Complex system serviceability method and apparatus

• US 20040193938A1
• Filed: 03/28/2003
• Published: 09/30/2004
• Est. Priority Date: 03/28/2003
• Status: Abandoned Application

• Current Assignee: GE Medical Systems Inc (GE Aerospace)
• Original Assignee: GE Medical Systems Inc (GE Aerospace)
• Inventors: Crowley, Stephen Robert, Azzaro, Steven Hector, Frowein, Richard Lee, Waldron, Ernest Joseph, Shah, Rasiklal Punjalal
• Application Number:
  US10/402,722
• Publication Number:
  US 20040193938A1
• Time in Patent Office: Days
• US Class Current: 714/2
• CPC Class Codes: H04L 1/22 using redundant apparatus to increase reliability

Abstract

A serviceability strategy is established that permits the definition of a plurality of service models for components, functions, subsystems and field replaceable units in a complex machine system, as well as the implementation of the models for rendering service as serviceable events and faults occur, and for improvement of the models over time. The models may be dedicated in such a manner as to be selectable for addressing detectable and isolatable root causes of serviceable events as they occur, and the proper models are selected as such events occur based upon predefined indicators. As service events arise over time and are addressed by recommendations made by each model, data is gathered and serves as the basis for evolving the models so as to more appropriately address root causes of serviceable events and faults, and to improve the selection of the models most apply suited to addressing serviceable events and faults.

Claims

1. A method for defining a service model for a complex system comprising:

creating a service model for a component, function, subsystem or field replaceable unit of a complex system, the service model including a plurality of failure modes and indicators for the failure modes;

applying the service model for recommendation of a service action addressing a serviceable event based upon the indictors and input data from the complex system; and

evaluating the service model based upon service actions performed.

2. The method of claim 1, comprising creating a plurality of service models for different components, functions, subsystems or field replaceable units, each service model including a plurality of failure modes and indicators for the failure modes for a respective component, function, subsystem or field replaceable unit.

3. The method of claim 1, wherein creating the service model comprises assessing probabilities of occurrence of the failure modes.

4. The method of claim 3, wherein evaluating the service model includes determining accuracy of the probabilities of occurrence of the failure modes.

5. The method of claim 1, comprising evaluating the service model prior to the applying step to determine a capability of the model to detect and isolate the failure modes.

6. The method of claim 1, wherein applying the service model includes identifying the service action from a plurality of service actions based upon the indicators and upon the input data.

7. The method of claim 1, wherein applying the service model includes selecting the service model from a plurality of service models based upon the indicators and upon the input data.

8. The method of claim 1, wherein evaluating the service model includes determining whether the recommended service action satisfactorily addressed the serviceable event.

9. The method of claim 1, comprising designating a cost for service actions associated with each failure mode.

10. The method of claim 9, comprising adding an additional indicator to provide additional failure mode isolation based upon the cost.

11. The method of claim 9, comprising establishing a recommended service action for each failure mode based at least upon the respective designated cost.

12. A method for defining a service model for a complex system comprising:

creating a plurality of service models for different components, functions, subsystems or field replaceable units, each service model including a plurality of failure modes and indicators for the failure modes for a respective component, function, subsystem or field replaceable unit;

selecting a service model from the plurality of service models based upon the indicators and upon input data from the complex system;

applying the selected service model for recommendation of a service action addressing a serviceable event based upon the indictors and input data from the complex system; and

evaluating the selected service model based upon service actions performed.

13. The method of claim 12, wherein creating the service models comprises assessing probabilities of occurrence of the failure modes.

14. The method of claim 13 wherein evaluating selected the service model includes determining accuracy of the probabilities of occurrence of the failure modes of the selected service model.

15. The method of claim 12, comprising evaluating the selected service model prior to the applying step to determine a capability of the model to detect and isolate the failure modes of the selected service model.

16. The method of claim 12, wherein applying the selected service model includes identifying the service action from a plurality of service actions based upon the indicators and upon the input data.

17. The method of claim 12, wherein evaluating the selected service model includes determining whether the recommended service action satisfactorily addressed the serviceable event.

18. The method of claim 12, comprising designating a cost for service actions associated with each failure mode.

19. The method of claim 18, comprising establishing a recommended service action for each failure mode based at least upon the respective designated cost.

20. A method for defining a service model for a complex system comprising:

creating a service model for a component, function, subsystem or field replaceable unit of a complex system, the service model including a plurality of failure modes and indicators for the failure modes, and a cost for service actions associated with each failure mode;

establishing a recommended service action for each failure mode based at least upon the respective designated cost;

applying the service model for recommendation of a service action addressing a serviceable event based upon the indictors, the costs and input data from the complex system; and

evaluating the service model based upon service actions performed.

21. The method of claim 20, comprising adding an additional indicator to provide additional failure mode isolation based upon the cost.

22. The method of claim 20, wherein evaluating the service model included determining a capability of the service model to isolate the failure modes.

23. The method of claim 22, comprising adding an additional indicator to provide additional failure mode isolation based upon the evaluation.

24. The method of claim 20, wherein creating the service model comprises assessing probabilities of occurrence of the failure modes.

25. The method of claim 24, wherein evaluating the service model includes determining accuracy of the probabilities of occurrence of the failure modes.

26. The method of claim 20, comprising evaluating the service model prior to the applying step to determine a capability of the model to detect and isolate the failure modes.

27. The method of claim 20, wherein applying the service model includes identifying the service action from a plurality of service actions based upon the indicators and upon the input data.

28. The method of claim 20, wherein applying the service model includes selecting the service model from a plurality of service models based upon the indicators and upon the input data.

29. The method of claim 20, wherein evaluating the service model includes determining whether the recommended service action satisfactorily addressed the serviceable event.

30. A system for defining a service model for a complex system comprising:

a model development and evaluation system adapted for creating a service model for a component, function, subsystem or field replaceable unit of a complex system, the service model including a plurality of failure modes and indicators for the failure modes;

an analysis and service module adapted for applying the service model for recommendation of a service action addressing a serviceable event based upon the indictors and input data from the complex system; and

a model refinement module adapted for evaluating the service model based upon service actions performed.

31. The system of claim 30, wherein the model development and evaluation system generates a graphical user interface adapted for definition of the failure modes and indicators.

32. The system of claim 31, wherein the model development and evaluation system generates a plurality of graphical user interfaces each adapted for definition and viewing of failure mode and indicator data input via a different interface.

33. The system of claim 30, wherein the model development and evaluation system is configured to evaluate the model to determine a capability of the model to detect and isolate failure modes based upon the indicators.

34. The system of claim 33, wherein the model development and evaluation system is adapted to generate a report based upon the evaluation.

35. The system of claim 30, wherein the analysis and service module is adapted to select the service model from a plurality of service models based upon the indicators and operational data from the complex system.

36. The system of claim 35, wherein the analysis and service module is adapted to access the operational data from the complex system.

37. The system of claim 30, wherein the indicators include runtime and manual indicators.

38. The system of claim 30, wherein the model refinement module is configured to access data representative of service actions performed based upon recommendations of the service module.

39. The system of claim 38, wherein the model refinement module is configured to identify whether the service actions performed satisfactorily addressed failure modes of the service model.

40. A system for defining a service model for a complex system comprising:

means for creating a service model for a component, function, subsystem or field replaceable unit of a complex system, the service model including a plurality of failure modes and indicators for the failure modes;

means for applying the service model for recommendation of a service action addressing a serviceable event based upon the indictors and input data from the complex system; and

means for evaluating the service model based upon service actions performed.

41. A system for defining a service model for a complex system comprising:

means for creating a plurality of service models for different components, functions, subsystems or field replaceable units, each service model including a plurality of failure modes and indicators for the failure modes for a respective component, function, subsystem or field replaceable unit;

means for selecting a service model from the plurality of service models based upon the indicators and upon input data from the complex system;

means for applying the selected service model for recommendation of a service action addressing a serviceable event based upon the indictors and input data from the complex system; and

means for evaluating the selected service model based upon service actions performed.

42. A system for defining a service model for a complex system comprising:

means for creating a service model for a component, function, subsystem or field replaceable unit of a complex system, the service model including a plurality of failure modes and indicators for the failure modes, and a cost for service actions associated with each failure mode;

means for establishing a recommended service action for each failure mode based at least upon the respective designated cost;

means for applying the service model for recommendation of a service action addressing a serviceable event based upon the indictors, the costs and input data from the complex system; and

means for evaluating the service model based upon service actions performed.

43. A computer program for defining a service model for a complex system comprising:

at least one machine readable medium for storing computer code; and

computer code stored on the media for performing a series of routines including creating a service model for a component, function, subsystem or field replaceable unit of a complex system, the service model including a plurality of failure modes and indicators for the failure modes, applying the service model for recommendation of a service action addressing a serviceable event based upon the indictors and input data from the complex system, and evaluating the service model based upon service actions performed.

44. A computer program for defining a service model for a complex system comprising:

at least one machine readable medium for storing computer code; and

computer code stored on the media for performing a series of routines including creating a plurality of service models for different components, functions, subsystems or field replaceable units, each service model including a plurality of failure modes and indicators for the failure modes for a respective component, function, subsystem or field replaceable unit, selecting a service model from the plurality of service models based upon the indicators and upon input data from the complex system, applying the selected service model for recommendation of a service action addressing a serviceable event based upon the indictors and input data from the complex system, and evaluating the selected service model based upon service actions performed.

45. A computer program for defining a service model for a complex system comprising:

at least one machine readable medium for storing computer code; and

computer code stored on the media for performing a series of routines including creating a service model for a component, function, subsystem or field replaceable unit of a complex system, the service model including a plurality of failure modes and indicators for the failure modes, and a cost for service actions associated with each failure mode, establishing a recommended service action for each failure mode based at least upon the respective designated cost, applying the service model for recommendation of a service action addressing a serviceable event based upon the indictors, the costs and input data from the complex system, and evaluating the service model based upon service actions performed.