Adaptive remaining useful life balancing control system and method for multi-engine systems
First Claim
1. A method of adaptively managing a plurality of engines in a multi-engine system, each engine comprising hot gas components and non-hot gas components and having an associated engine control, each engine exhibiting a performance margin and a remaining useful life, and the engine performance margin of each engine has operational limits associated therewith, the method comprising the steps of:
- continuously, and in real-time, determining, with its associated engine control, a plurality of different degradation mechanisms for each of the plurality of engines;
continuously, and in real-time, determining, with its associated engine control, which of the determined degradation mechanisms is most limiting;
controlling each of the plurality of engines, with its associated engine control, based on the most limiting degradation mechanism, in a manner that the remaining useful lives of each engine are substantially equal;
selectively enabling, with its associated engine control, engine operations above predetermined nominal engine operating limits; and
upon enabling engine operations above the predetermined nominal engine operating limits, increasing the operational limits associated with the engine performance analysis,wherein the plurality of different degradation mechanisms of each engine are determined based on;
(i) the engine performance margin,(ii) modeled failure predictions of the hot gas components, and(iii) modeled failure predictions of the non-hot gas components.
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Abstract
A system and method of adaptively managing a plurality of engines in a multi-engine system, where each engine comprises hot gas components and non-hot gas components, and each engine exhibits a performance margin and a remaining useful life, includes continuously, and in real-time, determining a plurality of different degradation mechanisms for each of the plurality of engines, and continuously, and in real-time, determining which of the determined degradation mechanisms is most limiting. The engines are controlled, based on the most limiting degradation mechanism, in a manner that the remaining useful lives of each engine are substantially equal. The plurality of different degradation mechanisms of each engine are determined based on the engine performance margin, modeled failure predictions of the hot gas components, and modeled failure predictions of the non-hot gas components.
22 Citations
17 Claims
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1. A method of adaptively managing a plurality of engines in a multi-engine system, each engine comprising hot gas components and non-hot gas components and having an associated engine control, each engine exhibiting a performance margin and a remaining useful life, and the engine performance margin of each engine has operational limits associated therewith, the method comprising the steps of:
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continuously, and in real-time, determining, with its associated engine control, a plurality of different degradation mechanisms for each of the plurality of engines; continuously, and in real-time, determining, with its associated engine control, which of the determined degradation mechanisms is most limiting; controlling each of the plurality of engines, with its associated engine control, based on the most limiting degradation mechanism, in a manner that the remaining useful lives of each engine are substantially equal; selectively enabling, with its associated engine control, engine operations above predetermined nominal engine operating limits; and upon enabling engine operations above the predetermined nominal engine operating limits, increasing the operational limits associated with the engine performance analysis, wherein the plurality of different degradation mechanisms of each engine are determined based on; (i) the engine performance margin, (ii) modeled failure predictions of the hot gas components, and (iii) modeled failure predictions of the non-hot gas components. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system for adaptively managing a multi-engine system, comprising:
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a plurality of engines, each engine comprising hot gas components and non-hot gas components, and each engine exhibiting a performance margin and a remaining useful life, the engine performance margin of each engine having operational limits associated therewith; a plurality of engine controls, each engine control in operable communication with each other, and associated with a different one of the plurality of engines, each engine control coupled to selectively receive an enablement signal and configured to; continuously, and in real-time, determine a plurality of different degradation mechanism for at least its associated engine; continuously, and in real-time, determine which of the determined degradation mechanisms for at least its associated engine is most limiting; control operations of at least its associated engine, based on the most limiting degradation mechanism, in a manner that the remaining useful lives of each engine are substantially equal; and upon receipt of the enablement signal, to (i) enable engine operations above predetermined nominal engine operating limits and (ii) increase the operational limits associated with the engine performance analysis, wherein the plurality of different degradation mechanisms of each engine are determined based on; (i) the engine performance margin, (ii) modeled failure predictions of the hot gas components, and (iii) modeled failure predictions of the non-hot gas mechanical components. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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17. A method of adaptively managing a first engine and a second engine in a twin-engine system, the first and second engines each comprising hot gas components and non-hot gas components, and the first and second engines each exhibiting a performance margin and a remaining useful life, the method comprising the steps of:
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continuously, and in real-time, determining, in a first engine control, a first engine performance-based degradation mechanism for the first engine, the first engine performance-based degradation mechanism based on the performance margin of the first engine; continuously, and in real-time, determining, in a second engine control, a second engine performance-based degradation mechanism for the second engine, the second engine performance-based degradation mechanism based on the performance margin of the second engine; continuously, and in real-time, determining, in the first engine control, a first engine hot-gas-component-based degradation mechanism for the first engine, the first engine hot-gas-component-based degradation mechanism based on modeled failure predictions of hot gas components within the first engine; continuously, and in real-time, determining, in the second engine control, a second engine hot gas component-based degradation mechanism for the second engine, the second engine hot-gas-component-based degradation mechanism based on modeled failure predictions of hot gas components within the second engine; continuously, and in real-time, determining, in the first engine control, a first engine non-hot-gas-component-based degradation mechanism for the first engine, the first engine non-hot-gas-component-based degradation mechanism based on modeled failure predictions of non-hot gas components within the first engine; continuously, and in real-time, determining, in the second engine control, a second engine non-hot-gas-component-based degradation mechanism for the second engine, the second engine non-hot-gas-component-based degradation mechanism based on modeled failure predictions of non-hot gas components within the second engine; continuously, and in real-time, determining, in the first and second engine controls, which of the determined degradation mechanisms is most limiting; controlling the first and second engines, using the first and second engine controls, respectively, based on the most limiting degradation mechanism, in a manner that the remaining useful lives of the first and second engines are substantially equal; selectively enabling, in the first and second engine controls, engine operations of the first and second engines, respectively, above predetermined nominal engine operating limits; and upon enabling engine operations above the predetermined nominal engine operating limits, increasing the operational limits associated with the first and second engine performance analyses.
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Specification