基于迭代学习的注塑机开合模机构定位控制研究  

Clamping Mechanism's Position Control of IMM Based on Iterative Learning Algorithm

作　　者：杨雁[1] 王云宽[1] 宋英华[1] 

机构地区：[1]中国科学院自动化研究所,北京100080

出　　处：《中国机械工程》2008年第18期2152-2155,2165,共5页China Mechanical Engineering

基　　金：国家863高技术研究发展计划资助项目(2003AA421110)

摘　　要：提出一种用于提高注塑机开合模机构定位精度的迭代学习算法,该方法适用于采用开环分级动作控制并利用电子尺进行开合模机构定位的注塑机系统。同时还提出可变学习增益的方法来加快算法收敛速度;应用遗忘因子和学习律误差容限控制的方法来提高学习算法的鲁棒性。算法实际应用表明,在保证开合模动作平稳的前提下,开合模机构能达到较高的定位精度,满足相关注塑加工工艺要求。An iterative learning algorithm was proposed to improve the clamping mechanism＇ s positioning precision of IMM. The algorithm is feasible to be embedded into the exiting open-loop and segment motion control method. Furthermore, a changeable update rule was introduced to accelerate the convergence speed, a forget factor and a predefined error bound were used to enhance the robustness of the algorithm. In practical applications, the algorithm ensures the smooth motion and better positioning precision of the clamping mechanism.

关 键 词：注塑机 开合模机构 迭代学习控制 电液比例技术 

分 类 号：TH137[机械工程—机械制造及自动化]