Indirect Measurement of Random Force Spectra on Fractional Horse Power Reciprocating Compressor Shell
نویسندگان
چکیده
In the design of the small hermetic compressor, the forces acting on the compressor shell are important parameters to study for noise and vibration control. However, the input forces to the shell cannot be measured directly. In this paper, random force spectra on compressor shell has been measured indirectly with in-situ · vibration responses and system information. Three existing techniques of indirect force measurement including direct inverse, principal component analysis and regularization have been compared. It has been shown that multiple vibration responses are essential for correct estimation of the random force spectra. It has also been shown that relatively higher forces are transmitted through spring paths to the compressor shell.
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