Health Evaluation and Prognostic Method for Non-Monotonic Dependent Parameters

• US 20170341606A1
• Filed: 05/26/2016
• Published: 11/30/2017
• Est. Priority Date: 05/26/2016
• Status: Active Grant

• Current Assignee: The Boeing Co.
• Original Assignee: The Boeing Co.
• Inventors: Boggio, John M.
• Granted Patent: US 10,124,752 B2
• Time in Patent Office: Days
• CPC Class Codes: B60R 16/0232 for measuring vehicle parameters and indicating critical, abnormal or dangerous conditions
• CPC Class Codes: B64D 13/08 the air being heated or cooled
• CPC Class Codes: B64D 2013/0603 Environmental Control Systems
• CPC Class Codes: B64D 2045/0085 Devices for aircraft health monitoring, e.g. monitoring flutter or vibration
• CPC Class Codes: G06Q 10/063 Operations research, analysis or management
• CPC Class Codes: G06Q 10/107 Computer-aided management of electronic mailing [e-mailing]
• CPC Class Codes: G07C 5/0841 Registering performance data recording measured values G01D; information storage G11B

Abstract

A method of evaluating health of a control system with fluctuating parameters is provided. The method may include receiving session data including actual parameters and target parameters of the control system, segmenting the session data into one or more data segments, calculating a segment score for each data segment based on at least a linear regression correlation coefficient and an average parameter difference, generating a session score based on a combination of the segment scores, and generating a notification indicative of a comparison between the session score and a predefined threshold.

Claims

1. A method of evaluating health of a control system with fluctuating parameters, comprising:

receiving, at a controller, session data including actual parameters and target parameters from the control system;

segmenting, at the controller, the session data into one or more data segments;

calculating, at the controller, a segment score for each data segment based on at least a linear regression correlation coefficient and an average parameter difference;

generating, at the controller, a session score based on a combination of the segment scores; and

generating, at the controller, a notification indicative of a comparison between the session score and a predefined threshold.

2. The method of claim 1, wherein the target parameters include target temperature parameters and the actual parameters include actual temperature parameters of a cabin of an aircraft, and the notification is communicated to a flight data recorder.

3. The method of claim 1, wherein the session data is segmented into one or more data segments based on changes in the target parameters.

4. The method of claim 1, wherein the segment score is further calculated based on a segment trend and a segment duration.

5. The method of claim 4, wherein the segment score is calculated according to a scoring algorithm, the scoring algorithm being configured to calculate the segment score based on the linear regression correlation coefficient of the actual parameters, the average difference between the actual parameters and the target parameters, an average slope of the actual parameters, a percentage of time the actual parameters are not within an acceptable range of the target parameters, and a duration of the data segment.

6. The method of claim 1, wherein the session score is generated based on the segment score and a segment duration of each data segment.

7. The method of claim 1, wherein the predefined threshold includes one or more session scores corresponding to previously obtained session data.

8. The method of claim 1, wherein the notification includes information pertaining to one or more failures in the control system responsible for controlling the actual parameters.

9. A controller for evaluating health of a control system with fluctuating parameters, comprising:

a communication module configured to acquire session data including actual parameters and target parameters of the control system;

a segmentation module configured to segment the session data into one or more data segments;

a data analysis module configured to calculate a segment score for each data segment based on at least a linear regression correlation coefficient and an average parameter difference; and

a scoring module configured to generate a session score based on a combination of the segment scores.

10. The controller of claim 9, wherein the target parameters include target temperature parameters and the actual parameters include actual temperature parameters of a cabin of an aircraft detected by one or more temperature sensors, the communication module further being configured to generate a notification indicative of a comparison between the session score and a predefined threshold, and communicate the notification to a flight data recorder.

11. The controller of claim 9, wherein the segmentation module is configured to segment the session data into one or more data segments based on changes in the target parameters, and the scoring module is configured to generate the session score based on the segment score and a segment duration of each data segment.

12. The controller of claim 9, wherein the data analysis module is configured to calculate the segment score according to a scoring algorithm, the scoring algorithm being configured to calculate the segment score based on the linear regression correlation coefficient of the actual parameters, the average difference between the actual parameters and the target parameters, an average slope of the actual parameters, a percentage of time the actual parameters are not within an acceptable range of the target parameters, and a duration of the data segment.

13. The controller of claim 9, wherein the communication module is further configured to generate a notification indicative of a comparison between the session score and a predefined threshold, the predefined threshold including one or more session scores corresponding to previously obtained session data, and the notification including information pertaining to one or more failures in the control system responsible for controlling the actual parameters.

14. An information management system for evaluating fluctuating parameters, comprising:

a sensor network configured to detect one or more actual parameters;

a control system configured to adjust the one or more actual parameters based on corresponding target parameters; and

a controller in electrical communication with the sensor network and the control system, the controller configured to acquire session data based on the actual parameters and the target parameters, segment the session data into one or more data segments, calculate a segment score for each data segment based on at least a linear regression correlation coefficient and an average parameter difference, and generate a session score based on a combination of the segment scores.

15. The information management system of claim 14, wherein the target parameters include target temperature parameters and the actual parameters include actual temperature parameters of a cabin of an aircraft detected by one or more temperature sensors.

16. The information management system of claim 14, wherein the controller is configured to segment the session data into one or more data segments based on changes in the target parameters.

17. The information management system of claim 14, wherein the controller is configured to calculate the segment score further based on a segment trend and a segment duration.

18. The information management system of claim 14, wherein the controller is configured to calculate the segment score according to a scoring algorithm, the scoring algorithm being configured to calculate the segment score based on the linear regression correlation coefficient of the actual parameters, the average difference between the actual parameters and the target parameters, an average slope of the actual parameters, a percentage of time the actual parameters are not within an acceptable range of the target parameters, and a duration of the data segment.

19. The information management system of claim 14, wherein the controller is configured to generate the session score based on the segment score and a segment duration of each data segment.

20. The information management system of claim 14, wherein the controller is further configured to generate a notification indicative of a comparison between the session score and a predefined threshold, and communicate the notification to a flight data recorder, the predefined threshold including one or more session scores corresponding to previously obtained session data, the notification including information pertaining to one or more failures in the control system responsible for controlling the actual parameters.