Methods and systems for turbine line replaceable unit fault detection and isolation during engine startup
First Claim
1. A method for detecting deterioration in an engine component by a computer processor comprising:
- monitoring, by a computer processor, an engine control unit for the execution of a command associated with an occurrence of a start up event;
recording an engine performance parameter value associated with the start up event at the time the command is executed;
comparing the recorded engine parameter value with a baseline engine parameter value indicating a normal event;
determining when the recorded engine parameter value is materially different than the baseline engine parameter value within a predefined standard; and
when the recorded engine parameter value is materially different that the baseline engine parameter value then generating an anomaly indicator.
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Abstract
Systems and methods for isolating a performance anomaly within one or more line replaceable units (LRUs) on a gas turbine engine by monitoring the start up transient are presented. The system comprises a set of sensors, an anomaly detector and a fault isolation reasoner. Each sensor of the set monitors at least one operating parameter of at least one engine component. The anomaly detector is configured to detect an anomaly in a component by comparing a particular value of an operating parameter to a base line value of that parameter. The specific cause of the startup anomaly is isolated utilizing a set of component reasoners that is based on the nature of the detected anomaly. The key events during the engine startup are identified by the combination of monitoring physically relevant phases of a startup and monitoring the engine control schedule. The values at these key events are used for comparing at the anomaly detector.
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Citations
10 Claims
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1. A method for detecting deterioration in an engine component by a computer processor comprising:
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monitoring, by a computer processor, an engine control unit for the execution of a command associated with an occurrence of a start up event; recording an engine performance parameter value associated with the start up event at the time the command is executed; comparing the recorded engine parameter value with a baseline engine parameter value indicating a normal event; determining when the recorded engine parameter value is materially different than the baseline engine parameter value within a predefined standard; and when the recorded engine parameter value is materially different that the baseline engine parameter value then generating an anomaly indicator. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification