Active Structural Acoustic Control and Smart Structures

摘要

This final technical report for the DARPA/ONR Advanced Submarine Technology (AST)Program concerns recent VPISU research in the area of active structural acoustic control with active/adaptive structures. The material is divided into progress in the areas of structural acoustics, actuators, sensors, and control approaches. Due to the coupled nature of the problem, considerable effort throughout the VPISU program has been given to the interaction of these areas with each other, and their integration. The focus is analytical and experimental investigations of active control of sound radiation from simple panels as well as panels with some added complexity using point and distributed control forces and sensors on the plates. The results presented show that significant progress has been made towards controlling structurally radiated noise by active/adaptive means applied directly to the structure. The demonstrated technology is highly applicable to acoustic quieting in advanced submarine designs.