8 May 1995 Distributed transducer shading via spatial gradient electrodes
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Abstract
A general means of shading, or spatial gain-weighting, induced-strain distributed transducers is developed using spatially-tailored electrode patterns to facilitate the modally-structured measurement and control of structural components over a wide bandwidth. The electrode patterns consist of an array of parallel rectangular `line' patches of unequal width and spacing. For panels, the pattern is 2D. A numerical optimization procedure is described for selecting the number, width, and pattern of these electrodes given a specification of desired modal coupling over a bandwidth of interest. The design method may be used to develop electrode patterns for large-area piezopolymer transducers for ASAC sensing, or for designing piezoceramic chip actuator arrays. Beam and plate examples are presented.
© (1995) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Shawn Edward Burke, Jeanne M. Sullivan, "Distributed transducer shading via spatial gradient electrodes", Proc. SPIE 2443, Smart Structures and Materials 1995: Smart Structures and Integrated Systems, (8 May 1995); doi: 10.1117/12.208308; https://doi.org/10.1117/12.208308
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