Root-Cause Analysis System And Associated Methods
AssigneeLockheed Martin Corporation
InventorsGregory A. Harrison, Harold W. Nelson, Ross Hall, Lorie R. Ingraham
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Abstract
A method for determining a root cause of a problem in a multiple-element system includes correlating an incoming alarm signal with an element x in a multiple-element system and accessing an implication list comprising a list of all elements upstream of element x. At least one element on the implication list is weighted with data relating to the at least one element. Taking into account the weighting step, a probability is calculated that an element on the implication list comprises a most-probable root cause of the subsequent alarm signal. The identified most-probable root cause of the incoming alarm signal is output.
Claims30
A method for determining a root cause of a problem in a multiple-element system comprising:
- correlating an incoming alarm signal with an element x in a multiple-element system;
- using a connectivity map, tracing all elements upstream of the element x;
- creating an implication list comprising a list of the traced elements;
- determining a set of elements in common with elements from a previously created implication list for an element y correlated with a previously received active alarm signal, wherein element y is different from element x;
- calculating a probability that an element on the determined set of elements comprises a most-probable root cause of the subsequent alarm signal;
- and
- outputting at least one of the calculated probabilities, for identifying a most-probable root cause of the incoming alarm signal.
A method for determining a root cause of a problem in a multiple-element system comprising:
- correlating an incoming alarm signal with an element x in a multiple-element system;
- accessing an implication list comprising a list of all elements upstream of element x;
- weighting at least one element on the implication list with data relating to the at least one element;
- taking into account the weighting step, calculating a probability that an element on the implication list comprises a most-probable root cause of the subsequent alarm signal;
- and
- outputting the identified most-probable root cause of the incoming alarm signal.
An analysis system for determining a root cause of a problem in a multiple-element system comprising:
- a database containing a connectivity map for at least some elements in a multi-element system and an implication list comprising a list of traced elements for an element y correlated with a previously received active alarm signal;
- and
- a processor in signal communication with the database and adapted for receiving an incoming alarm signal associated with an element x in the multi-element system, element x different from element y, the processor having resident thereon a software system comprising:
- a connectivity analysis module adapted for accessing the connectivity map, tracing all elements upstream of the element x, and creating an implication list therefrom;
- a calculation module adapted for receiving results from the connectivity analysis module, for accessing the database, for determining a set of elements in common with elements from the implication list for element y, and for calculating from the set of elements a probability that a particular system element comprises a root cause of the issuance of the incoming alarm signal;
- and
- an output module adapted for outputting at least one of the calculated probabilities, for identifying a most-probable root cause of the incoming alarm signal.
An analysis system for determining a root cause of a problem in a multiple-element system comprising:
- a database containing a connectivity map for at least some elements in a multi-element system and an implication list comprising a list of traced elements for an element x;
- and
- a processor in signal communication with the database and adapted for receiving an incoming alarm signal associated with the element x in the multi-element system and for receiving data relating to at least one element on the implication list, the processor having resident thereon a software system comprising:
- a calculation module adapted for weighting the set of elements based upon the received element data and for calculating therefrom for each element in the set of elements a probability that a particular system element comprises a root cause of the issuance of the incoming alarm signal;
- and
- an output module adapted for outputting at least one of the calculated probabilities, for identifying a most-probable root cause of the incoming alarm signal.
Dependencies are inferred from the claim text.