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디젤 차량의 Audible Steering Shudder에 대한 고찰
황인선(Inseon Hwang),유성상(Sungsang You),최은수(Eunsoo Choi) 한국자동차공학회 2007 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
In these days, the demand for the diesel passenger vehicles has increased in the market that is comprised with the majority of gasoline passenger vehicles. In spite of that, diesel engines have many problems in vibration and noise than gasoline engines. Steering shudder, it is one of various NVH problems in passenger vehicles, lead up to the quality of the vehicles because of steering wheel contacts driver's hand directly. This paper describes audible steering shudder that is raised a new issue in the development of diesel passenger vehicles. In this paper, the outbreak factor and transfer path of audible steering shudder is introduced and studied for the reduction of shudder.
DFSS를 이용한 Auto Door Lock Actuator Sound 개선에 대한 실험적 고찰
황인선(Inseon Hwang),김준우(Junwoo Kim),최은수(Eunsoo Choi) 한국자동차공학회 2009 한국자동차공학회 학술대회 및 전시회 Vol.2009 No.11
In these days, the passenger vehicles usually have equipped various comfort & security systems to appeal to customers. And then, the importance of emotional quality gives added weight to the noise performance of those system devices. Auto door lock system is one of the most popular devices for passenger convenience and security. This paper shows developing process about the operating sound of auto door lock actuator. We used DFSS process to develop the auto door lock actuator sound and confirmed the improvement.
PZT 활용 2 차전지 충전상태 예측을 위한 SPICE 시뮬레이션
황인선(Inseon Hwang),이우식(Usik Lee) 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.11
This paper describes an approach to convert into electrical energy from ambient mechanical vibration by piezoelectric materials and to store the transformed energy with secondary battery. And we simulate the process of storing energy with SPICE using by equivalent circuit model of secondary battery. Subsequently, an experimental investigation is verified the SPICE simulation.
황태진(Taejin Hwang),황인선(Inseon Hwang),김준우(Junwoo Kim),최은수(Eunsoo Choi) 한국자동차공학회 2010 한국자동차공학회 부문종합 학술대회 Vol.2010 No.5
This paper shows vehicle level experimental results of some enablers to reduce fuel pump noise in passenger car. The enablers for noise reduction are considered by reducing of noise source and isolating of structure path. In this paper, the test results show wide frequency area at vehicle interior noise. The test results in this paper can introduce some enablers and present the effectiveness of each enabler.
DFSS를 이용한 Door Inside Handle 작동음 저감에 대한 고찰
황태진(Taejin Hwang),황인선(Inseon Hwang),이근수(Keunsoo Lee),김인동(Indong Kim) 한국소음진동공학회 2011 한국소음진동공학회 학술대회논문집 Vol.2011 No.4
In these days, the passenger vehicles usually have equipped various comfort & security systems to appeal to customers. And then, the importance of emotional quality gives added weight to the noise performance of those system devices. Door inside handle system is one of the most popular devices for passenger. This paper shows developing process about the operating sound of door inside handle. We used DFSS process to develop the door inside handle snap back sound and confirmed the improvement.
SBR(Seat Belt Reminder)Sound의 가청도와 음질에 대한 고찰
김준우(Junwoo Kim),황인선(Inseon Hwang),최은수(Eunsoo Choi) 한국자동차공학회 2008 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Now a days. the emotional quality of vehicle is a very important evaluation standard. SBR sound needs not only emotional quality but also safety performance. In this thesis, we considered two important factors, which are audibility and sound quality as a standard of a suitable SBR sound and gave guide line to make SBR sound according to frequency and amplitude which are main factors of audibility and sound quality. When the frequency of SBR sound is low, the suitability of SBR sound follows the trend of audibility. On the contrary, when the frequency of SBR sound is high, the suitability follows the trend of frequency preference. Therefore, ideal SBR sound is need to have at least 4㏈ audibility and the frequency of about 1000㎐. In this thesis, we considered only frequency and amplitude to determine good SBR sound. From now on, the pattern. harmonize chime. etc. the factors which influence sound quality will be studied.