Physics based neural network

• US 20040064425A1
• Filed: 09/30/2002
• Published: 04/01/2004
• Est. Priority Date: 09/30/2002
• Status: Abandoned Application

• Current Assignee: United Technologies Corporation (Raytheon Technologies Corporation d/b/a RTX)
• Original Assignee: United Technologies Corporation (Raytheon Technologies Corporation d/b/a RTX)
• Inventors: Depold, Hans R., Sirag, David John Jr.
• Application Number:
  US10/261,472
• Publication Number:
  US 20040064425A1
• Time in Patent Office: Days
• US Class Current: 706/25
• CPC Class Codes: G06N 3/04 Architecture, e.g. interconnection topology
• CPC Class Codes: G06N 3/08 Learning methods

Abstract

A physics based neural network (PBNN) comprising a plurality of nodes each node comprising structure for receiving at least one input, and a transfer function for converting the at least one input into an output forming one of the at least one inputs to another one of the plurality of nodes, at least one training node set comprising the at least one input to one of the plurality of nodes, at least one input node set comprising the at least one input to the plurality of nodes, and a training algorithm for adjusting each of the plurality of nodes, wherein at least one of the transfer functions is different from at least one other of the transfer functions and wherein at least one of the plurality of nodes is a PBNN.

Claims

1. A physics based neural network (PBNN) comprising:

a plurality of nodes each node comprising;

means for receiving at least one input; and

a transfer function for converting said at least one input into an output forming one of said at least one inputs to another one of said plurality of nodes;

at least one training node set comprising said at least one input to one of said plurality of nodes;

at least one input node set comprising said at least one input to said plurality of nodes; and

a training algorithm for adjusting each of said plurality of nodes;

wherein at least one of said transfer functions is different from at least one other of said transfer functions and wherein at least one of said plurality of nodes is a PBNN.

2. The PBNN of claim 1 wherein said input data comprises training data.

3. The PBNN of claim 1 wherein said training algorithm is selected from the group consisting of back propagation, conjugate gradient, genetic, and Alopex.

4. The PBNN of claim 1 wherein at least one of said plurality of nodes converts said at least one input into a constant output.

5. The PBNN of claim 1 wherein at least one of said nodes is a neural network.

6. The PBNN of claim 1 wherein said plurality of nodes are configured to model a physical system.

7. The PBNN of claim 6 wherein said physical system is selected from the group consisting of Acoustical Systems, Engine Gas Path Mechanical Diagnostics, Elevator Doors, and CFD'"'"'s.

8. A method of modeling physical systems using physics based neural networks (PBNN) comprising the step of:

creating a PBNN comprising;

a plurality of nodes each node comprising;

means for receiving at least one input; and

a transfer function for converting said at least one input into an output forming one of said at least one inputs to another one of said plurality of nodes;

at least one training node set comprising said at least one input to one of said plurality of nodes;

at least one input node set comprising said at least one input to said plurality of nodes; and

a training algorithm for adjusting each of said plurality of nodes;

wherein at least one of said transfer functions is different from at least one other of said transfer functions and wherein at least one of said plurality of nodes is a PBNN;

connecting each of said plurality of nodes in accordance with a physical model;

specifying said transfer functions of each of said plurality of nodes;

designating at least one of said plurality of nodes as a training quantity.

9. The method of claim 8 wherein said training algorithm is selected from the group consisting of pack propagation, conjugate gradient, genetic and Alopex.

10. The method of claim 8 wherein said creating said PBNN comprises the additional step of modeling said physical system as a plurality of mathematical equations and decomposing said mathematical equations into said plurality of nodes.