摘要
研究初级源声路径和次级源声路径参数均未知的有源噪声控制 (ANC)问题。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 ,该方法利用带扇区的变结构技术提供附加的控制 ,该控制能强迫系统误差进入扇区内部 ,从而保证了系统的全局稳定性。给出了一种未知初级源声路径和次级源声路径参数的在线自适应学习算法。证明了闭环控制系统在 L yapunov意义下的稳定性。仿真结果表明 。
Active noise control (ANC) is studied for acoustic systems, in which both primary path and secondary path are unknown. An adaptive variable structure control with active noise is proposed for the acoustic system with unknown parameters. The variable structure control with a sector is used to provide a additional control, which forces the error of system enter inside the sector, so the global stability of the system can be held. An on line learning algorithm is proposed to identify the unknown parameters of primary path and secondary path. The stability of the closed loop system is proved in the Lyapunov's sense. A simulated example shows that the adaptive variable structure control with active noise is a very effective active noise control method.
出处
《振动工程学报》
EI
CSCD
北大核心
2002年第1期86-89,共4页
Journal of Vibration Engineering
基金
北京市教委资助科技项目 (编号 :99KJ4 4 )
关键词
有源噪声控制
变结构控制
自适应控制
反馈控制
稳定性
noise control
variable structure control
adaptive control
feedback control
stability
