4kw以下直流电动机的不可逆调速系统.docVIP

毕业设计用纸 共 NUMPAGES 36页 第 PAGE 34页 中文摘要 如今直流电机已成为人类生存和发展极其重要的一部分，因而有必要说明对直流电机的研究很有必要。 直流电动机具有良好的起动、制动性能，宜于在大范围内平滑调速，在许多需要调速或快速正反向的电力拖动领域中得到了广泛的应用。从控制的角度来看，直流调速还是交流拖动系统的基础。 本文主要研究了4kw以下直流电动机的不可逆调速系统的原理，提出了调速系统的方案即主电路通过采用晶闸管三相全控桥整流电路供电方案，控制电路由集成电路来实现，系统中有速度调节器、电流调节器、触发器和电流自适应调节器等。 在确定调速系统的方案后还他做了以下几个步骤：1主电路设计与参数计算2触发电路选择.3、双闭环的动态设计和校验，然后设计了系统的硬件与软件部分.最后通过仿真试验来确定了不可逆调速系统的稳定性与可靠性。 论文最后给出了实验结果和波形分析。结果表明了该不可逆调速控制系统具有良好的动静态调速性能，验证了系统设计的有效性和可行性。 关键词：晶闸管、调节器、触发器、单片机、CodeWarrior IDE。 ABSTRACT Now DC has become extremely important for human survival and development part, which is necessary to explain the study of the DC motor is necessary. DC motor has a good start, braking performance, it is appropriate in a wide range smooth speed control, speed or faster in many positive and negative need to drag the field of electricity has been widely used.From the control point of view, DC drive or AC drive system basis. This paper studies the 4kw the following non-reversible DC motor speed control system theory, put forward the proposal that the speed control system the main circuit through the use of three-phase fully controlled thyristor bridge rectifier circuit power supply program, the control circuit consists of integrated circuits to achieve,system has the speed regulator, current regulator, triggers, and current adaptive regulator and so on. Program in determining the speed control system even after he made the following steps: a calculation of the main circuit design and parameter selection .3 2 trigger circuit, double-loop dynamic design and verification, in the middle draw a DC speed control system electricalschematic general drawing and finally through the simulation to determine the non-reversible speed control system stability and reliability. Finally, the paper experimental results and waveform analysis.The results show that the non-reversible speed control system has good static and dynamic speed performanc