Time-Variant Frequency Response Function Measurements on Weakly Nonlinear, Arbitrarily Time-Varying Systems Excited by Periodic Inputs

@article{Pintelon2015TimeVariantFR,
  title={Time-Variant Frequency Response Function Measurements on Weakly Nonlinear, Arbitrarily Time-Varying Systems Excited by Periodic Inputs},
  author={Rik Pintelon and Ebrahim Louarroudi and John Lataire},
  journal={IEEE Transactions on Instrumentation and Measurement},
  year={2015},
  volume={64},
  pages={2829-2837}
}
In quite some applications, the linear dynamics of the system under test evolve over time in a smooth nonperiodic manner. The dynamic behavior of such systems is uniquely described by the time-variant frequency response function (TV-FRF). However, since most real-life systems behave nonlinearly to some extent, it is important to detect and quantify the… CONTINUE READING