Prognostic and health management accuracy maintenance system and method
First Claim
1. An aircraft lubrication supply system, comprising:
- a motor operable, upon being energized from a power source, to rotate and supply a drive force;
a pump coupled to receive the drive force from the motor and operable, upon receipt thereof, to supply lubricant; and
a controller including an updatable system characterization model, the controller coupled to receive a pressure signal representative of lubricant pressure, a temperature signal representative of lubricant temperature, a speed signal representative of motor rotational speed, a motor current signal representative of current being drawn by the motor, a motor voltage signal representative of motor supply voltage, and one or more aircraft condition signals representative of one or more aircraft operating conditions, the controller operable, in response to each of the received signals, to (i) at least selectively energize the motor from the power source, (ii) generate simulation response data using the updatable system characterization model, and (iii) determine lubrication supply system health based, at least in part, on the simulation response data,wherein the controller is configured to allow the updatable system characterization model to be updated in-situ to reflect replacement of one or more aircraft lubrication supply system components.
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Accused Products
Abstract
A prognostic and health accuracy maintenance system and method for a system following on-site replacement of a component in the system is provided. A system characterization model of at least portions of the system is generated and embedded within a controller in the system. The system characterization model is adapted to receive a plurality of signals that are each representative of an operational parameter within the system and is responsive to each of the signals to generate simulation response data and determine system health based, at least in part, on the simulation response data. When a component within the system is replaced, a determination is made as to whether the replacement component exhibits one or more operational performance characteristics that differ from the component it replaced. If so, the embedded system characterization model is updated in-situ.
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Citations
11 Claims
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1. An aircraft lubrication supply system, comprising:
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a motor operable, upon being energized from a power source, to rotate and supply a drive force; a pump coupled to receive the drive force from the motor and operable, upon receipt thereof, to supply lubricant; and a controller including an updatable system characterization model, the controller coupled to receive a pressure signal representative of lubricant pressure, a temperature signal representative of lubricant temperature, a speed signal representative of motor rotational speed, a motor current signal representative of current being drawn by the motor, a motor voltage signal representative of motor supply voltage, and one or more aircraft condition signals representative of one or more aircraft operating conditions, the controller operable, in response to each of the received signals, to (i) at least selectively energize the motor from the power source, (ii) generate simulation response data using the updatable system characterization model, and (iii) determine lubrication supply system health based, at least in part, on the simulation response data, wherein the controller is configured to allow the updatable system characterization model to be updated in-situ to reflect replacement of one or more aircraft lubrication supply system components. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification