ACOUSTIC SENSOR SYSTEMS FOR IDENTIFICATION OF ARBITRARY WAVES

20150212221

14/165065

January 27, 2014

Arbitrary wave loads are detected and reconstructed by a sensor system based on an inverse mechanism of continuous structure responses. A sensor system comprising a sensing component configured with a sandwich-structured beam of composite materials can generate the structural responses as a moving wave propagates across the beam. In one example, an Arnoldi-Tikhonov algorithm coupled with generalized cross-validation technique can be utilized to determine a regularization parameter that is utilized to compensate for the presence of noise in the wave load and/or the highly ill-posed problems of the inverse matrix that is utilized for wave reconstruction. Further, the Tikhonov algorithm can be utilized to reconstruct wave loads (e.g., at different location on the beam and/or different times) based on the structural response parameters and the regularization parameter. As an example, an image of the determined wave load values can be rendered in three dimensions (3-D) versus time and location.

ENJOYOR COMPANY LIMITED (Hangzhou, CN)

1. A system, comprising: a memory configured to store computer-executable components; and a processor, communicatively coupled to the memory, configured to execute or facilitate execution of the computer-executable components, the computer-executable components comprising: a sensing component configured to determine displacement response parameter data as a wave is determined to propagate through a beam structure of a sensor; and an analysis component configured to determine, based on an inverse analysis that employs the displacement response parameter data, load data representing the wave.

2. The system of claim 1, wherein the beam structure comprises a sandwich-structured beam that is fabricated by employing composite materials, wherein the sandwich-structured beam comprises a core material inserted between two facings.

3. The system of claim 2, wherein the core material comprises a foam core.

4. The system of claim 2, wherein the two facings comprise a carbon facing or an epoxy facing.

5. The system of claim 2, wherein the sandwich-structured beam is bonded to an elastic foundation base comprising at least a defined elasticity characteristic.

6. The system of claim 5, wherein the elastic foundation base comprises a rubber base.

7. The system of claim 1, wherein the sensing component is configured to determine the displacement response parameter data based on time-of-flight measurement data.

8. The system of claim 1, wherein the computer-executable components further comprise: a regularization component that is configured to select, based on employing an Arnoldi-Tikhonov process and a generalized cross-validation process, regularization parameter data that is utilized to compensate for an error introduced during the inverse analysis, wherein the error is introduced in a solution of an inverse matrix having a conditioning number that satisfies a defined ill-conditioning criterion.

9. The system of claim 8, wherein the computer-executable components further comprise: a wave reconstruction component that is configured to determine the load data based on the regularization parameter data.

10. The system of claim 1, wherein the computer-executable components further comprise: a display component that is configured to render the load data in a three-dimensional format.

11. The system of claim 1, wherein the analysis component is further configured to determine, based on the inverse analysis, load data representing the wave at a specified location on the beam structure.

12. The system of claim 1, wherein the analysis component is further configured to determine, based on the inverse analysis, load data representing the wave at a specified time.

13. The system of claim 1, wherein the analysis component is further configured to determine, based on the inverse analysis, direction data indicative of a direction of propagation of the wave.

14. The system of claim 1, wherein the computer-executable components further comprise: a calibration component that is configured to compare the displacement response parameter data with expected data to facilitate a calibration of the system.

15. A method, comprising: as a function of a wave propagating through a beam structure of a sensor, determining, by a system comprising a processor, displacement response parameter data associated with the beam structure; and based on an inverse analysis that employs the displacement response parameter data, determining load data that is employable to reconstruct the wave.

16. The method of claim 15, wherein the determining the displacement response parameter data comprises determining the displacement response parameter data based on time-of-flight measurement data.

17. The method of claim 15, wherein the determining the load data comprises determining a load associated with the wave at least one of at a specified time or a specified location on the beam structure.

18. The method of claim 15, further comprising: based on the load data, rendering a three-dimensional image of the wave via a display interface.

19. A tangible computer readable medium comprising computer-executable instructions that, in response to execution cause a system comprising a processor to perform operations, comprising: determining structural response parameter data associated with a sensor comprising a beam structure, wherein the structural response parameter data is indicative of a structural response of the sensor under a load exerted by a wave travelling across the beam structure; and based on an inverse analysis of the structural response parameter data, determining reconstruction data that facilitates a rendering of the wave.

20. The tangible computer readable medium of claim 19, wherein the determining the reconstruction data comprises determining the reconstruction data based on regularization parameter data that is utilized to reduce an error introduced during the inverse analysis, wherein the error is introduced in a solution of an inverse matrix having a conditioning number that satisfies a defined ill-conditioning criterion.

01

edspap.20150212221