Application of Operational TPA by Employing Several Measurement Systems and Accuracy Verification

Nozuchi, Yuta; Hirao, Takuya

doi:10.1299/jsmemecj.2020.j01224

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2021

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“…However, if the target product or structure is very large (e.g., over 100 m), using very long external cable for the connection is time and cost consuming and this may deteriorate the accuracy of OTPA. In a previous study, OTPA accuracy using several measurement systems linked by optical cable or GPS were actually investigated (Nozuchi, 2020). The result indicates that GPS link was not enough to obtain accurate contribution.…”

Section: Introductionmentioning

confidence: 99%

Operational transfer path analysis method using several measurement systems

Yamamoto

Nozuchi

2021

Mechanical Engineering Letters

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was better than the GPS linked system. However, we have to prepare special measurement systems equipped with optical cable connection. This also decrease applicability of OTPA. In this study, we then considered a post processing procedure to obtain accurate contribution of each reference point to the response point using several measurement systems without any special additional link system. Contribution calculation by OTPA using several measurement systems 2.1. OTPA calculation flowIn the original OTPA, the contribution of each reference point to the response point is obtained by multiplying each reference signal with the transfer function. The transfer function in this method is calculated using principal component regression method. The calculation procedure is shown in Fig. 1 (Noumura, 2006).

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Section: Introductionmentioning

confidence: 99%