| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method for controlling an operation state by predicting a future state from a retrieval result, by retrieving a past operation example similar to a designated operation condition in a time series database of a manufacturing process of being complicated in a physical phenomenon and being strong in non-linearity. <P>SOLUTION: The time series database of the manufacturing process is successively made, and a predetermined process variable value up to the predesignated past time from the present time is quantized, and is stored in a retrieving table by being adjusted to the present time. A process variable value with the control stating point time as a starting point is quantized, and the retrieving table is retrieved with a quantization value as a retrieval key. The time of the process variable value having a quantization value similar to the retrieval key is specified in response to a similarity standard, and a value of an operation variable approximate to a preset target value in the control achieving future time, is determined by extracting a value of the operation variable of the control starting-point time of the process variable value and a value of the control variable of the control achieving future time. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
