Optimization of parameters of test influence for increase the sensitivity of vibrodiagnostics methods of dry friction force at forced oscillations of dynamic systems

Possibility of optimization the parameters of test influence for the purpose of increase the sensitivity of non-linear vibrodiagnostic methods of mechanical systems with dry friction by usage of sensitivity func-tion of diagnostic parameter to controllable parameter is considered. The example of a choice of the op-timal test influence providing essential magnification of sensitivity at determination of non-linear dissipa-tive parameters of dry friction at forced oscillations of dynamic system is shown. The considered ap-proach testifies to advantages of non-linear vibrodiagnostic methods in comparison with the linear.