Patent ID: 8577494

Claim:
A method of controlling a semiconductor manufacturing apparatus comprising: obtaining a plurality of processing parameters for processing a wafer, wherein the processing parameters comprise processing conditions of the semiconductor manufacturing apparatus, and wherein the processing parameters further comprise at least one of a DC bias level applied to an electrode of the semiconductor manufacturing apparatus, an He leak amount at a time of chucking the wafer, and a capacitor value in a matching circuit for RF power; obtaining a target parameter that is measured from the wafer processed with the plurality of processing parameters; performing a multiple classification analysis with the plurality of processing parameters and the target parameter to calculate a model formula expressing the target parameter in a selected parameter that is one or more of the plurality of processing parameters; obtaining the selected parameter of a processing while the processing is being performed by the semiconductor manufacturing apparatus; calculating a predicted value of the target parameter of the wafer being processed by use of the model formula and the selected parameter, while the processing is being performed; calculating a value to be modified of a modification parameter, the modification parameter being one or more of the plurality of processing parameters of the processing being performed by the semiconductor manufacturing apparatus on the basis of the predicted value, while the processing is being performed; and performing the processing continuously by use of the value to be modified of the modification parameter.