交-交变频器.doc

交-交变频器双闭环调速系统自适应模糊控制的仿真研究
冯高明1 ,孙玉玺2,徐从清3
(, 河南焦作 454000;, 河南焦作 454000
平顶山工业职业技术学院,河南平顶山 467001)
摘要:本文首先给出交交变频器双闭环调速系统的原理框图,然后使用MATLAB/Simulink软件对交交变频器双闭环调速系统的自适应模糊控制方式进行了仿真,最后指出自适应模糊控制优于PI调节控制。
关键词:变频调速;控制系统;模糊控制;仿真
中图分类号:TP273 文献标识码:A
Emulation of Ac-Ac Transducer
Two-loop NN Self-regulating Fuzzy Control System
FENG Gao-ming1, SUN Yu-xi2,Xu Cong qing3
( of Electric Engineering and Automation, Henan Polytechnic University, Jiaozuo, Henan, 454000
Department of Wuzhi Count,Henan province, Jiaozuo, Henan, 454000;
3. Pingdingshan Industrial Vocational institute of Technology ,Pingdingshan,Henan, 467001)
Abstract: Two-loop Speed Control System of Ac-Ac Transducer is brought forward at the beginning of the article, and then the control mode of Two-loop NN Self-regulating Fuzzy Control System of Ac-Ac Transducer is emulated with the help of MATLAB/Simulink. It is presented at the end of this paper that NN Self-regulating Fuzzy Control is advanced of PI Control.
Key words: frequency conversion speed regulation; control system; fussy control; emulation
1 交-交变频器双闭环调速系统的原理框图
图1 交交变频调速系统近似动态结构图
1
+
s
T
K
fn
fn
负载扰动
-
-
双闭环调速系统的原理框图如图1所示:
图中,、分别为速度PI调节器、电流PI调节器的传递函数。系统所用电动机为JLJ132-,堵转电流为9A。对于力矩电动机,在电机工作点处可近似认为(如图1所示)。为测速回路增益系数;为测速回路的延时时间,在此,
(系统设计中速度采样周期取为 20ms)。为了消除测速的惯性对系统动态性能的影响,应在给定通路上也加上一个惯性环节,采用