摘要由于直流电机具有良好的启动制动和调速性能，现已广泛用于工业、航天领域等各个方面。以H桥电路作为驱动器的功率驱动电路可实现直流电机的四象限运行，包括正转、正转制动、反转、反转制动。在实时检测和自动控制的电力电子系统中，电动机往往是作为一个核心部件来使用，仅电力电子方面知识是不够的，还应根据具体硬件结构以及针对具有应用对象特点的软件结合加以完善。70360

直流电动机在日常的生活和生产中应用十分广泛。在生产中经常要求电动机能正、反转运行，改变直流电动机转向主要有改变电枢电流方向和改变励磁方向两种方法，其中电枢电流方向可逆的方案响应快、应用普遍。这次课程设计目的主要是在完成电动机原理和电力电子课程综合运用所学的知识完成一个系统的设计。利用Simulink对系统进行了各种参数给定下的仿真，同时查看仿真波形，以此验证设计的调速系统是可行的。

该论文有图36幅，表1个，参考文献22篇。

毕业论文关键词：直流电动机  脉宽调制  可逆调速  仿真 

Modeling and Simulation of DC Reversible Speed Regulating PWM Control System

Abstract Because DC motor has a good starting and braking and speed performance. It has been widely used in industrial, aerospace fields. With the development of power electronic technology, PWM control technology has high control accuracy, fast response, wide speed range and low power consumption, and to the H bridge circuit as the drive power drive circuit, can realize four quadrant operation of the DC motor,  including turning, braking in turn, reverse, reverse braking, has been widely used in the modern DC motor servo system. 

 DC motor is widely used in daily life and production. In the production often requires motor positive, reverse operation, changing DC motor steering are mainly two methods of armature current direction and changing the excitation direction change and the direction of the armature current reversible fast response, universal application. In this paper, starting from the working principle of DC motor established the mathematical model of the double closed loop DC speed control system, and a detailed analysis of the system's principle and the static and dynamic performance. Then according to the principle of automatic control, the design parameters of double closed loop speed regulation system were analysis and calculation. The system various parameters using simulink simulation under a given number, while viewing the simulation waveform, in order to verify the feasibility of the design of the speed control system.

Key Words: DC motor  PWM  Reversible Speed Regulation  Simulation

  目  录

摘  要 I

Abstract II

目  录 III

1 绪论 1

1.1 引言 1

1.2 背景及意义 1

1.3 本论文设计的主要内容 1

2 设计方案的论述 3

2.1 系统框图 3

2.2 系统的组成 3

2.3 直流PWM可逆调速系统 16

3 直流PWM可逆调速系统设计 19

3.1 PWM控制模块设计 19

3.2 电流调节器 21

3.3 转速调节器 22

4 H桥PWM直流可逆调速系统的仿真分析及结果