Performance analysis of mechanical vibration suppression controlsystem for motor drives with elastic load based on frequency response

摘要

One of the primary concerns in industrial motor drive systems isthe suppression of the vibration caused by the elasticity of mechanicalload. This paper is intended to clarify the conditions required toobtain the desirable damping by a simple control system through theanalysis of the frequency response of a two-mass control system,considering the plant of left-coprime factorized form. The paper alsopresents some useful findings for practical design of the vibrationsuppression control, showing that if the above-mentioned conditions aresatisfied, sufficient control performance can be obtained by a twodegrees of freedom controller of the same structure as that for rigidload, and that we are compelled to reduce the stability margin in thevibration suppression control where the anti-resonant frequency andresonant frequency are near to each other