变刚度弹性负载液压系统的模糊控制  

Fuzzy Control in Hydraulic System with Varying Stiffness Elastic Load

作　　者：赵慧[1] 吴远会[1] 

机构地区：[1]武汉科技大学,武汉430081

出　　处：《机床与液压》2008年第5期88-90,139,共4页Machine Tool & Hydraulics

摘　　要：以精密校直机为对象,建立了纯弹性负载电液位置伺服系统的数学建模,分析了弹性负载对系统动静态特性的影响,并针对精密校直机工作在弹塑性变形阶段带来的变刚度问题,设计出能在全工况范围内稳定快速工作的模糊控制器。仿真结果表明:该模糊控制器稳定可靠,控制效果好。Tacking a precise straightening machine as object, the mathematical model of the electro-hydraulic servo position sys- tem with elastic load only was set up, and .the dynamic and static characteristic of the system under elastic load was analyzed. Accord- ing to the varying stiffness problem occurred in the elastic-plastic phase of precise straightening machine, a fuzzy controller which could keep the system working steady and fast in the entire work condition was designed. The results of simulation show that fuzzy control is steady, reliable and highly effective.

关 键 词：精校机 变刚度 电液位置伺服系统 模糊控制 

分 类 号：TP271.31[自动化与计算机技术—检测技术与自动化装置]