Systems and methods for model-based sensor fault detection and isolation

A sensor and fault technology, applied in the direction of test/monitoring control system, general control system, control/regulation system, etc., can solve the problems of missed detection of sensor faults, wrong fault detection, etc., and achieve the effect of improving reliability

Inactive Publication Date: 2009-02-11
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In fact, when the utilized system model does not match the actual system operation, then missed sensor faults and false fault detections often occur

Method used

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  • Systems and methods for model-based sensor fault detection and isolation
  • Systems and methods for model-based sensor fault detection and isolation
  • Systems and methods for model-based sensor fault detection and isolation

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Embodiment Construction

[0019] The invention will be described more fully hereinafter with reference to the accompanying drawings, in which embodiments of the invention are shown. However, the invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to Those skilled in the art. Like reference numerals refer to like elements throughout.

[0020] Embodiments of the invention are described below with reference to block diagrams and flowchart illustrations of systems, methods, apparatus, and computer program products. It will be understood that each block of the block diagrams and flowchart illustrations, and combinations of blocks in the block diagrams and flowchart illustrations, respectively, can be implemented by computer program instructions. These computer program instructions can be load...

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Abstract

Systems and Methods for model-based sensor fault detection and isolation. The systems and method may include receiving a plurality of measured tuning inputs associated with an operating parameter of an engine, providing a plurality of parameter estimation modules that utilize one or more component performance maps having adjustable knobs to generate model outputs, where each parameter estimation module is configured independently of a respective one of the operating parameters of the engine, and where each parameter estimation module generates the model outputs based upon fundamental inputs associated with the engine. The systems and methods may further include calculating residual values for each parameter estimation module, adjusting knobs of each parameter estimation module, and determining that a sensor associated with a measured tuning input or a fundamental input is faulty based at least in part upon values of the knobs and residual values.

Description

technical field [0001] Aspects of the invention relate generally to sensor fault detection and isolation, and more particularly to model-based sensor fault detection and isolation for engines such as gas turbine engines. Background technique [0002] The control and operation of current gas turbine engines relies heavily on information received from sensors. Specifically, the data received from the sensors is used by the control model to determine whether any control adjustments are to be made. However, the control model does not operate the gas turbine engine effectively when one or more sensors fail or otherwise provide inaccurate data. [0003] Current fault detection and isolation methods are only effective when the utilized system model matches actual system operation. In practice, missed sensor faults and false fault detections often occur when the utilized system model does not match the actual system operation. Therefore, there is a need in the industry for model-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B13/04G05B23/02F02C9/00
CPCG05B23/0254G05B9/02
Inventor M·韦尔希宁T·A·赫利G·C·弗里德里克
Owner GENERAL ELECTRIC CO
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