Partitioning of turbomachine faults
AssigneeUnited Technologies Corporation
InventorsSampath K. Yerramalla, William Donat, Ravi Rajamani
Life of this patent
Estimating the term…
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.
Claims15
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.
A method of partitioning gas turbine engine faults, comprising:
- 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.
A turbomachine fault partitioning arrangement, comprising:
- 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.
Dependencies are inferred from the claim text.