Suppressing low frequency resonance oscillations of a two-mass system by active damping

Mechanical couplings between electrical motors and mechanical loads or processes usually provide rather low stiffnesses. This situation often results in resonance problems due to the interdependencies between the inertias of motors and loads coupled by elastic couplings. This paper describes the possibility of suppressing low frequency resonance oscillations by an active method instead of mechanical damping equipment. A special filter is integrated into the drive control loop. This paper shows the optimisation of the filter parameters to obtain good damping of the mechanical system.