LMS Test.Lab Multi-reference Transfer Path Analysis supports contribution analysis for multi-source noise and vibration issues. The complex analysis of multiple partially-correlated sources is reduced to multiple analyses of independent, uncorrelated sources by using singular value decomposition. Each individual uncorrelated source can be investigated using the LMS Test.Lab Transfer Path Analysis solution. Structure-borne and airborne paths can be analyzed together or separately, using frequency response functions and operational data. The final analysis will recombine the results of the individual sources to investigate their combined effect on the target location.
LMS Test.Lab Multi-reference Transfer Path Analysis is particularly adapted to road noise analysis. It helps engineers understand the noise source when the car is on the road, independently from the engine noise. In the first step, Principle Component Analysis (PCA) decomposes the road noise into principle components. Transfer path analysis will then be applied on single decorrelated components in a second step.
The convenient workflow of LMS Test.Lab Multi-reference Transfer Path Analysis even helps users perform principle component analysis and transfer path analysis sequentially. Operational forces can be accurately defined using the complex stiffness and the matrix inversion methods.
The solution offers easy management and analysis of large databases. It greatly simplifies analysis of the structure in different operating conditions and provides easy data comparison.
