Optimum tuning of a vibration neutralizer for global vibration control

This paper is concerned with optimization of the natural frequency of a vib ration neutralizer to minimize the global vibration of a structure at a sin gle frequency. The optimization is carried out using a quadratic minimizati on technique to determine the dynamic stiffness of the control device that is required, and then the optimum resonance frequency of the neutralizer is determined. It is shown that, with the exception of very low frequencies, an optimally adjusted vibration neutralizer can be as effective as an activ e device at a single frequency. Simulations are presented with a single neu tralizer on a beam to facilitate insight into the mechanisms of control.