Scientia Silvae Sinicae ›› 1999, Vol. 35 ›› Issue (5): 99-102.
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Meishuang Liu,Xibin Dong,Jiyao Hu
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Abstract:
Noise in cabin of truck endangers the driver's health directly and leads to many physiological diseases.It can also bring about traffic accidents and influence work efficiency.In our country, log-hauling trucks are all heavy trucks.Because of trucks themselves and using conditions, noise in cabin is very loud. Some tests were made based on the investigation of noise in cabins of two kinds of trucks that were often used in China.The model of testing main noise source in cabins was founded under many inputs and one output by spectrumand coherent funcetion theory.After tests noise in cabins was evaluated and the correction of the model was verified.The noise in cabins and its resource were also defined.
Key words: Noise, Noise source, Spectrum and coherent function
Meishuang Liu,Xibin Dong,Jiyao Hu. TEST AND ANALYSIS OF NOISE IN CABIN OF LOG-HAULING TRUCKS[J]. Scientia Silvae Sinicae, 1999, 35(5): 99-102.
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Fig.1
Noise occu ring system inside driver's cab"
Fig.2
Input and output system model of driver's noise"
Table 1
Test selection of running conditions"
Table 2
Selection of parking test conditions"
Table 3
Test points positions of sensors"
Table 4
The relation of noise beside driver's ears and vehicles speed"
Table 5
The sound pressure level of frequency doubling beside two trucks driver's ears"
Table 6
The noise spectrum beside two trucks driver's ears"
Fig.3
Curve diagram"
Table 7
The contributing rate of each input to total output"
