Simplified control strategy for resonance reduction of primary system

Abstract

The tuned vibration absorber has become an effective device for vibration control in many engineering applications. However, using the tuned vibration absorber introduces a new resonance peak into the frequency response of the primary system and can actually increase the vibration of the primary system. We have proposed a control strategy based on variable mass adaptive tuned vibration absorber to reduce the resonance of the primary system in a previous study. However, this control plan is limited because it is difficult to obtain a key control parameter in some situations; therefore, it is difficult to implement in practical applications. Based on previous work, in this article, a simplified control strategy to reduce the resonance of the primary system with a vibration absorber attached is proposed that can easily obtain the approximation of this control parameter. A number of simulations and experiments have been carried out to test the performance of the new control plan. The results show that it is effective for reducing the resonance of the primary system with slight performance degradation of the vibration reduction, but the control parameter is much easier to obtain. The work is valuable for applications of the adaptive tuned vibration absorber on vibration control.