拼焊板零件变压边力鲁棒控制策略研究  

Research on Robust Control Strategy for Variable BHF of TWBs Part

作　　者：王春燕[1] 赵万忠[1] 孙培坤[1] 徐晓宏[1] 王宇[2] 

机构地区：[1]南京航空航天大学,南京210016 [2]中国第一汽车集团公司技术中心,长春130022

出　　处：《中国机械工程》2012年第6期729-732,共4页China Mechanical Engineering

基　　金：国家自然科学基金资助项目(51005115);重庆大学机械传动国家重点实验室2011年度开放基金资助项目;清华大学安全与节能国家重点实验室开放基金资助项目(KF11202)

摘　　要：针对拼焊板零件冲压成形过程中恒压边力方法的不足,提出基于混合H2/H∞理论的变压边力控制方法,建立了变压边力混合H2/H∞控制模型,设计了变压边力混合H2/H∞控制算法和控制逻辑。采用该模型对拼焊板零件冲压成形进行反馈数值模拟,分析有无变压边力混合H2/H∞控制对拼焊板零件成形缺陷的影响,并在变压边力冲压机上进行试验验证。仿真和试验结果表明:基于混合H2/H∞理论的变压边力控制方法可成功冲压出车身前围上盖板,可有效避免恒压边力下的起皱和破裂两种缺陷,该控制方法同时考虑冲压行程和压边板位置进行压边力优化,具有更好的鲁棒性。Because of the deficiencies of constant BHF method in the stamping process of TWBs, a mixed H2/H∞ control method for the variable BHF was proposed. A control model for the mixed H2/H∞ control was built,then its control algorithm and logic were designed. Based on the designed model,the feedback numerical simulation was used to analyze the influences of the mixed H2/H∞ control method on defects of TWBs. The tests were conducted on the variable BHF hydraulic press in order to verify the simulation results, and the simulation and test results show that the cowls top cover board can be stamped successfully based on the mixed H2/H∞ control theory for the variable BHF. Considering the stamping tip and blank holder board position, the proposed BHF determination approach can avoid wrinkling and cracking under constant BHF,which makes it a robust strategy.

关 键 词：车身工程 拼焊板 压边力 混合H2/H∞控制 

分 类 号：TG306[金属学及工艺—金属压力加工]