毕业论文--基于simulink的直流调速系统的设计与仿真.doc

基于Simulink的直流调速系统的设计与仿真 摘要 有着十分必要和重要的意义。 首先阐明了该课题研究的目的与意义 关键词： DC SPEED CONTROL SYSTEM BASED ON SIMULINK DESIGN AND SIMULINK Abstract As todays electric drive speed control system automatic control system of the most widely used system, with the production process, and continuously improve product quality requirements and production growth, making more and more production machinery required to achieve automatic speed . Current control system has entered the computer age, has been achieved in many areas of intelligent control. DC drive system with excellent speed characteristics, smooth speed, wide range, high precision, large overload capacity, good dynamic performance, easy to control and good starting and braking performance, etc., can meet the production process automation system each different kinds of specific operational requirements, the study DC speed control system has a very necessary and important. In this paper, DC speed control system as the main research object, first to clarify the purpose and significance of the research, specifically describes the open-loop, single-loop and double-loop DC speed control system design and build Matlab / Simulink simulation model of the process, too the speed and current simulation waveform and the ideal starting speed and current waveforms do comparison. Analyze and compare the open-loop, single loop and double loop advantages and disadvantages. Experimental results show that the simulation speed performance with consistent theoretical derivation. Keywords: DC speed control system;Open-loop system;Single-loop system;Double-loop system 目录 摘要 I Abstract II 1绪论 1 1.1 课题背景 1 1.2概述 1 1.3论文内容 2 1.4本章小结 2 2直流调速系统的理论基础 3 2.1 Matlab/Simulink仿真软件 3 2.2 直流调速的理论基础 3 2.3 开环系统的电气原理 6 2.4 单闭环系统的电气原理 7 2.5 双闭环系统的电气原理 8 2.6 本章小结 8 3 调速系统的建模与仿真 8 3.1 开环调速系统的建模与仿真 9 3.1.1 开环建模过程 9 3.1.2 开环系统的仿真 12 3.2 单闭环调速系统的建模与仿真 14 3.2.1 单闭环系统的建模 14 3.2.2 单闭环系统的仿真 16 3.3 双闭环调速系统的建模与仿真 18 3.3.1 双闭环系统的建模 18 3.3.2 双闭环系统的仿真 20 3.4