Semi-active vibration control using piezoelectric actuators in smart structures

2009, Volume 4, Issue 3

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Frontiers of Mechanical Engineering >> 2009, Volume 4, Issue 3 doi: 10.1007/s11465-009-0068-z

Semi-active vibration control using piezoelectric actuators in smart structures

Aeronautic Science Key Laboratory for Smart Materials and Structures College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

Available online: 2009-09-05

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Abstract

The piezoelectric materials, as the most widely used functional materials in smart structures, have many outstanding advantages for sensors and actuators, especially in vibration control, because of their excellent mechanical-electrical coupling characteristics and frequency response characteristics. Semi-active vibration control based on state switching and pulse switching has been receiving much attention over the past decade because of several advantages. Compared with standard passive piezoelectric damping, these new semi-passive techniques offer higher robustness. Compared with active damping systems, their implementation does not require any sophisticated signal processing systems or any bulky power amplifier. In this review article, the principles of the semi-active control methods based on switched shunt circuit, including state-switched method, synchronized switch damping techniques, and active control theory-based switching techniques, and their recent developments are introduced. Moreover, the future directions of research in semi-active control are also summarized.

Keywords

smart structure ; semi-active method ; vibration control ; piezoelectric actuator

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