关键词: 自动控制技术 , 结构一声耦合系统 , μ-synthesis , 鲁棒控制 , 有源结构声控制

Abstract: Based on the μ-synthesis theory, a robust control model of structural-acoustical coupling system for a three-dimensional rectangular enclosure was established, and a design method of robust μ-synthesis controller was proposed. The robust performance problem of the structural-acoustical coupling system was transformed into the robust stability problem of an augment system via the introduction of a fictive uncertainty module. The robust stability controller for tnis augment system was solved by standard D- K iteration. Simulation results indicate that μ-synthesis can provide a good disturbance rejection and is more robust to parameter variations than H∞ controller. In comparison with the previous studies, this paper designs an active robust controller for the structural-acoustical coupling system by using the μ-synthesis theory, and demonstrates the merit of μ-synthesis controller.

Key words: automatic control technique , structural-acoustical coupling , μ-synthesis , robust control , ac?tive structure acoustic control