大型模锻压机驱动系统的分层控制策略  

Hierarchical control strategy of large forging equipment drive system

作　　者：谢金晶[1] 黄明辉[1] 陆新江[1] 汪志能 邓坎[1] 

机构地区：[1]中南大学高性能复杂制造国家重点实验室,湖南长沙410083

出　　处：《中南大学学报（自然科学版）》2014年第5期1463-1468,共6页Journal of Central South University:Science and Technology

基　　金：国家重点基础研究发展计划("973"计划)项目(2011CB706802);国家自然科学基金资助项目(51205420);新世纪优秀人才支持计划项目(NCET-13-0593);湖南省自然科学基金资助项目(14JJ3011)

摘　　要：高质量的锻件成形需要大型模锻装备具备极低速稳定运行的能力,针对这一要求,提出内外层结合的控制策略:内层采用简单的比例反馈控制,降低速度的波动,起粗调与整定作用;外层采用子空间辨识与模型预测控制技术相结合的控制方法,起精确控制作用。仿真分析结果表明,新的控制方法能保证大惯量模锻装备在极低速下平稳运行,且比传统的模锻装备控制方法具有更好的效果。Steady operation of the large forging equipment on extremely low speed is needed in forging the forgings with high quality. In view of this question, the control strategy of combination with internal and external layer was proposed. The simple proportional feedback control was adopted in the inner layer, which can reduce the velocity fluctuations and play the role of coarse tuning and adjusting. The control strategy unites the subspace identification and the model predictive control method was adopted in the outer layer, which plays the role of delicate adjusting. The simulation results show that the steady operation of the large forging equipment on extremely low speed can be acquired with the new control method, and the result is better than the traditional control method.

关 键 词：模锻压机 分层控制 子空间辨识 模型预测控制 

分 类 号：TP271.2[自动化与计算机技术—检测技术与自动化装置]