| Research Experiences for Undergraduates in Automotive Technologies |
Proposed Project: Independent Component Analysis (ICA)
Independent component analysis (ICA) is a new, non-linear adaptive signal
processing technique used to unmix vibration and acoustical measurements into
independent source channels. In order to perform in-situ health monitoring of
gearboxes and bearing assemblies, uncorrupted signatures of these machinery
components are required. To obtain these uncorrupted measurements, costly modal
analysis techniques are currently used to identify optimal accelerometer
placement. ICA, by contrast, produces these unmixed signatures from mixed
measurements based on the principal of information maximization. This project
will gather data from a roller bearing machine, where several machinery
components signatures are simultaneously measured. The measurements contain
several machinery component signatures that are mixed in an unknown way. This
data will then serve as input to the ICA algorithms to test the separability of
the mixed machinery components: including faulty bearing assemblies. This
would eliminate the costly modal analysis that accompanies most health
monitoring implementations for sensor placement.
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