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Noise and vibration measurements on a cogenerator plant
- Citation Author(s):
-
AndreaToscani
University of ParmaEmanueleVoltoliniUniversity of ParmaDanielPinardiUniversity of ParmaMarcoBinelliUniversity of ParmaAngeloFarinaUniversity of Parma - Submitted by:
- Andrea Toscani
- Last updated:
- Thu, 06/06/2024 - 08:15
- DOI:
- 10.21227/wv3e-a206
- Data Format:
- License:
98 Views- Categories:
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Abstract
Active noise control (ANC) aims at reducing a noise source at a listening point by destructive interference with a reversed phase noise emitted by one or more controlling devices. These data are from an active vibration control (AVC) system applied to a wall of the metal box of a cogeneration plant. It makes use of electro-dynamic shakers as controllers and accelerometers as error and reference signals. The algorithm employed for generating the cancelling signals is a single-reference, single-input multiple-output (MIMO) Filtered-X Normalized Least Mean Square (FxNLMS). It has been implemented in a Virtual Studio Technology (VST) plugin. The effectiveness of the solution is first demonstrated in a laboratory experiment. Then, the results obtained on the cogenerator are presented, showing remarkable performance also in the real-world application, with a reduction of 17.5 dB, 13.2 dB, and 11.8 dB at the frequencies 100 Hz, 112.5 Hz, and 125 Hz, respectively.
These files contain the .WAV audio results of an active vibration control (AVC) system applied at first to a single panel in a laboratory environment,
then to a wall of the metal box of a cogeneration plant.
Files:
1. Lab_test_ANC_ON-OFF_10s_Tone100Hz: contains the result of the laboratory environment when the disturbance noise is a pure tone at 100 Hz.
The ANV system is ON for the first 10 s, and then is turned OFF (clearly visible in the waveform).
2. Lab_test_ANC_ON-OFF_10s_White_Noise: contains the result of the laboratory environment when the disturbance noise is a white noise low pass-filtered at 500 Hz.
The ANV system is ON for the first 10 s, and then is turned OFF (clearly visible in the waveform).
3. Cogenerator_ANC_off: contains the vibration data of the cogenerator plant metal box when the ANV system is OFF.
4. Cogenerator_ANC_on: contains the vibration data results of the cogenerator plant metal box when the ANV system is ON.
Audio specification:
- mono audio;
- Fs = 48 kHz;
- 32 bit float.
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