Optimal Control of Random Vibration by the Use of an Active Dynamic Vibration Absorber (Theoretical Considerations on the Control Performance and the Robustness)

In this study, the control characteristics of two kinds of dynamic vibration absorber (D. V. A.), an active D. V. A. with a feedback link alone and an active D. V. A. with feedback and feedforward links, are considered and compared to those of a passive D. V. A. Particularly, the relationships between the control performance and the criterion, the mass ratio or the input characteristics are investigated. Furthermore, in order to examine the robustness of the three kinds of D. V. A., the influences of changes of system parameters and input characteristics on the control performances are clarified. As a result, the fundamental design data on the active dynamic vibration absorbers are obtained.