摘要
给出了常规直流双闭环调速系统的仿真模型,采用Matlab对该模型进行了仿真,得出结论:常规直流双闭环调速系统具有较好的动态与静态特性,可以很好地抑制扰动量对电动机转速的影响,但该系统依赖精确数学模型,在增加解决环节的同时,系统模型趋于复杂,可能还会影响系统的可靠性。在该分析结果的基础上,提出了一种基于模糊控制+PI转速调节器的直流双闭环调速系统的设计方案,该方案中电流环仍采用常规PI调节,转速环改为模糊控制器与常规PI调节分时作用方式。仿真结果表明,引入模糊控制器的新系统响应速度高、过渡稳定、系统超调得到改善。
The paper gave a simulation model of common DC double closed-loop speed-regulation system and used Matlab to simulate the model, and made a conclusion： the common DC double closed-loop speed-regulation system has a better dynamic and static characteristics and can restrain influence of disturbance on rotation speed of motor. But the system depends on accurate mathematical model, which not only increases solution links but also makes system＇s model more complex and may affect reliability of the system. On the basis of the analysis result, the paper proposed a design scheme of DC double closed- loop speed-regulation system based on fuzzy control ＋ PI rotation speed regulator. In the scheme, the current loop still uses common PI regulation and rotation speed loop uses time-sharing action mode of fuzzy controller and common PI regulation. The simulation result showed that the new system introduced in fuzzy controller has advantages of high response speed, steady transition and improves system overshoot.
出处
《工矿自动化》
2010年第3期57-60,共4页
Journal Of Mine Automation
基金
宝鸡文理学院2008年重点项目(ZK08132)
宝鸡文理学院07年科研项目(YK0711)
关键词
直流电动机
直流调速
双闭环
电流环
转速环
模糊控制
PID控制
DC motor, DC speed-regulation, double closed-loop, current loop, rotation speed loop, fuzzy control, PID control
