|
Abstract：
|
|
Forged piece precision and load condition of housing are affected directly by holding precision of moving beam of water press.By analyzing principle and model of hydraulic position holding system of moving beam on 300 MN huge water press,a new control strategy was stated for large-scale water press which had such characteristics as process repetition,strict initial precision needed and a small quantity in each batch,using PD control output as ILC initial con- trol output,using ILC as front feed controller for restraining periodic non-central load disturbance,and using PD as feedback controller for enhancing system robustness.Simulation results of complex and maximum deflection load show that expected precision can be obtained through two-six steps without reducing initial precision and the maximum de- flection angle can be diminished to 30%～40%of which appears by using common PD controller.
|
|
Funds：
|
|
国家973资助项目(2005CB724102);;
湖南省自科基金(06JJ20045)
|
|
AuthorIntro：
|
|
|
|
Reference：
|
[1]谭建平，刘吴．溢流型液压位置保持系统的研究和应用[J]．机械工程学报，2004，40(3)：119-123．
[2]张友旺，谭建平，钟掘．模锻液压机同步平衡系统开关和比例控制的自动调节特性分析[J]．机床与液压，1998，15 (1)：36-38．
[3]李书臣，李平．迭代学习控制理论现状与展望[J]．系统仿真学报，2005，17(4)：904-907．
[4]王建国，阮小娥．工业过程迭代学习算法的鲁棒性[J]．工程数学学报，2004，21(1)：127-130．
[5]赵弘，林廷圻，赵升吨．机械压力机滑块位置的智能学习控制[J]．农业工程学报，2003，19(4)：118-121．
[6]陈纪朋．迭代学习控制的分析与应用[D]．南京：南京理工大学，2005．
[7]Roberts P D.Stability analysis of iterative optimal control al- gorithms model led as linear unitmeor repetitive processes [J].IEEP roc Control Theory Applications,2000,147 (3):229-238.
[8]Jang T,Choi C H,Ahn H S.Iterative learning control in feedback system[J].Automatica,1995,31(2):243- 248.
[9]孙维，王伟等，朱瑞军．即时学习算法在非线性系统迭代学习控制中的应用[J]．控制与决策，2003，19(3)：263- 266．
[10]杨胜跃，樊晓平，罗安．基于经验数据库的迭代学习初始控制输入量的确定[J]．控制与决策，2004，19(1)：27- 30．
[11]刘华，闫洁，林俊义．轴盘类零件的差温无模锻造模拟分析[J]．锻压技术，2006，31(6)：17-20．
|
|
Service：
|
|
【This site has not yet opened Download Service】【Add
Favorite】
|
|
|
|
Copyright Forging & Stamping Technology.All rights reserved