Combined feedback-feedforward active control of sound in a room
Combined feedback-feedforward active control of sound in a room
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DOI：
10.1121/1.423925
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发表时间：
1998-11
影响因子：
2.4
通讯作者：
Wen-Kung Tseng;B. Rafaely;S. J. Elliott
中科院分区：
文献类型：
--
作者：
Wen-Kung Tseng;B. Rafaely;S. J. Elliott
本文提出了一种具有反馈-前馈组合配置的有源噪声控制系统，当房间中主要源的位置和方向性未知时，该系统可能很有用。使用组合系统，避免了预先在前馈或反馈系统配置之间进行选择的需要。根据在一个7×6×3 m ~ 3房间中不同主源位置的测量结果，计算了前馈、反馈和组合主动控制系统的最佳性能。内模控制（IMC）与最优维纳滤波一起被用于最优控制器的设计中，该最优控制器针对每个主源位置进行，并且还包括鲁棒稳定性，以保证控制器在面对设备不确定性时的稳定性。单独的前馈控制器的性能比单独的反馈控制器的性能更依赖于主源的位置，但组合系统的性能总是优于eit控制器。
This paper presents an active noise control system with a combined feedback–feedforward configuration, which may be useful when the location and directivity of the primary source in a room are not known. Using the combined system, the need to choose between a feedforward or a feedback system configuration beforehand is avoided. The optimum performance of feedforward, feedback, and the combined active control systems have been calculated from measurements taken in a 7×6×3 m3 room with various primary source positions. Internal model control (IMC) together with optimal Wiener filtering are used in the design of the optimum controllers, which was performed for each primary source position and also included robust stability to guarantee the stability of the controllers in face of plant uncertainty. The performance of the feedforward controller alone was much more dependent on the position of the primary source than that of the feedback controller alone, but the combined system always performed better than eit...