电气工程综合设计参考2015.12探析.doc

绪 论 在电气时代的今天，电动机在工农业生产、人们日常生活中起着十分重要的作用。直流电机是最常见的一种电机，具有良好的起动、制动性能，宜于在宽范围内平滑调速，在许多需要调速和快速正反向的电力拖动等各领域中领域中得到了广泛的应用。因此研究直流电机的控制和测量方法，对提高控制精度和响应速度、节约能源等都具有重要的意义。电机调速问题一直是自动化领域比较重要的问题。不同领域对于电机的调速性能有着不同的要求，因此，不同的调速方法有着不同的应用场合。 本文设计分析直流双闭环的组成，设计直流双闭环的系统电路图，同时采用采用工程设计的方法对直流双闭环的转速和电流两个调节器进行设计。因为电流调节器是内环，因此首先设计电流调节器，对其进行必要的变化和近似处理，电流环设计完后，把电流环等效成转速环的一个环节进行处理，从而设计转速环。同时双闭环直流调速系统的设计进行了分析及其原理进行了一些说明，介绍了其主电路、检测电路的设计，并介绍电流调节器和转速调节器的设计和一些参数选择、计算，使其设计参数要求的指标。 关键词：直流调速 双闭环 原理图 工程设计 参数整定 触发电路 目 录 1、设计任务与分析·····································································1 1.1、设计内容······································································1 1.2、设计要求······································································1 1.3、设计方案综合分析······························································1 2、双闭环直流调速系统总体设计·························································3 2.1系统快速启动过程类比分析························································3 2.2双闭环直流调速系统整体框图······················································4 3双闭环直流调速系统电路设计···························································6 3.1系统主电路设计··································································6 3.2系统保护和整流电路的设计························································6 3.3系统触发电路的设计······························································7 3.4转速检测电路的设计······························································8 3.5电流检测电路的设计······························································8 4双闭环直流调速系统调节器设计·························································9 4.1电流调节器······································································9 4.1.1电流调节器设计······························································9 4.1.2电流调节器结构的选择························································9 4.1.3电流调节器的参数···························································10 4,2转速调节器·····································································11 4.2.1转速调节器设计··········