江苏技术师范学院毕业设计说明书(论文)
直流电机比例积分调节闭环调速系统
摘要:本文介绍了带电流截止负反馈的无静差直流调速系统的Matlab仿真。为
了提高直流调速系统的动静态性能指标,故采用单闭环系统。而在单闭环系统中,转
速单闭环使用较多。在对调速性能有较高要求的领域常利用直流电动机作动力,但直流
电动机开环系统稳态性能不能满足要求,可利用速度负反馈提高稳态精度,而为了消除系
统的静差,可用比例积分调节器。反馈控制系统的规律是要想维持系统中的某个物理量
基本不变,就引用该量的负反馈信号去与恒值给定相比较,构成闭环系统。对调速系
统来说,若想提高静态指标,就得提高静特性硬度,也就是希望转速在负载电流变化
时或受到扰动时基本不变。要想维持转速这一物理量不变,最直接和有效的方发就是
采用转速负反馈构成转速闭环调节系统。为了解决反馈控制单闭环调速系统起动和堵
转时电流过大的问题,应采用电流截止负反馈。
Abstract: This paper introduces the current cut-o negative
feedback with the non-static error of the DC drive system Matlab
simulation. In order to improve the DC drive system of the static and
dynamic performance, the single closed-loop system. And in a single
closed-loop system, closed-loop single-speed use more. Performance in
high speed areas often require the use of DC motor for driving force, but
the open-loop DC motor system can not meet the requirements of the
steady-state performance, negative feedback can be used to increase the
speed of steady-state accuracy, and the system in order to eliminate the
static error, the proportion of available integral regulator. Feedback
control system is to maintain the laws of a physical system is essentially
the same, on the application of the amount of negative feedback signal to
a given and constant, compared to constitute a closed-loop system. Speed
control system for example, wants to raise the static targets, you must