无心通磨加工的自校正控制器设计  

Design of Self-tuning Controller for the Centreless Pass-grinding System

作　　者：徐素莉[1] 郑国强[1] 

机构地区：[1]河南科技大学电子信息工程学院,河南洛阳471003

出　　处：《微电子学与计算机》2010年第2期91-94,共4页Microelectronics & Computer

基　　金：国家自然科学基金项目(50875076);国家"八六三"计划项目(2004AA41140);河南省杰出人才创新基金项目(0621000800)

摘　　要：为了改变传统的人工检测和调整磨床的加工现状,稳定和提高无心磨床的工件加工质量和精度,提出了无心通磨加工控制的自适应算法.结合无心通磨加工的特点,基于工件误差序列,构造了包含非平稳干扰的无心通磨加工误差的差分方程数学模型;以系统稳定性为极点配置准则,并把参数估计和极点配置算法相结合,设计了控制无心磨削加工精度的极点配置自校正控制器.实验结果表明:同模糊PID算法相比,采用极点配置自校正控制算法的系统性能优于模糊PID算法,使系统加工精度和稳定性得到了明显的提高.An adaptive control algorithm is proposed in centreless pass-grinding system, in order to change the centreless pass-grinding situation of manual detection and adjustment, stabilize and improve work-piece＇s machining quality and accuracy. It constructs the mathematics＇ model of difference equation including nonstationary interference according to the features of centreless pass-grinding system and work-piece-error sequences. The self-tuning controller of pole-placement is designed used for machining accuracy in the centreless pass-grinding system, which is combined the estimating parameters algorithm with the pole-placement algorithm. The pricinple of pole-placement is to ensure the system＇s stability. The experiment and simulation results show that the pole-placement algorithm has advantages of improving the system＇s performance of machining accuracy and stability compared with Fuzzy-PID algorithm.

关 键 词：无心通磨 极点配置 递推参数估计 自校正控制器 

分 类 号：TP273.2[自动化与计算机技术—检测技术与自动化装置]