Assisting failure mode and effects analysis of a system comprising a plurality of components

• US 8,347,146 B2
• Filed: 11/26/2008
• Issued: 01/01/2013
• Est. Priority Date: 12/18/2007
• Status: Expired due to Fees

• Current Assignee: BAE Systems Plc
• Original Assignee: BAE Systems Plc
• Inventors: Bell, John Brian, Bovey, Richard Lee
• Primary Examiner(s): Lottich, Joshua P
• Application Number:
  US12/304,885
• Publication Number:
  US 20100262867A1
• Time in Patent Office: 1,497 Days
• Field of Search: 703/9, 703/16, 703/21, 714/37
• US Class Current: 714/37
• CPC Class Codes: G05B 23/0278 Qualitative, e.g. if-then rules; Fuzzy logic; Lookup tables; Symptomatic search; FMEA
• CPC Class Codes: G06F 11/008 Reliability or availability analysis

Abstract

A method of assisting failure mode and effects analysis of a system having a plurality of components includes obtaining data associated with a component, or a group of components, of the system. The component or the group is associated with component type data or group type data, respectively, that includes data relating to at least one failure feature common to all components or groups, respectively, of that type. The component/group data and the component/group type data can then be stored and/or transferred for use in a failure mode and effects analysis of the system.

Claims

1. A method of assisting failure mode and effects analysis of a system having a plurality of components, the method comprising:

obtaining data associated with at least one component and a group that includes the at least one component of the system;

associating the at least one component with component type data and the group that includes the at least one component with group type data, wherein each of the component type data and the group type data include data relating to at least one failure feature common to each instance of the at least one component and the group that includes the at least one component associated with a respective type; and

at least one of storing and transferring data of the at least one component, data of the group that includes the at least one component, component type data, and group type data for use in a failure mode and effects analysis of the system,

wherein the data relating to the at least one failure feature includes a prior probability of the failure occurring, and at least one of a conditional probability of a symptom given one said failure, and a probability of a symptom given absence of any modeled failure.

2. The method according to claim 1, wherein the step of obtaining data associated with at least one component of the system includes analysing a model of the system to determine if the at least one component is already associated with said component type data, and if the at least one component is not already associated with said component type data then component type data for the at least one component is created and associated with the at least one component.

3. The method according to claim 2, wherein the step of analysing the model includes:

detecting a shape of a graphical representation of the at least one component in the model; and

determining a master or template upon which the shape is based to determine the component type data to be associated with the at least one component.

4. The method according to claim 3, wherein a graphical part of the model of the system is created using Microsoft Visio™

and the step of detecting a shape representing the at least one component is implemented by an add-on configured to detect an “

add shape”

event in Visio™

.

5. The method according to claim 1, wherein failure feature data is also selected from at least one of a type/name/mode of a failure;

an effect of the failure on at least one of the system and other components;

a symptom of the failure; and

a value representing a probability of the failure symptom leading to the failure occurring.

6. The method according to claim 1, wherein the component type data and the group type data are stored independently of the data of the at least one component and the data of the group that includes the at least one component, respectively.

7. The method according to claim 1, wherein the component type data and the group type data include, or are associated with, data describing an effect of the failure of the respective component and the group that includes the respective component on at least one of other components, other groups, and the system.

8. The method according to claim 1, wherein each component in the model is assigned a unique identifier and each component type is assigned a unique identifier and the step of at least one of storing and transferring the component and component type data includes at least one of storing and transferring the component data with a reference between the unique identifier of a respective component and the unique identifier of a respective component type associated with the respective component.

9. A computer program product including a non-transitory computer readable medium, having recorded thereon computer program code, wherein when the computer program product is loaded into a computer the computer executes a method of assisting failure mode and effects analysis of a system having a plurality of components, the method comprising:

obtaining data associated with at least one component and a group that includes the at least one components of the system;

associating the at least one component with component type data and the group that includes the at least one components with group type data, wherein each of the component type data and the group type data include data relating to at least one failure feature common to each instance of the at least one component and the group that includes the at least one component associated with a respective type; and

at least one of storing and transferring the data of the at least one component, the data of the group that includes the at least one component, the component type data, and the group type data for use in a failure mode and effects analysis of the system,

wherein the data relating to the at least one failure feature includes a conditional probability of a symptom given one said failure and at least one of a prior probability of the failure occurring, and a probability of a symptom given absence of any modeled failure.

10. The computer program product of claim 9, wherein during execution of the method failure feature data is selected from at least one of a type/name/mode of a failure;

an effect of the failure on at least one of the system and other components;

a symptom of the failure; and

a value representing a probability of the failure symptom leading to the failure occurring.

11. The computer program product of claim 9, wherein during execution of the method the component type data and the group type data are stored independently of the data of the at least one component and the data of the group that includes the at least one component, respectively.

12. The computer program product of claim 9, wherein during execution of the method the component type data and the group type data are stored independently of the data of the at least one component and the data of the group that includes the at least one component, respectively.

13. The computer program product of claim 9, wherein during execution of the method the component type data and the group type data include, or are associated with, data relating to failure features of a respective component and a group that includes the respective component, which includes data describing an effect of the failure of the respective component and the group that includes the respective component on at least one of other components, other groups, and the system.

14. The computer program product of claim 9, wherein during execution of the method the component type data and the group type data include, or are associated with, data relating to failure features of a respective component and a group that includes the respective component, which includes data describing an effect of the failure of the respective component and the group that includes the respective component on at least one of other components, other groups, and the system.

15. The computer program product of claim 14, wherein during execution of the method each component in a model is assigned a unique identifier and each component type is assigned a unique identifier and the step of at least one of storing and transferring the component and component type data includes at least one of storing and transferring the component data with a reference between the unique identifier of a respective component and the unique identifier of a respective component type associated with the respective component.

16. The computer program product of claim 15, wherein during execution of the method a graphical part of the model of the system is created using Microsoft Visio™

and detecting a shape representing the at least one component is implemented by an add-on configured to detect an “

add shape”

event in Visio™

.

17. The computer program product of claim 9, wherein during execution of the method each component in a model is assigned a unique identifier and each component type is assigned a unique identifier and the step of at least one of storing and transferring the component and component type data includes at least one of storing and transferring the component data with a reference between the unique identifier of a respective component and the unique identifier of a respective component type associated with the respective component.

18. The computer program product of claim 9, wherein during execution of the method a graphical part of a model of the system is created using Microsoft Visio™

and detecting a shape representing the at least one component is implemented by an add-on configured to detect an “

add shape”

event in Visio™

.

19. An apparatus adapted to assist failure mode and effects analysis of a system having a plurality of components, the apparatus comprising:

a device adapted to obtain data associated with at least one component and a group that includes the at least one component of the system;

a device adapted to associate the at least one component with component type data and the group that includes the at least one component with group type data, wherein each of the component type data and the group type data include data relating to at least one failure feature common to each instance of the at least one component and the group that includes the at least one component associated with a respective type; and

a device for at least one of storing and transferring the data of the at least one component, the data of the group that includes the at least one component, the component type data, and the group type data for use in a failure mode and effects analysis of the system,

wherein the data relating to the at least one failure feature includes a probability of a symptom given absence of any modeled failure and at least one of a conditional probability of a symptom given one said failure, and a prior probability of the failure occurring.