摘要
悬浮控制系统是磁悬浮列车的一个重要的子系统。在对悬浮系统动态性能的测试中发现,随着控制中比例系数的增加,系统超调量减小,该现象与教科书中所讲述的一般控制系统特性正好相反。文中以单电磁铁悬浮控制系统为研究对象,以教科书中典型系统参数为中间变量,层层深入地剖析了这一现象本质。采用理论分析与数值计算相结合的方法,得到闭环系统增益始终大于1以及积分器的存在,是系统出现随比例系数的增加超调量减小这一现象的根本原因。
The suspension control system is an important subsystem of the maglev train. In testing the dynamic performance of the suspension control system, it is found that the system overshoot decreases when the proportion gain of the controller increases. It is contrary to the general control system described in textbooks. Based on a single magnet levitation control system, the paper takes three character parameters of the textbook as variables and analyzes the essence of the phenomenon step by step. Theoretical analysis and digital computation are applied to draw the conclusion ： the essential reasons are that close - loop stable system gain is greater than 1 and the integrator exists.
出处
《计算机仿真》
CSCD
2007年第8期316-319,共4页
Computer Simulation
基金
国家自然科学基金资助项目(60404003)
霍英东基金资助项目(94028)
关键词
磁悬浮控制系统
比例积分微分控制
动态特性
稳态增益
Magnetic levitation control system
PID control
Dynamic characteristic
Stable system gain
