Partitioning of turbomachine faults
First Claim
Patent Images
1. A method of partitioning turbomachine faults, comprising:
- using a modeling computer to model a system and to establish a modeled gas path parameter and a modeled subsystem parameter;
determining a gas path condition representing a difference between an actual gas path parameter and the modeled gas path parameter;
determining a subsystem condition representing a difference between an actual subsystem parameter and the modeled subsystem parameter;
diagnosing a sensor failure based on the gas path condition and the subsystem condition;
adjusting the modeled subsystem parameter to match the actual subsystem parameter;
determining a model-driven gas path parameter based on the modeled subsystem parameter; and
diagnosing an actuator failure or a module performance change based on a comparison of the modeled gas path parameter and the model-driven gas path parameter.
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Abstract
An example method of partitioning turbomachine faults includes using a modeling computer to model a system, to establish a modeled gas path parameter, and to establish a modeled subsystem parameter. The method then determines a gas path condition representing a difference between an actual gas path parameter and the modeled gas path parameter. The method also determines a subsystem condition representing a difference between an actual subsystem parameter and the modeled subsystem parameter. The method diagnoses a sensor failure based on the gas path condition and the subsystem condition.
107 Citations
15 Claims
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1. A method of partitioning turbomachine faults, comprising:
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using a modeling computer to model a system and to establish a modeled gas path parameter and a modeled subsystem parameter; determining a gas path condition representing a difference between an actual gas path parameter and the modeled gas path parameter; determining a subsystem condition representing a difference between an actual subsystem parameter and the modeled subsystem parameter; diagnosing a sensor failure based on the gas path condition and the subsystem condition; adjusting the modeled subsystem parameter to match the actual subsystem parameter; determining a model-driven gas path parameter based on the modeled subsystem parameter; and diagnosing an actuator failure or a module performance change based on a comparison of the modeled gas path parameter and the model-driven gas path parameter. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of partitioning gas turbine engine faults, comprising:
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establishing, using a modeling computer, a model of a gas turbine engine; using the model to determine, using the modeling computer, a modeled gas path parameter and a modeled subsystem parameter; identifying, using the modeling computer, a fault in the gas turbine engine based on a comparison of the modeled gas path parameter to a measurement of an actual gas path parameter of the gas turbine engine and a comparison of the modeled subsystem parameter to an actual subsystem parameter from the gas turbine engine; adjusting, using the modeling computer, the modeled subsystem parameter to match the actual subsystem parameter; determining, using the modeling computer, a modeled-driven gas path parameter based on the modeled subsystem parameter; and diagnosing, using the modeling computer, an actuator failure or a module performance change based on a comparison of the modeled gas path parameter and the model-driven gas path parameter. - View Dependent Claims (9, 10, 11)
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12. A turbomachine fault partitioning arrangement, comprising:
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a modeling computer configured to establish a model of a turbomachine, the modeling computer further configured to determine a modeled gas path parameter and a modeled subsystem parameter; a controller module configured to identify a fault of the turbomachine based on a first comparison of the modeled gas path parameter to a measurement of an actual gas path parameter, and a second comparison of the modeled subsystem parameter to an actual subsystem parameter; and a controller is further configured to adjust the modeled subsystem parameter to match the actual subsystem parameter, to determine a modeled-driven gas path parameter based on the modeled subsystem parameter, and to diagnose an actuator failure or a module performance change based on a comparison of the modeled gas path parameter and the model-driven gas path parameter. - View Dependent Claims (13, 14, 15)
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Specification