Non-linear Vibration Protection Systems Phase-frequency Characteristics Measurement Method and its Research for Polyharmonic Model of Vibration Signal

Results of testing of algorithm for estimation of phase-frequency characteristics of vibration protection systems for existence of significant non-linear distortions are presented. Estimations of maximal error are obtained for phase shift changes from 0.2 to 0.0001 angle degree in dependency on ADS capacity and amount of sampling. The algorithm is realized as m-files of MatLab software.