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題名 | Development of an Adaptive H[feaf]and H垒Active Electronic Muffler=以適應H[feaf]及 H垒控制為基礎之主動式電子消音器 |
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作者姓名(中文) | 白明憲; 林至信; | 書刊名 | 中國機械工程學刊 |
卷期 | 18:4 1997.08[民86.08] |
頁次 | 頁341-348 |
分類號 | 446.014 |
關鍵詞 | 主動式; 電子消音器; 噪音控制; Adaptive H垒; Active noise control; Adaptive H[feaf]; |
語文 | 英文(English) |
中文摘要 | 本文提出了以適應H�砟徆A應H�帕偽臕扛澈e饋主動噪音控制技術。雖然傳統的H�� 及 H �店惆蹌僖鄏陵藻a消除寬頻與暫態噪音,然而其強韌性卻時常遭到質疑。 在本研究中 ,強韌性的問題可藉由引進一適應控制器而獲得改善,同時仍能保留傳統控制器的優點。我 們使用了一浮點數位信號處理器來實現所提出的控制方法。實驗的結果驗證了我們所提出的 方法對消除寬頻與暫態噪音確實是有效的。 |
英文摘要 | Feedfrward active noise control (ANC)techniques based on an adaptive H �� algorithm and an adaptive H �� algorithm are proposed in this paper. Although fixed H �� and H �� controllers are effectrive for attenuating broadband random noises and transient noises, their robustness of performance and stability against plant uncertainties or perturbations is often questioned. In the study, the robust problem is resolved by intruducing an adaptive compensator based on the normalized least-mean-square (NLMS) algorithm, while on the other hand the merits of the fixed contrllers are preserved. The algorithm are implemented by using a floating point digital singal processor (DSP). Extensive experimental investigaiotns justify the effectiveness of the proposed methods in suppressing broadband random noises and transient impact noises in a duct. |
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