控制工程
控製工程
공제공정
CONTROL ENGINEERING OF CHINA
2010年
1期
24-27
,共4页
EPC控制器%状态空间%自相关过程%统计过程控制%工程过程控制
EPC控製器%狀態空間%自相關過程%統計過程控製%工程過程控製
EPC공제기%상태공간%자상관과정%통계과정공제%공정과정공제
EPC controller%state space%autocorrelation process%statistical process control%engineering process control
观测值相互独立并服从正态分布是应用统计过程控制(SPC)的基本前提,然而由于某些不可消除因素,实际过程的输出观测值常常是自相关的.采用SPC与EPC整合,消除过程自相关,实现对自相关过程的监控.将状态空间分析法引入到EPC控制器的设计中,通过极点配置方法来分析EPC控制器的性能,研究平均运行链长(ARL)与极点配置的关系.最后对均值发生阶跃型故障的自相关ARMA(1,1)过程进行仿真实验,得到EPC控制器极点的较优配置范围.仿真结果亦证明了该方法的可行性和有效性.
觀測值相互獨立併服從正態分佈是應用統計過程控製(SPC)的基本前提,然而由于某些不可消除因素,實際過程的輸齣觀測值常常是自相關的.採用SPC與EPC整閤,消除過程自相關,實現對自相關過程的鑑控.將狀態空間分析法引入到EPC控製器的設計中,通過極點配置方法來分析EPC控製器的性能,研究平均運行鏈長(ARL)與極點配置的關繫.最後對均值髮生階躍型故障的自相關ARMA(1,1)過程進行倣真實驗,得到EPC控製器極點的較優配置範圍.倣真結果亦證明瞭該方法的可行性和有效性.
관측치상호독립병복종정태분포시응용통계과정공제(SPC)적기본전제,연이유우모사불가소제인소,실제과정적수출관측치상상시자상관적.채용SPC여EPC정합,소제과정자상관,실현대자상관과정적감공.장상태공간분석법인입도EPC공제기적설계중,통과겁점배치방법래분석EPC공제기적성능,연구평균운행련장(ARL)여겁점배치적관계.최후대균치발생계약형고장적자상관ARMA(1,1)과정진행방진실험,득도EPC공제기겁점적교우배치범위.방진결과역증명료해방법적가행성화유효성.
To the correlating problem in the statistical process control (SPC),which makes the process data are not normally and independently distributed,by integrating SPC and engineering process control (EPC),a method is proposed to remove the correlation of process data and monitor the autocorrelated processes.The state space method is introduced to the design of EPC controller.The performance of EPC controller and the relationship between the average run-length performance and poles selection are analyzed by setting the optimal poles.The simulation results on a special rang of poles by monitoring step-type mean shifted autocorrelation process ARMA (1,1) show that the method is feasible and effective.
