Adaptive control for a gas turbine engine
First Claim
1. A method for adaptively controlling a gas turbine engine, comprising:
- generating model parameter data as a function of prediction error data, which model parameter data includes at least one model parameter that accounts for off-nominal operation of the engine and at least one model parameter that accounts for nominal operation of the engine, wherein the engine is configured for an airplane propulsion system;
at least partially compensating an on-board model for the prediction error data using the model parameter data;
generating model term data using the on-board model, wherein the on-board model includes at least one model term that accounts for the off-nominal operation of the engine, the model term comprises a mathematical equation, and the model term data comprises one or more terms of the mathematical equation;
respectively updating one or more model parameters and one or more model terms of a model-based control algorithm with the model parameter data and model term data; and
generating one or more effector signals using the model-based control algorithm.
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Abstract
A method for controlling a gas turbine engine includes: generating model parameter data as a function of prediction error data, which model parameter data includes at least one model parameter that accounts for off-nominal operation of the engine; at least partially compensating an on-board model for the prediction error data using the model parameter data; generating model term data using the on-board model, wherein the on-board model includes at least one model term that accounts for the off-nominal operation of the engine; respectively updating one or more model parameters and one or more model terms of a model-based control algorithm with the model parameter data and model term data; and generating one or more effector signals using the model-based control algorithm.
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Citations
23 Claims
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1. A method for adaptively controlling a gas turbine engine, comprising:
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generating model parameter data as a function of prediction error data, which model parameter data includes at least one model parameter that accounts for off-nominal operation of the engine and at least one model parameter that accounts for nominal operation of the engine, wherein the engine is configured for an airplane propulsion system; at least partially compensating an on-board model for the prediction error data using the model parameter data; generating model term data using the on-board model, wherein the on-board model includes at least one model term that accounts for the off-nominal operation of the engine, the model term comprises a mathematical equation, and the model term data comprises one or more terms of the mathematical equation; respectively updating one or more model parameters and one or more model terms of a model-based control algorithm with the model parameter data and model term data; and generating one or more effector signals using the model-based control algorithm. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An adaptive control system, comprising:
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an airplane propulsion system including a gas turbine engine; a control module adapted to generate one or more effector signals using a model-based control algorithm in response to receiving one or more control signals, and to respectively update at least one model parameter and at least one model term of the model-based control algorithm using model parameter data and model term data; an estimator adapted to generate the model parameter data as a function of prediction error data, wherein the model parameter data includes at least one model parameter that accounts for off-nominal operation of the engine of the airplane propulsion system and at least one model parameter that accounts for nominal operation of the engine of the airplane propulsion system; and a modeling module adapted to generate the model term data using an on-board model, and to update the on-board model with the model parameter data to at least partially compensate for the prediction error data, wherein the on-board model includes at least one model term that accounts for off-nominal operation of the engine, the model term comprises a mathematical equation, and the model term data comprises one or more terms of the mathematical equation. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification