http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
가속도계 위치 변경에 따른 현가장치 TPA 개선에 대한 연구
강연준(YeonJune Kang),김준구(Jun-gu Kim),민동우(Dong-woo Min),송현진(David P. Song),이강덕(Kang-duk Ih) 한국소음진동공학회 2016 한국소음진동공학회 학술대회논문집 Vol.2016 No.4
This study is about how to improve accuracy when Transfer Path Analysis (TPA) is applied to a multi-link vehicle suspension. TPA is generally employed to estimate road noise and NVH of a vehicle suspension. In this case, however, TPA has some spatial constraints on suspension system. To put it another way, there is no room for sensor attachment and excitation because of its compact structure. Therefore, the inaccurate setting of the sensor and excitation, which is potentially problematic, could not acquire high reliability on Frequency Response Function (FRF) with accuracy and consistence. To deal with the obstacles, the experiment was conducted by locating an accelerometer between linkages or arms and bushes, which connect them to a sub-frame, on the way of energy transfer from road vibration. Also, using TPA with the data on acceleration from the placement of accelerometer to the target at the mounting point of the sub-frame, this study compares the result of this new approach with that of the existing TPA and identifies its efficiency.
Transmissibility를 이용한 Input Boundary 변화에 따른 차량 시스템의 Characteristic에 대한 연구
강연준(Yeonjune Kang),김준구(Jungu Kim),송현진(David P. Song),민동우(Dongwoo Min) 한국소음진동공학회 2015 한국소음진동공학회 학술대회논문집 Vol.2015 No.10
The purpose of this study is to apply and experimentally verify the concept of the transmissibility on the vehicle system. In the study, the concept of transmissibility is applied to the vehicle cabin sound pressure and acceleration data at the knuckle of suspension. Furthermore, the systems’s transmissibility characteristics of the system are experimentally analyzed by replacing wheels and tires of a vehicle. It is also proved by the research that the transmissibility properties of the system does not change, although the input boundary of the system is changed. Additionally, the study suggests that transmissibility can be one of the parameters for evaluating the behavior of the system.