Manufacturing process end point detection
First Claim
1. A method for identifying a predetermined state of a manufacturing process by monitoring the process, comprising:
- monitoring a plurality of variables that vary in value during the manufacturing process;
mapping as points in a hyperspace the values of each variable at a plurality of times, where the hyperspace has a number of dimensions equal to the number of variables and the number of points is equal to the plurality of times;
using a multivariate analysis method to project the points in the hyperspace in to a lower order hyperspace and the predefined location in the hyperspace in to the lower order hyperspace; and
identifying that the manufacturing process has reached the predetermined state when one of the points reaches a location in the lower order hyperspace that is located within a predefined distance from the predefined location in the lower order hyperspace.
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Abstract
A method for identifying a predetermined state of a manufacturing process by monitoring the process which involves, monitoring a plurality of variables that vary in value during the manufacturing process. The method also involves mapping as points in a hyperspace the values of each variable at a plurality of times, where the hyperspace has a number of dimensions equal to the number of variables and the number of points is equal to the plurality of times. The method also involves identifying that a manufacturing process has reached the predetermined state when one of the points reaches a closed volume in the hyperspace that is located within a predefined distance from a predefined location in the hyperspace.
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Citations
15 Claims
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1. A method for identifying a predetermined state of a manufacturing process by monitoring the process, comprising:
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monitoring a plurality of variables that vary in value during the manufacturing process; mapping as points in a hyperspace the values of each variable at a plurality of times, where the hyperspace has a number of dimensions equal to the number of variables and the number of points is equal to the plurality of times; using a multivariate analysis method to project the points in the hyperspace in to a lower order hyperspace and the predefined location in the hyperspace in to the lower order hyperspace; and identifying that the manufacturing process has reached the predetermined state when one of the points reaches a location in the lower order hyperspace that is located within a predefined distance from the predefined location in the lower order hyperspace. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system for identifying a predetermined state of a manufacturing process by monitoring the process, comprising:
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means for monitoring a plurality of steps for manufacturing a product wherein each step is defined by at least one variable that varies in value during the manufacturing process; means for mapping as points in a hyperspace the values of each variable at a plurality of times, where the hyperspace has a number of dimensions equal to the number of variables and the number of points is equal to the plurality of times; means for projecting the points in the hyperspace in to a lower order hyperspace and the predefined location in the hyperspace in to the lower order hyperspace; and means for identifying that the manufacturing process has reached a predetermined state when one of the points reaches a location in the lower order hyperspace that is located within a predefined distance from the predefined location in the lower order hyperspace.
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12. A computer program product, tangibly embodied in an information carrier, the computer program product including instructions being operable to cause data processing apparatus to:
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monitor a plurality of steps for manufacturing a product wherein each step is defined by at least one variable that varies in value during the manufacturing process; map as points in a hyperspace the values of each variable at a plurality of times, where the hyperspace has a number of dimensions equal to the number of variables and the number of points is equal to the plurality of times; use a multivariate analysis method to project the points in the hyperspace in to a lower order hyperspace and the predefined location in the hyperspace in to the lower order hyperspace; and identify that the manufacturing process has reached a predetermined state when one of the points reaches a location in the lower order hyperspace that is located within a predefined distance from a predefined location in the lower order hyperspace.
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13. A method for identifying a predetermined state of a manufacturing process by monitoring the process, comprising:
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monitoring a plurality of variables that vary in value during the manufacturing process; mapping as points in a hyperspace the values of each variable at a plurality of times, where the hyperspace has a number of dimensions equal to the number of variables and the number of points is equal to the plurality of times; using a transformation method to transform a model of the manufacturing process in hyperspace into a line, the predetermined location in the hyperspace onto the line, and the points in hyperspace to transformed points on the line; identifying that the manufacturing process has reached the predetermined state when one of the points reaches a location in the lower order hyperspace that is located within a predefined distance from the predefined location on the line.
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14. A system for identifying a predetermined state of a manufacturing process by monitoring the process, comprising:
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means for monitoring a plurality of steps for manufacturing a product wherein each step is defined by at least one variable that varies in value during the manufacturing process; means for mapping as points in a hyperspace the values of each variable at a plurality of times, where the hyperspace has a number of dimensions equal to the number of variables and the number of points is equal to the plurality of times; means for transforming a model of the manufacturing process in hyperspace into a line, the predefined location in the hyperspace onto the line, and the points in hyperspace to transformed points on the line; means for identifying that the manufacturing process has reached a predetermined state when one of the transformed points reaches a location on the line that is located within a predefined distance from the predefined location on the line.
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15. A computer program product, tangibly embodied in an information carrier, the computer program product including instructions being operable to cause data processing apparatus to:
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monitor a plurality of steps for manufacturing a product wherein each step is defined by at least one variable that varies in value during the manufacturing process; map as points in a hyperspace the values of each variable at a plurality of times, where the hyperspace has a number of dimensions equal to the number of variables and the number of points is equal to the plurality of times; using a transformation method to transform a model of the manufacturing process in hyperspace into a line, the predefined location in the hyperspace onto the line, and the points in hyperspace to transformed points on the line; identify that the manufacturing process has reached a predetermined state when one of the transformed points reaches a location on the line that is located within a predefined distance from a predefined location on the line.
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Specification