並列摘要
People have requested for a stricter standard for the quietness of the consumer electronics, and the cooling module is usually the major source of noise in an electronic product. The fan noise is the primary source in a cooling module. Generally, the fan noise can be categorized into two major types by the nature of its source: vibro-acoustics and aero-acoustics. Both are quite different in the ways of analysis and solutions. This study applies the vibration-acoustics coupling technology to identify the noise source as vibro-acoustics or aero-acoustics. By comparing the measurements of a sound level meter and a Polytec scanning Doppler laser vibrometer, we can isolate the vibro-acoustical noise and aero-acoustical noise as well as identify the vibration source as structure harmonics or caused by other mechanical parts. We also apply the acoustical simulations to identify the key factor that can help minimize the aero-acoustical noise.
延伸閱讀
- 吳孝文、王敬仁、余傳濬（2014）。冷卻風扇噪音特性分析。載於中華民國振動與噪音工程學會（主編），中華民國振動與噪音工程學會論文集（頁119-122）。中華民國振動與噪音工程學會。https://www.airitilibrary.com/Article/Detail?DocID=a0000192-201406-201504290030-201504290030-119-122
- 王彥昇（2014）。散熱風扇流量及結構分析〔碩士論文，國立臺北科技大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0006-2407201414461300
- 林筱增、周錫明、趙繼舜、潘冠呈、陳仁郁（2004）。風扇噪音頻譜特性量測與分析。載於中華民國振動與噪音工程學會（主編），中華民國振動與噪音工程學會論文集（頁142-149）。中華民國振動與噪音工程學會。https://doi.org/10.30028/CSSVANNUAL.200406.0142
- 沈銘秋、陳文亮、邱煥男、鄭進全、黃擴樺（2012）。電腦散熱風扇之性能與噪音改良研究。機械技師學刊，5(1)，51-56。https://doi.org/10.6208/JPME-2012-01-07
- Genuit, K. (1993). New Aspects of Measuring Noise and Vibration. In 中華民國振動與噪音工程學會 (Ed.), 中華民國振動與噪音工程學會論文集 (pp. 31-41). 中華民國振動與噪音工程學會. https://doi.org/10.30028/CSSVANNUAL.199306.0031