Multiple modal vibration control of a beam using photostrictive actuators

Jingjing Lian; Shijie Zheng

doi:10.1117/12.921070

12 April 2012 Multiple modal vibration control of a beam using photostrictive actuators

Jingjing Lian, Shijie Zheng

Proceedings Volume 8409, Third International Conference on Smart Materials and Nanotechnology in Engineering; 84091P (2012) https://doi.org/10.1117/12.921070
Event: Third International Conference on Smart Materials and Nanotechnology in Engineering, 2011, Shenzhen, China

Abstract

The lanthanum-modified lead zirconate titanate(PLZT) actuator activated by high-energy lights can introduce actuation and control effects without hard-wired connections. A novel controlling algorithm for multi-modal vibration control of beam structures via photostrictive actuators is proposed in this paper. Two pairs of photostrictive actuators are laminated with the beams and the alternation of light irradiation is in accordance with the changing of the corresponding modal velocity direction. A binary-coded GA is used to optimize the location and size of photostrictive actuators to maximize the modal force index and guarantee the overall modal force index induced by two pairs of photostrictive actuator is positive. The control effect of multiple vibration modes of the beam under irradiation of set light intensity/variable light intensity is analyzed. Numerical results demonstrate that the method is rational and efficient, and the use of strategically positioned actuator patches can control the first two bending modes that dominate the structural vibration effectively.

Citation Download Citation

Jingjing Lian and Shijie Zheng "Multiple modal vibration control of a beam using photostrictive actuators", Proc. SPIE 8409, Third International Conference on Smart Materials and Nanotechnology in Engineering, 84091P (12 April 2012); https://doi.org/10.1117/12.921070

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