调速

Pass the function that study the core controller MCS89C51 and application, constituted to be adjusted by a keyboard/ showing controller 8279, arithmometer/timer 8253 and from ZSZ-02 as mainly controlling the slice of electrical engineering soon system.

核心控制器的主要组成由89C51单片机、键盘/显示芯片8279、可编程计数器/定时器8253以及自整角机角度转换器ZSZ-02；直流电机驱动电路由4只三极管及4只可控硅组成，完成直流电机的调速及正反转。

In this report,a mathematical model of armature controlled dc motor is introduced,with specified parameters.

本文首先介绍了双闭环直流电机调速系统的数学模型，并为之设置了具体参数。

Say for the system requested to be smooth in certainly the speed-governing system, adjust armature and voltage is the best way.

对于要求在一定范围内平滑调速的系统来说，以调节电枢电压的方式为最好。

Introduces a type of special honer repairing hydraulic support cylinder using coal mine and other mine,main discuss its composing of hydraulic system,working principle,technics process,electrical control system and relation about each other lock moment,beeline move forword timing method,and its characteristic, attainability purpose using this machine.

介绍了一种用于煤矿或其他矿山的单体液压支柱维修专用珩磨机，重点讨论了该机的液压系统组成、工作原理、工艺过程、电气控制系统、运动互锁关系、直线进给调速方法以及特点，采用该机可达到的目的。

The thesis first probably explains BrushLess Direct Current Motor, and discusses the related control methods, explains the background and Meaning of back electromotive force which is used in the thesis.

本文首先对无刷直流电机进行了概述，并对其相关控制方法进行了讨论，说明本文所采用反电动势法的背景和意义；接着论述了无刷直流电机基本组成环节、基本工作原理、运行特性和传递函数，然后是详述本文研究的重点：基于反电动势法的MATLAB调速系统的仿真以及基于反电动势法的DSP控制系统的实现。

On the base of roundly analyzing and studying the running mode of the sensorless BLDCM, we explain theories and realizable methods of detecting back electromotive force, phase verdict and phase compensation in detail.

在全面分析研究了无位置传感器无刷直流电动机运行方式的基础上，细致阐述了反电势过零检测、相位判断及相位补偿的原理及实现方法，并且为了在较宽的范围内提高BLDCM的调速性能，采用了数字式转速闭环控制。

The thesis first probably explains BrushLess Direct Current Motor, and discusses the related control methods, explains the background and Meaning of back electromotive force which is used in the thesis.Then the thesis expounds the basic component parts,the basic running principle,the running characteristic and transfer function of the BLDCM.And then the thesis detailedly dissertates its research pivot: the simulation of BLDCM system in MATLAB based on the method of Back-EMF and the control system of Digital Signal Processor based on the method of Back-EMF.

本文首先对无刷直流电机进行了概述，并对其相关控制方法进行了讨论，说明本文所采用反电动势法的背景和意义；接着论述了无刷直流电机基本组成环节、基本工作原理、运行特性和传递函数，然后是详述本文研究的重点：基于反电动势法的MATLAB调速系统的仿真以及基于反电动势法的DSP控制系统的实现。

It transfers the slip power to mechanical power and then feed the power back to the shaft of the motor, or directly feeds the slip power to the alternating current net, so as to ensure the speed regulation a higher performance and higher power utilization ratio.

它可以把转差率转变为机械功率反馈回电动机机械轴上，或把转差功率反馈至交流电网中，使得具有良好的调速性能和较好的功率利用性。

The plant shall be entirely suitable for base load and it is expected to be able to participate in system frequency regulation by free governor action.

该设备应能完全适应基本负荷，且能通过自由型调速器动作参与系统的频率调整。

It mainly introduced the development of AC regulating speed system and the basis idea of Vector control and how to use SIMULINK in software MATLAB and establishing asynchronisms math model.

本文介绍了交流调速系统的概况、矢量控制的基本概念、MATLAB软件中SIMULINK仿真工具的使用以及建立异步电动机的数学模型。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。