US 12,460,987 B2
Systems and methods for calibrating a leak test machine for a manufacturing line
Steven Alan Christmann, Macomb, MI (US); and Stanley Kleinikkink, Kitchener (CA)
Assigned to ATS CORPORATION, Cambridge (CA)
Filed by ATS CORPORATION, Cambridge (CA)
Filed on Mar. 29, 2022, as Appl. No. 17/707,158.
Claims priority of provisional application 63/167,907, filed on Mar. 30, 2021.
Prior Publication US 2022/0334022 A1, Oct. 20, 2022
Int. Cl. G01M 3/28 (2006.01); G01M 3/00 (2006.01)
CPC G01M 3/28 (2013.01) [G01M 3/007 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for calibrating a leak test machine for a manufacturing line, the leak test machine configured to detect leakage defects in workpieces produced by the manufacturing line, the method comprising operating at least one processor to:
receive, from the leak test machine, defect data indicating a plurality of defect test results including a leak rate for at least one workpiece;
receive, from at least one sensor, environmental data indicating a plurality of ambient environmental conditions at the leak test machine, each ambient environmental condition corresponding to a defect test result obtained while the leak test machine was subject to that ambient environmental condition;
update at least one predictive model using the defect data and the environmental data, the at least one predictive model operable to predict a defect test result for a workpiece based on at least one ambient environmental condition at the leak test machine;
receive, from the at least one sensor, current environmental data indicating at least one current ambient environmental condition at the leak test machine;
determine at least one calibration setting including a leak offset rate for the leak test machine based on the at least one predictive model and the current ambient environmental data corresponding to the leak rate for the workpiece under the current ambient environmental condition, the at least one calibration setting compensating for an effect of the at least one current ambient environmental condition on the leak test machine; and
test, with the leak test machine using the at least one calibration setting, at least one other workpiece to obtain at least one calibrated defect test result for the at least one other workpiece.