Citation:
L. Gelman, S. Gorpinich, C. Thompson, Adaptive diagnosis of the bilinear
mechanical systems, Mechanical Systems and Signal Processing, Volume 23, Issue
5, July 2009, Pages 1548-1553
Abstract:
A generic adaptive approach is proposed for diagnosis of the bilinear mechanical
systems. The approach adapts the free oscillation method for bilinearity
diagnosis of mechanical systems. The expediency of the adaptation is proved for
a recognition feature, the decrement of the free oscillations. The developed
adaptation consists of variation of the adaptive likelihood ratio of the
decrement with variation of the resonance frequency of the bilinear system. It
is shown that in the cases of the frequency-independent and the frequency-
dependent internal damping, the adaptation is expedient. To investigate
effectiveness of the adaptation in these cases, a numerical simulation was
carried out. The simulation results show that use of the adaptation increases
the total probability of the correct diagnosis of system bilinearity.