Drift detection method for a control apparatus controlling...

Details Drift detection method for a control apparatus controlling... Drift detection method for a control apparatus controlling...

2005-03-15

2005-03-15

Williams, Hezron (Department: 2856)

Measuring and testing

Instrument proving or calibrating

Fluid pressure

C073S001620, C264S040500, C425S149000

Reexamination Certificate

active

06865924

ABSTRACT:
In a drift detection method for detecting drift in a pressure detection value output from a pressure detector, pressure is detected by the pressure detector at a preset detection point in a pressure-uncontrolled region in an arbitrary molding cycle. The detected pressure is set as a reference pressure. Pressure is detected by the pressure detector at the same detection point in the pressure-uncontrolled region in a subsequent molding cycle. A deviation of the detected pressure from the reference pressure is obtained. When the deviation is greater than a preset value, it is determined that a drift is present, and processing for coping with the drift is performed.

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