第三

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。

Chapter three and four are the keystone of this paper.

第三章和第四章是本文的重点章节。

One lacquey carried the chocolate-pot into the sacred presence; a second, milled and frothed the chocolate with the little instrument he bore for that function; a third, presented the favoured napkin; a fourth he of the two old watches

第一个侍从要把巧克力罐捧到神圣的大人面前；第二个侍从要用他带来的专用小工具把巧克力磨成粉打成泡沫；第三个侍从奉上大人喜好的餐巾；第四个再斟上巧克力汁。

At the end of the second round of pit stops, on lap 48 Kimi was up to third position.

第二次进站加油后，雷克南在第48圈时超至第三位。

It is an unbalanced work, the opening Largo much longer than the remaining two movements, which can seem as mere appendages.

这样的结构可能使人想起古典的四个乐章的交响曲中的第二，第三和第四乐章的排列。

Article 26 The deduction of additional expenses mentioned in Section 3 of Article 6 of the Tax Law means deduction of the expenses stipulated by Article 28 of the Regulations on the basis of deduction of RMB800 each month.

第二十六条税法第六条第三款所说的附加减除费用，是指每月在减除800元费用的基础上，再减除本条例第二十八条规定数额的费用。

Article 34 When taxpayers apply in accordance with Article 7 of the Tax Law for deduction of the amount of individual income tax paid already outside China, they shall present the original tax payment receipt issued by the tax authorities abroad.

第三十四条纳税义务人依照税法第七条的规定申请扣除已在境外缴纳的个人所得税税额时，应当提供境外税务机关填发的完税凭证原件。

Article 33 When taxpayers apply in accordance with Article 7 of the Tax Law for deduction of the amount of individual income tax paid already outside China, they shall present the original tax payment receipt issued by the tax authorities abroad.

第三十三条纳税义务人依照税法第七条的规定申请扣除已在境外缴纳的个人所得税税额时，应当提供境外税务机关填发的完税凭证原件。

Johnny Damon, the new leadoff batter, started scoring rallies in the third and sixth innings.

大门，生鲜到位的开路先锋，在第三局和第六局展开得分场景。

Article 35 The term "leaseback business" as mentioned in Article 19 of these Measures refers to a form of finance lease in which the leaser and the supplier is the same person.

第三十五条本办法第十九条所称售后回租业务，是指承租人和供货人为同一人的融资租赁方式。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失