Scientific journal
Scientific Review. Technical science
ISSN 2500-0799
ПИ №ФС77-57440

OPTIMIZATION OF DRY FRICTION NONLINEAR VIBRODIAGNOSTICS PROCEDURES IN DYNAMIC SYSTEM BY CRITERIA OF ACCURACY AND SENSITIVITY

Lushnikov B.V. 1
1 South-West State University
The article is devoted to improving the effectiveness of the procedures of non-linear vibration diagnostics by means of the optimization of the test impact or varying the parameters of the dynamic system to achieve the best sensitivity and accuracy. On the example of the method of identification of dry friction forces by the «jump» of acceleration equations of sensitivity functions and the maximum absolute error are received. This allows to optimize diagnostic procedure according to criteria of sensitivity and accuracy. The considered method of identification possesses invariance to operating forces of viscous friction, possibility of identification at incompleteness of information on a type of vibroexcitement, indiscriminateness to a source of fluctuations, simplicity of hardware realization, high efficiency and productivity.