讨论

The thesis contains five chapters. The first chapter summarizes the development and research of switched reluctance drive, discusses the main research direction, and explains the main work in this paper. In chapter 2, hardware system which includes the design of power converter and various control circuit is discussed. TMS320LF2407 DSP is used to design the hardware circuits of SRM control system, and design details including the current detection, position sensing, fault protection, speed detecting, keyboard and display etc. are provided. Because of the full use of the abundant peripheral resources of DSP, it comes to the aim simplifying the circuit structure and heightening the reliability. In chapter 3, the application of neural network on SRM control system is introduced, a new the application of neural network and the method of sampling is proposed and a simulation system based on Matlab/Simulink is established. Chapter 4 discusses the routine designing issue. Because the modularized programming method is adopted, and multi-interrupt processing technique is used, operation efficiency of the control software is highly raised. At last, the foregoing SRM control system is tested. Speed adjustment is realized, and other targets on the research and design of SRM control system are reached, which establishes a good foundation for further research.

本文共分五章，第一章概述了开关磁阻电机调速系统(Switched Reluctance Drive，简称SRD)及其发展和研究现状，论述了其主要研究方向，并说明了本文的主要工作；接下来的一章主要讨论了SRM的硬件系统，主要包括功率变换器的设计和各种控制电路的设计，本文以TMS320LF2407为核心设计了开关磁阻电机控制系统硬件电路，给出了包括电流检测、位置检测、故障保护、测速电路及键盘和显示电路等部分电路的详细设计，充分利用了DSP的丰富外设资源，达到了简化电路结构、提高运行可靠性的目的；第三章介绍了人工神经网络在开关磁阻电机控制系统中的应用，提出了一种新的应用方式(利用GPFN神经网络调节PI参数)以及如何采取样本，搭建了基于Matlab/Simulink的仿真系统；在第四章中，讨论了开关磁阻电机控制软件的设计，采用模块化编程方法，采用基于多中断的控制程序，提高了控制软件的效率；最后，对所设计的开关磁阻电机控制系统进行了实验，实现了电机调速，达到了开关磁阻电机控制系统研究和设计的预期目标，为更近一步研究打下了基础。

They can also provide for a more structured discussion, especially on active talk pages where discussions may stretch into the hundreds of kilobyte s.

他们能并且提供一次被构造的讨论，特别是在讨论也许舒展入上百千字节的活跃谈话页。

Saturday's emergency talks in Geneva were called by Kofi Annan to discuss a US-drafted resolution on Iraq, in a bid to reach a consensus on how best to stabilize and rebuild Iraq.

周六在日内瓦举行的紧急会议，是由安南呼吁召开的，就美国起草的一份伊拉克解决方案进行讨论。希望能够讨论出一个最佳的稳定和重建伊拉克的方案。

We are in discussions from a logistics point of view to look at seaborne aid in one form or the other where floating warehouses with landing craft etc.

我们正在从后勤方面讨论该问题，讨论某种形式的海上救助，如配有登陆艇的飘浮的仓库等。

The discussion will focus on the discourse on feminism, lesbianism and lesbian rights within the women's movement at an Asian continental level rather than at a national level.

本文讨论的重点是女权运动中的女性主义话语和女同性恋行为及权力话语。讨论是基于一个亚洲大陆的视角，而不是一个国家的视角。

By 〓,weconstruct testing statistic of change point and derive the limit distribution of thetesting statistic.

Gombay and 〓(1998)在上述结果的基础上，讨论了变点的估计问题，得到了变点估计的渐近分布，并且讨论了变点估计的相合性。

The effects of the content of carbon black and dissolved polyester on volume resistivity and linear density of the fibers have been discussed.

研究和讨论了涂覆液中碳黑和聚酯含量对纤维体积比电阻及线密度的影响，并对所得纤维力学性能、耐水洗性能及耐热性能等进行了讨论和分析。

By means of the C0 - semigroup theory of bounded linear operators in functional analysis we prove that thissystem has a unique nonnegative solution.

以往大多数文献都讨论维修系统的稳态解的情况，本文利用泛函分析中算子半群的方法研究了这类数学模型的非负动态解的存在唯一性。第三部分对积分半群和余弦算子族解析性的讨论。

In chapter 3, the problems of constructing finite-dimensional functional linear invari-ant spaces under a given differential operator as well as an inverse problem concerning thedescription of all operators possessing a given invariant space are investigated.

第三章中讨论了基于算法产生的两个互逆问题，即(1)构造在已知的微分算子下不变的有限维线性函数空间；(2)讨论拥有相同线性不变空间的微分算子的一般表达式。

There is problem of some of netizen discussion Tianjin on our forum for example, after Tianjin station just was repaired very big very beautiful, but the management of doorway taxi is very debatable, a lot of netizens reflect this problem, some netizens send a photograph to say to be experienced his personally, said a lot of, discuss very livelily.

比如说我们论坛上有些网友讨论天津问题的，天津站刚修完之后非常大非常漂亮，但是门口出租车的管理很成问题，很多网友反映这个问题，有的网友发照片说自己的亲身感受，说了很多，讨论得非常热闹。

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。