A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Distributed shell control with a new multi-DOF photostrictive actuator design
With the photovoltaic effect and the converse piezoelectric effect, the lanthanum-modified lead zirconate titanate (PLZT) actuator can transform the narrow-band photonic energy to mechanical strain/stress the photodeformation effect This photodeformation process can be further used for non-contact precision actuation and control in various structural, biomedical and electromechanical systems. Although there are a number of design configurations of distributed actuators, e.g., segmentation and shaping, been investigated over the years, this study is to explore a new actuator configuration spatially bonded on the surface of shell structures to enhance the spatial modal controllability. A mathematical model of a new multiple degree-of-freedom (multi-DOF) photostrictive actuator configuration is presented first, followed by the photostrictive/shell coupling equations of a cylindrical shell structure laminated with the newly proposed multi-DOF distributed actuator. Distributed microscopic photostrictive actuation and its contributing components of a one-piece actuator and the multi-DOF actuator are evaluated in the modal domain. Effects of shell's curvature and actuator's size are also evaluated. Parametric analyses suggest that the new multi-DOF distributed actuator, indeed, provides better performance and control effect to shell actuation and control. This multi-DOF configuration can be further applied to actuation and control of various shell and non-shell structures.
Distributed shell control with a new multi-DOF photostrictive actuator design
With the photovoltaic effect and the converse piezoelectric effect, the lanthanum-modified lead zirconate titanate (PLZT) actuator can transform the narrow-band photonic energy to mechanical strain/stress the photodeformation effect This photodeformation process can be further used for non-contact precision actuation and control in various structural, biomedical and electromechanical systems. Although there are a number of design configurations of distributed actuators, e.g., segmentation and shaping, been investigated over the years, this study is to explore a new actuator configuration spatially bonded on the surface of shell structures to enhance the spatial modal controllability. A mathematical model of a new multiple degree-of-freedom (multi-DOF) photostrictive actuator configuration is presented first, followed by the photostrictive/shell coupling equations of a cylindrical shell structure laminated with the newly proposed multi-DOF distributed actuator. Distributed microscopic photostrictive actuation and its contributing components of a one-piece actuator and the multi-DOF actuator are evaluated in the modal domain. Effects of shell's curvature and actuator's size are also evaluated. Parametric analyses suggest that the new multi-DOF distributed actuator, indeed, provides better performance and control effect to shell actuation and control. This multi-DOF configuration can be further applied to actuation and control of various shell and non-shell structures.
Distributed shell control with a new multi-DOF photostrictive actuator design
Verteilte Steuerung von Schalentragwerken mit einem neuen photostriktiven Aktor mit mehreren Freiheitsgraden
Yue, H.H. (author) / Sun, G.L. (author) / Deng, Z.Q. (author) / Tzou, H.S. (author)
Journal of Sound and Vibration ; 329 ; 3647-3659
2010
13 Seiten, 11 Bilder, 4 Tabellen, 20 Quellen
Article (Journal)
English
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