regard to the power input , including the construction of infrastructureand the use of technology, China is the world's largest country in the use of Internet technology,that is, we are very pleased that the Internet is today part of the activities, the country also hasthe largest mobile telephone network, for new investment to maintain continued growth, andresponding to climate change, there is new investment, I also hope that China would strengthencooperation in this area.

虽然中国是一个古老的国家，你们也是充满信心展望未来，致力于下一代能够比这一代做的更好，除了你们不断增长的经济之外，我们很配合中国在科学和研究方面所投入的力量，包括建设的基础设施和使用的技术，中国是世界上使用互联网技术最多的国家，这就是我们很高兴互联网是今天活动的一部分，这个国家也拥有最大的机动电话网络，对新的投资保持继续增长，和应对气候变化方面有新的投资，我也希望两国加强这方面的合作。

It is not even discussible, groupable into words; it is not even endless, in fact it is not even mysterious or inscrutably inexplicable; it is what is; it is that; it is this.

它甚至不可讨论，组织不成语言。它甚至不是无尽的，事实上它甚至不神秘不高深莫测难以理解。它是它是，它是这，它是那。

In chapter five, the application of the gray/depth image in computer image generation is discussed. A new method based on real time insert in three dimensional space is introduced. It is different with normal graphics and image method. Its property is animation scene and invariable generation time. Two simplified mode and a general mode of space insert is analysis. With all kinds of relativity, the fast increase algorithms are presented. Computer simulation is executed and condition of real time is estimated.

在第五章中，讨论了灰度/深度图象在计算机图象生成的应用，提出了用实时三维空间内进行CIG的新方法，它不同于常规的图形方式和图形方法，它具有生成画面逼真度高、运算量固定，仿真内容可变的特点，具体分析了三维空间内插的一般形式和两类常见退化形式，充分利用内在和相关的加速技术，给出了快速增量算法并作了模拟实现，估计了实时条件要求的计算量。

From this viewpoint, we fulfilled to control the step-size with the curvature of integral curve. The step-size is smaller in calculating these points that the value of the curvature is bigger and the step-size is bigger in calculating these points that the value of the curvature is smaller, which is rather reasonable choice and is also a creative point in this paper.

从这个想法出发，在文中实现了以积分曲线的曲率控制步长大小的作法，在曲率大的点步长小，而在曲率小的点步长大，这是非常合理的选择，也是本文的一个创新点。

In the computation of aerodynamic forces, the present work is based on the work of Morino et al., but the following aspects are improved:(1) In computing the steady transonic aerodynamic load, the steady transonic nonlinear integral equation is solved by relaxation-iteration method in this thesis, instead of solving the time dependent transonic nonlinear integral equation, so that the computing time is saved greatly;(2) The influence coeifficients represented by volume integral are transformed to surface integral by using the Gaussian Theorem, so the analytical form of these coeifficients can be obtained and this leads to be more convenient to analyse and compile computer program;(3) The shock capturing method is used in every time step in present work, no shock moving term is added in the integral equation, so that it is more convenient and simpler to treat.

在气动力计算方面，本文基于Morino等人的工作，作了如下几方面的改进：（1）在计算定常跨音速流场（作为非定常绕流计算的初场）时，本文采用松驰迭代法直接求解跨音速定常非线性积分方程，而不是采用时间相关法求解非定常非线性积分方程，这样大大节省了计算机时；（2）将以体积分形式出现的影响系数化为面积分，并获得解析公式，这样便于分析和编写程序；（3）对运动的激波，本文通过在每一个时间步长上采用激波捕捉法而得到，而不是在积分方程中附加激波运动项，因而处理起来简单方便得多。

A mathemetical model of magnetic field in electromagnetic separation of inclusions from molten aluminum under rectangle coil and 50Hz current is presented according to the magnetic vector potential integral equation and the basic theory of magnetohydrodynamics. The magnetic field distribution in the gap of coils is simulated by the model and the actual magnetic field distribution also is measured. The experimental results show that the magnetic field distribution in the gap of coils is uniform and is consistemt with the model simulation. The magnetic field designed accord the simulated result is proved suitable in the practice.

摘 要：根据电磁流体力学的基本理论，利用矢量磁位积分，建立了在采用矩形电磁线圈和工频电源的条件下电磁分离铝熔体中夹杂的电磁场数学模型，模拟计算了电磁感应线圈气隙中的磁场分布状态，同时对制做的感应线圈的实际磁场进行了测量模拟计算磁场的分布状态与实际磁场的测量结果基本一致，都表明在电磁感应线圈气隙中磁场分布均匀，可以进行分离铝熔体中的非金属夹杂。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。