Nonlinear Active Vibration Absorber Using HBM Method

摘要

This paper presents analysis of a nonlinear time-delayed active vibration absorber attached to a nonlinear single degree of freedom (DOF) spring-mass-damper primary system. In the proposed model, a piezoelectric stack actuator is attached to reduce the vibration of the primary system, which undergoes external harmonic and base excitation. The analysis is carried out by considering acceleration feedback of the primary mass. Harmonic balance method (HBM) is used to obtain the solution of the governing equation of motion of the system for the primary resonance condition. The proposed design for the absorber is fail-safe design, which requires less voltage for actuating actuator to absorb the vibration of the primary mass.