“…4 Linear Analysis of Simplified Model The overall system, including the mechanical part, induction motors and the controller is a highly nonlinear complex system of the high order (cf. (Galitskaya and Tomchina, 2012;Fradkov et al, 2013;Tomchina, 2018;Tomchina, 2020;Fradkov et al, 2021)). However, as stated in (Fradkov et al, 2021), in medium and high frequency ranges, the so-called the averaging property, which is widely exploited in the vibrational mechanics is valid.…”