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That system could collect simulation signals from four routes ( the height of the combine harvester, the grain humidity, the grain temperature and the grain flux) at real time, digital signals from two routes (field speed and rotate speed of grain elevator ) and GPS differential signals.
该系统能够同时集割台高度、谷物水分、谷物温度和谷物流量等4路模拟信号以及地速和升运器转速等2路数字信号和GPS差分信号，并且能够每隔1秒钟向CF卡存储一次信息。
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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。
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Aiming at this problem, firstly, calculation formulae of utilization adhesion coefficient after installment of retarder were detailedly deduced. Then braking force distribution ratio , braking intensity and vehicle full-load parameters were taken as variables and inequalities which are about of retarder braking force , braking force distribution ratio , braking intensity and vehicle full-load parameters were established based on the ECE Law. The range of corresponding to any , as well as the most optimal matching between them, were obtained by solving these inequalities.
为此，论文在推导了安装缓速器后前、后轴利用附着系数、的计算公式基础上，基于ECE法规要求，以制动力分配比、制动强度及车辆满载参数为变量，建立了缓速器制动力关于车辆制动力分配比、制动强度和满载参数之间的多元不等式组，通过求解多元不等式组获得缓速器制动力与制动力分配比之间的取值关系，并从中得到二者之间的最优匹配。
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The enterprise designs and produces over 8 series and 60 specifications of products, including mechanical crimpers series, mechanical cable cutter series, cable strippers series, Bolt cutter series, insulation cleanser series, low-voltage powerful electric solding iron series, and hydraulic tools series, etc.
E4F55 系列机械压线钳，系列机械式线缆剪，系列剥线钳，系列绝缘清洗剂，系列低压大功率电烙铁，高低压非晶磁性槽泥，系列液压工具（包括双速液压钳、分木式液压钳、液压紧线器、液压开孔器等）共八大系列六十多种型号规格的产品，深受市场的欢迎。
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Theoretical analysis proved that inequalities perfectly described the optimal matching problem between and for a given full-load vehicle.
分析说明：对于给定满载负荷的汽车，不等式组完善地解决了缓速器制动力与制动力分配比之间的优化匹配问题。
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The main parts of the old transmitter is not required to alter, but single/dual polarimetric switch, power splitter, and phase shifter should be added to the chains after the output of a transmitter.
发射机主体部分在原多普勒水平单偏振模式下不作改动，在速调管放大器高频输出之后增加单/双线偏振转换开关、功分器和移相器。
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DC motor complex large-scale three-phase power transformer deep-trough three-phase asynchronous motor DC motor DC motor single-phase squirrel-cage induction motor.Three-phase commutator motors, single-phase motor power sub-phase squirrel-cage three-phase asynchronous electric double mine explosion-proof motor with squirrel-cage three-phase asynchronous motor rotor cup AC servo motor drives three-phase asynchronous motor principle of rotating magnetic field Generation and transmission of three-phase induction motor winding three-phase stepper motor 165mm Three-phase three-phase synchronous motor stepping motor JFB power generator rotor rectifier type AC synchronous motor DC servo motor three-phase current rotating magnetic field of teaching instrument Wound Three-phase alternator motor 160 rats of three-phase permanent magnet generator cage induction motor Synchro Motor medium-sized three-phase power transformer
直流复励电动机大型三相电力变压器三相异步深槽式电动机直流电动机直流电机单相异步鼠笼式电动机三相整流子电动机单相电动机电源分相器三相异步双槽鼠笼电机矿用防爆电动机三相异步鼠笼式电动机杯形转子交流伺服电动机三相异步电动机调速原理旋转磁场的产生与变速三相绕线式异步电动机 165mm三相步进电机三相同步电动机 JFB型硅整流发电机转子供电交流同步电机直流伺服电动机三相电流旋转磁场示教仪绕线式电动机三相交流发电机 160型永磁发电机三相鼠笼异步电动机自整角电机中型三相电力变压器
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gov：调速器
为了理解电压稳定性的机理和寻求较快的分析方法,利用短期现象(如与同步发电机及其自动电压调节器(AVR)和调速器(GOV)、感应电动机、高压直流元件和静止无功补偿(SVC)等相关的现象)与长期现象(如与变压器分接头调节、发电机的