Identification of Anchor Inertia Motor Moment of Direct Current and Loading in Experimental Vibration Installation for Chaotic Dynamics Study

Abstract

Purpose of research. The article is devoted to development and approbation of parameters' assessment technique of anchor inertia moments of direct current motor with an independent excitation (DCM IE) and its loadings used in laboratory vibration installation for chaotic dynamics research.Methods. The DCM IE mathematical model and technique description for assessment of anchor inertia moment with loading as a result of parametrical identification on the basis of approximation integrated curve of current runaway and implementation of spectral analysis is described in the article. Joint dynamics modeling of Maxon RE25 electric motor with electric and mechanical part was done in Matlab Simulink system. Mechanical part was constructed in MSC Adams. Technique operability of parametrical identification was checked on the basis of machine experiment results.Results. Structure and general view of information and measuring system of laboratory vibration installation for chaotic dynamics research on the basis of input-output NI USB-6009 module is presented. Dispersal curves and an amplitude range of current received during experiment for definition of anchor inertia moments of Maxon RE25 engine and debalances are analysed. Calculation of anchor inertia moments and debalances are made according to an offered technique. Calculation of relative errors in comparison with passport value is also made.Conclusion. According to the results of carried out parallel experiments it is found out that experiments can be made according to Kokhren's criterion. And the error of DCM anchor inertia moments definition is no larger than 5%. Therefore it can also be used for calculations with sufficient accuracy of debalances inertia moments.