Method and a system for detecting and locating an adjustment error or a defect of a rotorcraft rotor
First Claim
1. A method of detecting and identifying a defect or an adjustment error of a rotorcraft rotor using an artificial neural network (ANN), the rotor having a plurality of blades and a plurality of adjustment members associated with each blade, wherein the network (ANN) is a supervised competitive learning network having an input to which vibration spectral data measured on the rotorcraft is applied, the network outputting data representative of which rotor blade presents a defect or an adjustment error or data representative of no defect, and where appropriate data representative of the type of defect that has been detected in which a learning algorithm is used of the supervised self-organizing network type, and the output space is one of the group consisting of i) a square mesh, ii) a hexagonal mesh, and iii) an irregular mesh.
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Abstract
The invention relates to a method of detecting and identifying a defect or an adjustment error of a rotorcraft rotor using an artificial neural network (ANN), the rotor having a plurality of blades and a plurality of adjustment members associated with each blade; the network (ANN) is a supervised competitive learning network (SSON, SCLN, SSOM) having an input to which vibration spectral data measured on the rotorcraft is applied, the network outputting data representative of which rotor blade presents a defect or an adjustment error or data representative of no defect, and where appropriate data representative of the type of defect that has been detected.
11 Citations
23 Claims
- 1. A method of detecting and identifying a defect or an adjustment error of a rotorcraft rotor using an artificial neural network (ANN), the rotor having a plurality of blades and a plurality of adjustment members associated with each blade, wherein the network (ANN) is a supervised competitive learning network having an input to which vibration spectral data measured on the rotorcraft is applied, the network outputting data representative of which rotor blade presents a defect or an adjustment error or data representative of no defect, and where appropriate data representative of the type of defect that has been detected in which a learning algorithm is used of the supervised self-organizing network type, and the output space is one of the group consisting of i) a square mesh, ii) a hexagonal mesh, and iii) an irregular mesh.
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22. A method of detecting and identifying a defect or an adjustment error of a rotorcraft rotor using an artificial neural network (ANN), the rotor having a plurality of blades and a plurality of adjustment members associated with each blade, wherein the network (ANN) is a supervised competitive learning network having an input to which vibration spectral data measured on the rotorcraft is applied, the network outputting data representative of which rotor blade presents a defect or an adjustment error or data representative of no defect, and where appropriate data representative of the type of defect that has been detected in which a learning algorithm is used of the supervised self-organizing network type, and in which a square mesh is used in the output space.
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23. A method of detecting and identifying a defect or an adjustment error of a rotorcraft rotor using an artificial neural network (ANN), the rotor having a plurality of blades and a plurality of adjustment members associated with each blade, wherein the network (ANN) is a supervised competitive learning network having an input to which vibration spectral data measured on the rotorcraft is applied, the network outputting data representative of which rotor blade presents a defect or an adjustment error or data representative of no defect, and where appropriate data representative of the type of defect that has been detected in which a learning algorithm is used of the supervised self-organizing network type, and in which a hexagonal mesh is used in the output space.
Specification