Optimal interpolation of structural responses for active noise control

This paper presents a method for interpolating a sparse set of velocity measurements on the surface of a vibrating structure. The method is based on a novel integration of a physical model of the vibrating structure with an optimal signal recovery technique. The ability to achieve good interpolation performance with a small set of sensors makes this method important for many active noise control applications where an accurate measure of structural surface velocity is required to predict the radiated acoustic field. To demonstrate the applicability of this method in active control applications, a sample experiment is performed and results presented.