噪声有源变结构控制

VARIABLE STRUCTURE CONTROL OF ACTIVE NOISE

研究有源噪声控制 (ANC)问题 ,将滑模变结构技术引入有源噪声控制领域。提出了一种基于滑模变结构技术的噪声有源自适应控制方法 ,给出了一种在线参数自适应学习算法 ,证明了闭环控制系统在Lyapunov意义下的稳定性。仿真结果表明 ,基于滑模变结构技术的噪声有源自适应控制比传统的Filter -X控制更为有效。

The active noise control (ANC) is studied.The variable structure based control technology is introduced to the active noise control. An adaptive variable structare control of active noise is derived for the acoustic system with uncertain parameters. An on line learning algorithm is proposed for identifying the uncertain parameters. The stability of closed loop system is proved in the Lyapunov's sense. A simulate example is given to show that the adaptive variable structure control of active noise is more effective than the Filter X control.