Power flow in a simple linear active vibration control system and system vibration control efficiency

摘要

The contribution deals with the power flow in a simple linear active vibration control system. The problem is treated in the complex plane in similar way as in the electricity. A single degree of freedom linear passive oscillatory system combined with an ideal "sky-hook" type active actuator is analyzed using the mechanical impedance approach. Further a possible approach to the ideal mechanical efficiency of the active part is introduced. This approach may improve the insight into the costs and benefits of the active vibration control system in power terms especially concerning actuator ideal mechanical efficiency and power demand.