Active Noise Control for Radiated Noise Caused by Shell Vibration of Small Heater Pump Compressor; [소형 히터펌퍼 압축기의 쉘 진동 기인 방사소음에 대한 능동소음제어]

초록

The HVAC system in an autonomous bus generates middle-frequency vibroacoustic noise, mainly in the 100 to 600 Hz range, due to the shell vibration of the compressor. This noise, which is dominated by harmonics of the rotation frequency of compressor shaft and blower fan, is not only clearly perceptible but also contributes to passenger discomfort and negatively impacts the perceived quality of tlie vehicle. To mitigate this issue, an active noise control(ANC) system was developed. While the commonly used filtered-X least mean squared(FXLMS) algorithm is effective for noise control in reciprocating compressors, to enhance the effectiveness of ANC, a momentum algorithm was implemented, offering a lower residual error and faster convergence rate compared to FXLMS. This led to the development of a dynamic system-based ANC algorithm, which significantly unproved noise reduction. Copyright © 2025 KSAE.

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