Lavor-saving input power identification method in actual operation using experimental SEA

Abstract

Input power identification using experimental SEA requires measurement of all subsystems. However, it is sometimes difficult to measure the energies in operation in real mechanical structures. Therefore, this paper proposes a method to identify the input power during operation using only the measurable subsystem energy, excluding the subsystem energy that is difficult to measure. This method is referred to as the "lavor-saving method". This method focuses on subsystems with zero input power. This method allows the input power to be identified even if the number of subsystems whose energy is measured is reduced. This paper discusses the effect of the accuracy of the SEA model and its applicability, including the choice of measurement subsystems. The results show that to ensure the accuracy of input power identification in the lavor-saving method, it is necessary to measure the input subsystem to be evaluated. Finally, the results of the application of the method to the identification of the input power from the road surface to the tire in rolling tests are reported.