INITATED TEST HEALTH MANAGEMENT SYSTEM AND METHOD

• US 20150241853A1
• Filed: 02/25/2014
• Published: 08/27/2015
• Est. Priority Date: 02/25/2014
• Status: Active Grant

• Current Assignee: Honeywell International Inc.
• Original Assignee: Honeywell International Inc.
• Inventors: Vechart, Andrew Peter, Busch, Darryl, Enns, Dale Frederick
• Granted Patent: US 9,915,925 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G05B 23/0256 injecting test signals and analyzing monitored process response, e.g. injecting the test signal while interrupting the normal operation of the monitored system; superimposing the test signal onto a control signal during normal operation of the monitored system
• CPC Class Codes: G05B 9/02 electric

Abstract

A system and method for verifying the response capabilities of a control effector include processing, in a test module, at least command data and sensor data associated with the control effector to generate control effector health data representative of control effector health. The control effector health data are processed in a reasoner to selectively indict and clear one or more faults, determine a failure is uncertain based on the one or more indicted faults, determine one or more test excitation signals to supply to the control effector to verify whether the uncertain failure is present or absent, and supply the one or more test excitation signals to a controller that is in operable communication with the control effector.

Claims

1. A method for verifying the response capabilities of a control effector, the method comprising the steps of:

processing, in a test module, at least command data and sensor data associated with the control effector to generate control effector health data representative of control effector health; and

processing the control effector health data in a reasoner to;

(i) selectively indict and clear one or more faults,

(ii) determine a failure is uncertain based on the one or more indicted faults,

(iii) determine one or more test excitation signals to supply to the control effector to verify whether the uncertain failure is present or absent, and

(iv) supply the one or more test excitation signals to a controller that is in operable communication with the control effector.

2. The method of claim 1, further comprising:

before determining the one or more test excitation signals to supply to the control effector, determining, in the reasoner, whether the one or more test excitation signals will indeed be useful to verify whether the uncertain failure is present or absent.

3. The method of claim 1, further comprising:

supplying the one or more test excitation signals from the controller to the control effector.

4. The method of claim 1, further comprising:

processing, in the test module, sensor data associated with the control effector while being commanded according to the test excitation signals supplied to the control effector to generate updated control effector health data; and

processing the updated control effector health data in the reasoner to verify whether the uncertain failure is present or absent.

5. The method of claim 4, further comprising:

determining, based on the actual failure, a usable range of control effector commands to which the control effector can respond.

6. The method of claim 5, further comprising:

supplying the usable range of control effector commands to an adaptive control system.

7. The method of claim 1, wherein the uncertain failure is a collapsed domain of a binary-domain effector.

8. The method of claim 1, wherein the uncertain failure is a minimum time at a certain value of a binary-domain effector.

9. The method of claim 1, wherein the uncertain failure is a collapsed domain of a continuous-domain effector.

10. The method of claim 1, wherein the uncertain failure is a degraded upper limit of a continuous-domain effector.

11. The method of claim 1, wherein the uncertain failure is a degraded lower limit of a continuous-domain effector.

12. The method of claim 1, wherein the uncertain failure is a degraded rate limit of a continuous-domain effector.

13. A system for determining the response capabilities of a control effector, comprising:

a test module adapted to receive at least command data and sensor data associated with a control effector, the test module configured, upon receipt of these data, to generate control effector health data representative of control effector health; and

a reasoner coupled to receive the control effector health data and configured, in response thereto, to (i) selectively indict and clear one or more faults, (ii) determine a suspected failure that may be caused by one or more indicted faults, (iii) determine one or more test excitation signals to supply to the control effector to verify whether the suspected failure is an actual failure, and (iv) supply the one or more test excitation signals to a controller that is in operable communication with the control effector.

14. The system of claim 13, wherein the reasoner is further configured, before determining the one or more test excitation signals to supply to the control effector, to determine, whether the one or more test excitation signals will indeed be useful to verify whether the uncertain failure is present or absent.

15. The system of claim 13, wherein the controller is configured to supply the one or more test excitation signals to the control effector.

16. The system of claim 13, wherein:

the test module is further configured to process sensor data associated with the control effector while being commanded according to the test excitation signals supplied to the control effector to generate updated control effector health data; and

the reasoner is further configured to process the updated control effector health data to verify whether the uncertain failure is present or absent.

17. The system of claim 16, wherein the reasoner is further configured, based on the actual failure, to determine a usable range of control effector commands to which the control effector can respond.

18. The system of claim 13, wherein:

the control effector is a binary-domain effector; and

the uncertain failure is one or more of a collapsed domain, and a minimum time at a certain value.

19. The method of claim 13, wherein:

the control effector is a continuous-domain effector; and

the uncertain failure is one or more of a collapsed domain, a degraded upper limit, a degraded lower limit, and a degraded rate limit.