Power regeneration in active vibration isolation systems

Nikola Vujic; Donald J. Leo; Douglas K. Lindner

doi:10.1117/12.483957

31 July 2003 Power regeneration in active vibration isolation systems

Nikola Vujic, Donald J. Leo, Douglas K. Lindner

Proceedings Volume 5052, Smart Structures and Materials 2003: Damping and Isolation; (2003) https://doi.org/10.1117/12.483957
Event: Smart Structures and Materials, 2003, San Diego, California, United States

Abstract

The power requirements imposed on an active vibration control system are quite important to the overall system design. In order to improve the efficiency we analyze different feedback control strategies which will provide electrical energy regeneration. The active isolation system is modeled in a state-space form for two different types of actuators: a piezoelectric stack actuator and a linear electromagnetic (EM) actuator. During regenerative operation, the power is flowing from the mechanical disturbance through the electromechanical actuator and its switching drive into the electrical storage device (batteries or capacitors). We demonstrate that regeneration occurs when controlling one or both of the flow states (velocity and/or current). This regenerative control strategy affects the closed loop dynamics of the isolator which sees its damping reduced.

Citation Download Citation

Nikola Vujic, Donald J. Leo, and Douglas K. Lindner "Power regeneration in active vibration isolation systems", Proc. SPIE 5052, Smart Structures and Materials 2003: Damping and Isolation, (31 July 2003); https://doi.org/10.1117/12.483957

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