Abstract
Coupled resonators have been used in a number of sensing applications, with increasing use in micro/nano electromechanical sensors. This paper reports a simple method for identifying the sensing member in a nearest neighbor coupled array of such resonators. Resonance frequencies measured from the response of any one member of the array are used to identify any other sensing resonator. This is achieved by using a mathematical analysis involving eigenvectors of the manufactured array and the traces of the perturbed system matrix. The technique is experimentally verified using an array of identically designed MEMS sensors. Errors introduced due to eigenvector symmetry, finite frequency resolution, and numerical computation are also investigated.
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