发明公开
EP0660211A2 Method of controlling a manufacturing process
失效
Methode zur steuerung eines Herstellungsprozesses。
- 专利标题： Method of controlling a manufacturing process
- 专利标题（中）： Methode zur steuerung eines Herstellungsprozesses。
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申请号： EP94420336.3申请日： 1994-12-01
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公开(公告)号： EP0660211A2公开(公告)日： 1995-06-28
- 发明人: Hopkins, Robert William, c/o Eastman Kodak Company , Miller, Paige, c/o Eastman Kodak Company , Swanson, Ronald Eddy, c/o Eastman Kodak Company , Scheible, John Joseph, c/o Eastman Kodak Company
- 申请人： EASTMAN KODAK COMPANY
- 申请人地址： 343 State Street Rochester, New York 14650-2201 US
- 专利权人： EASTMAN KODAK COMPANY
- 当前专利权人： EASTMAN KODAK COMPANY
- 当前专利权人地址： 343 State Street Rochester, New York 14650-2201 US
- 代理机构： Boulard, Denis
- 优先权： US165155 19931210
- 主分类号： G05B21/02
- IPC分类号： G05B21/02 ; G05B11/32
摘要：
In a manufacturing process using multivariate analysis for statistical process control, data representing a plurality of process and/or product variables is collected during operation of the process. A surrogate variable, representing the overall state of the process is evaluated. The surrogate variable is a function of a plurality of intermediate variables, which in turn are a function of the process and/or product variables. When the value of the surrogate variable is outside of a predetermined limit, the contributions to the surrogate variable by the intermediate variables are calculated. The intermediate variable with the largest contribution is identified and the contributions to the identified intermediate variable by the process variables is calculated. The process variables with the largest contribution to the identified intermediate variable are identified, and used to diagnose and correct the problem with the process.
公开/授权文献
- EP0660211A3 Method of controlling a manufacturing process 公开/授权日：1996-01-10
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