クーロン摩擦の作用する多自由度系の同定法

概要

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In previous papers the authors presented a new technique of identifying nonlinear multi-degree-of-freedom systems, and showed that the technique can be used for identifying systems with smooth nonlinearity. To see whether this technique can be generalized and used for identifying systems with non-smooth nonlinearity, some systems subjected to Coulomb's damping forces are taken up. First a generalization for identifying such systems is presented. Then, using data generated numerically from the equations of motion of the systems, the applicability of the technique is checked. It is shown that the technique can in fact be used for identifying the systems. It is also shown that under noisy measurements a good accuracy can be obtained if the excitation frequencies are chosen near resonant points and if the first or second order terms are retained in the Fourier series expansion necessary in the process of identification.
一般社団法人日本機械学会の論文
1988-08-25