IP Library Granted Patent US 7,467,123
Granted Patent B2
US 7,467,123 · App. 10/978,790 · Granted Dec 16, 2008

Method, system and computer product for generating a manufacturing process map using fuzzy logic

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Quick Facts
Patent No.
US 7,467,123
App. No.
10/978,790
Granted
Dec 16, 2008
Kind
B2
Abstract

A method for generating a manufacturing process map comprises obtaining sets of N-dimensional expert data from at least three sources, defining a membership function for each set of expert data, applying fuzzy logic operations to said membership functions to generate new membership functions, the new membership functions defining N-dimensional regions within an N-dimensional design space and using one of said N-dimensional regions to generate the manufacturing process map.

Claims (32)

1. A computer-implemented method for generating a manufacturing process map, the method comprising:

obtaining sets of N-dimensional expert data from at least three sources including an experimental data set, a simulation data set, and a set of manufacturing process experts;

defining a membership function for each set of expert data;

applying fuzzy logic operations to said membership functions to generate new membership functions; wherein the new membership functions define N-dimensional regions within an N-dimensional design space; and

using one of said N-dimensional regions to generate the manufacturing process map, wherein the manufacturing process map is used to control a manufacturing process.

2. The method of claim 1 , wherein said fuzzy logic operations include a fuzzy union of said sets of N-dimensional expert data to define an N-dimensional design region.

3. The method of claim 1 , wherein said fuzzy logic operations include a fuzzy intersection of said sets of N-dimensional expert data to define an N-dimensional acceptable region.

4. The method of claim 1 , wherein said fuzzy logic operations include a partial fuzzy union and a partial fuzzy intersection of said sets of N-dimensional expert data to define an N-dimensional tolerable region.

5. The method of claim 4 , wherein said fuzzy logic operations include a plurality of partial fuzzy union and a partial fuzzy intersection of said sets of N-dimensional expert data to define an N-dimensional tolerable region.

6. The method of claim 1 , wherein the manufacturing process map is generated for a casting process.

7. A system for generating a manufacturing process map, the system comprising:

at least one database including sets of N-dimensional expert data from at least three sources including an experimental data set, a simulation data set, and a set of manufacturing process experts;

a computer system coupled to said at least one database, said computer system implementing a method comprising:

obtaining sets of N-dimensional expert data from at least three sources; defining a membership function for each set of expert data;

applying fuzzy logic operations to said membership functions to generate new membership functions; wherein the new membership functions define N-dimensional regions within an N-dimensional design space; and

using one of said N-dimensional regions to generate the manufacturing process map, wherein the manufacturing process map is used to control a manufacturing process.

8. The system of claim 7 , wherein said fuzzy logic operations include a fuzzy union of said sets of N-dimensional expert data to define an N-dimensional design region.

9. The system of claim 7 , wherein said fuzzy logic operations include a fuzzy intersection of said sets of N-dimensional expert data to define an N-dimensional acceptable region.

10. The system of claim 7 , wherein said fuzzy logic operations include a partial fuzzy union and a partial fuzzy intersection of said sets of N-dimensional expert data to define an N-dimensional tolerable region.

11. The system of claim 10 , wherein said fuzzy logic operations include a plurality of partial fuzzy union and a partial fuzzy intersection of said sets of N-dimensional expert data to define an N-dimensional tolerable region.

12. A computer program product for generating a manufacturing process map, the computer program product comprising:

a storage medium readable by a processing circuit and storing instructions for execution by the processing circuit for performing a method comprising:

obtaining sets of N-dimensional expert data from at least three sources including an experimental data set, a simulation data set, and a set of manufacturing process experts;

defining a membership function for each set of expert data;

applying fuzzy logic operations to said membership functions to generate new membership functions; wherein the new membership functions define N-dimensional regions within an N-dimensional design space;

using one of said N-dimensional regions to generate the manufacturing process map, wherein the manufacturing process map is used to control a manufacturing process.

13. The computer program product of claim 12 , wherein said fuzzy logic operations include a fuzzy union of said sets of N-dimensional expert data to define an N-dimensional design region.

14. The computer program product of claim 12 , wherein said fuzzy logic operations include a fuzzy intersection of said sets of N-dimensional expert data to define an N-dimensional acceptable region.

15. The computer program product of claim 12 , wherein said fuzzy logic operations include a partial fuzzy union and a partial fuzzy intersection of said sets of N- dimensional expert data to define an N-dimensional tolerable region.

16. The computer program product of claim 15 , wherein said fuzzy logic operations include a plurality of partial fuzzy union and a partial fuzzy intersection of said sets of N-dimensional expert data to define an N-dimensional tolerable region.

17. The computer program product of claim 12 , wherein the manufacturing process map is generated for a casting process.

18. The system of claim 7 , wherein the manufacturing process map is generated for a casting process.

Assignments (13)
RELEASE OF SECURITY INTEREST Recorded Nov 7, 2014
From: WILMINGTON TRUST COMPANY
To: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Reel/Frame 034371/0676 →
CHANGE OF NAME Recorded Feb 10, 2011
From: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
To: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Reel/Frame 025780/0936 →
SECURITY AGREEMENT Recorded Nov 8, 2010
From: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
To: WILMINGTON TRUST COMPANY
Reel/Frame 025327/0001 →
RELEASE OF SECURITY INTEREST Recorded Nov 4, 2010
From: UNITED STATES DEPARTMENT OF THE TREASURY
To: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
Reel/Frame 025245/0442 →
RELEASE OF SECURITY INTEREST Recorded Nov 4, 2010
From: UAW RETIREE MEDICAL BENEFITS TRUST
To: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
Reel/Frame 025311/0770 →
SECURITY AGREEMENT Recorded Aug 28, 2009
From: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
To: UAW RETIREE MEDICAL BENEFITS TRUST
Reel/Frame 023162/0001 →
SECURITY AGREEMENT Recorded Aug 27, 2009
From: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
To: UNITED STATES DEPARTMENT OF THE TREASURY
Reel/Frame 023156/0052 →
RELEASE OF SECURITY INTEREST Recorded Aug 21, 2009
From: CITICORP USA, INC. AS AGENT FOR BANK PRIORITY SECURED PARTIES; CITICORP USA, INC. AS AGENT FOR HEDGE PRIORITY SECURED PARTIES
To: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
Reel/Frame 023127/0468 →
RELEASE OF SECURITY INTEREST Recorded Aug 20, 2009
From: UNITED STATES DEPARTMENT OF THE TREASURY
To: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
Reel/Frame 023124/0429 →
SECURITY AGREEMENT Recorded Apr 16, 2009
From: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
To: CITICORP USA, INC. AS AGENT FOR BANK PRIORITY SECURED PARTIES; CITICORP USA, INC. AS AGENT FOR HEDGE PRIORITY SECURED PARTIES
Reel/Frame 022553/0446 →
SECURITY AGREEMENT Recorded Feb 4, 2009
From: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
To: UNITED STATES DEPARTMENT OF THE TREASURY
Reel/Frame 022201/0610 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 14, 2009
From: GENERAL MOTORS CORPORATION
To: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
Reel/Frame 022102/0533 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jan 24, 2005
From: CHAKRABARTY, SUGATO; SUNDARRAJ, SURESH
To: GENERAL MOTORS CORPORATION
Reel/Frame 015617/0842 →