• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2007년도 추계학술대회논문집
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• pp.291-296
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• 2007

This study presents the evaluation process for door module. Its objective evades the resonance generated at module plate due to the operation of window regulator motor. For this study, the design improvement process is composed of experimental methods having three steps. First step is modal analysis at door assembly status for acquisition of dynamic characteristics which are modal frequency and damping. Second step is a vibration experiment to get the test mode considered an efficiency of window regulator motor. Last step is a vibration measurement by the form of $6{\times}6$ array on module plate. A vibration measurement of 6x6 array form can be got to three analysis results which are a transfer path of vibration using cross correlation function, a vibration map using OA level and a contribution by frequency band using coherent output power spectrum on module plate. These results are applied to SDM(structural dynamic modification) for design improvement to get around the resonance on module plate by the excitation of window regulator motor.

• 한국소음진동공학회논문집
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• 제17권11호
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• pp.1093-1101
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• 2007

This study presents the design improvement process for door module. Its objective evades the resonance generated at module plate due to the operation of window regulator motor. For this study, the design improvement process is composed of experimental methods having three steps. First step is modal analysis at door assembly status for acquisition of dynamic characteristics which are modal frequency and damping. Second step is a vibration experiment to get the test mode considered an efficiency of window regulator motor. Last step is a vibration measurement by the form of $6{\times}6$ array on module plate. A vibration measurement of $6{\times}6$ array form can be got to three analysis results which are a transfer path of vibration using cross correlation function, a vibration map using OA level and a contribution by frequency band using coherent output power spectrum on module plate. These results are applied to SDM(structural dynamic modification) for design improvement to get around the resonance on module plate by the excitation of window regulator motor.

• 한국산학기술학회논문지
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• 제8권1호
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• pp.18-24
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• 2007

진동원을 포함하고 있는 제품이 불량품일 경우 비정상 소음진동이 발생하게 된다. 최근 자동차 부품업계 등에서 생산되는 제품의 진동소음 관련 품질을 판별하는데 있어 주로 사람의 청각을 사용하여 판별하는 소음감각 판정방법을 개선하여 제품의 진동신호를 계측 및 분석하여 판별하는 시스템의 도입이 시도되고 있다. 이러한 추세에 따라 Window Regulator Module에 대한 판별과정에 자동화된 품질 판단시스템의 필요성이 대두되고 있다. 이를 위해 LabVIEW를 이용한 진동모니터링 프로그램을 개발하였으며, 가속도계를 이용하여 Sector gear 이음부분의 진동신호를 계측 및 분석하여 모니터링 하였다. 양품과 불량품의 진동신호 특성을 분석하여 모니터링 함으로써 보다 정확하게 양품여부를 판명할 수 있게 되었다.