机电传动课程设计-全自动双面铣的电气控制系统设计精选.docxVIP

目录正文··························································1设计任务及要求···············································1总体方案设计·················································42.1控制要求的分析···············································42.2 液压控制回路中电磁阀被控逻辑表达式··························53.电气原理图设计··············································53.1主电路设计····················································53.2控制电路设计··················································63.3辅助电路设计··················································84.电机元件选型·················································94.1选型依据及主要参数计算········································9 4.1.1电动机的选型··············································9 4.1.2熔断器的选型··············································9 4.1.3熔断器的选型·············································10 4.1.4交流接触器、中间继电器与时间继电器的选型··················10 4.1.5照明与显示灯的选型·······································10 4.1.6变压器的选型·············································10 4.1.7按钮及刀开关的选型········································114.2元件明细表···················································125.接线图设计···················································13小结·························································13参考文献····················································13全自动双面铣的电气控制系统设计正文机电传动（又称电力传动或电力拖动）是指以电动机为原动机驱动生产机械的系统之总称。它的目的是将电能转变为机械能，实现生产机械的启动、停止以及速度调节，满足各种生产工艺过程的要求，保证生产过程正常运行。在现代工业中，为了实现生产过程自动化的要求，机电传动不仅包括拖动生产机械的电动机，而且包括控制电动机的一整套控制系统。也就是说，现代机电传动是和由各种控制元件组成的自动控制系统紧密地联系在一起的，所以，本课程被命名为《机电传动控制》（也称为《机械电气控制》）。从现代化生产的要求出发，机电传动控制系统所要完成的任务，从广义上讲，就是要使生产机械设备、生产线、车间甚至整个工厂都实现自动化；从狭义上讲，则专指控制电机驱动生产机械，实现产品数量的增加、产品质量的提高、生产成本的降低工人劳动条件的改善以及能源的合理利用。例如，一些精密机床要求加工精度达百分之几毫米，甚至几微米；重型镗床为保证加工精度和控制表面粗糙度，要求能在极慢的稳速下进给，即要求能在很宽的范围内调速；轧钢车间的可逆式轧机及其辅助操作频繁，要求在不到一秒的时间内疚能完成从正转到反转的过程，即要求能迅速地启动、制动和反转；对于电梯和提升机，要求启动和制动平稳，能并能准确地停止在给定的位置上；对于冷、热连轧机以及造纸机的各机架或各部分，要求它们的转速保持一定的比例关系，以便进行协调运转；为了提高效率，要求对由数台或数十台设别组成的生产自动线实行统一控制和管理。诸如此类要求，都是靠电动机及其控制系统和机械传动装置来实现的。在近代机械工业的发展过程中，机电传动的发展，经历了一个复杂的过程：（1） 电机的拖动的发展过程如下：（2） 控制系统的发展过程如下：由