http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
스마트폰을 이용한 신호 처리 기반 벨트 텐션 측정 Application 개발
김승웅(Seungung Kim),박주표(Jupyo Park),최현석(Hyunsuk Choi),이흥택(Heungtaek Lee),김경래(Kyunglae Kim) 한국자동차공학회 2022 한국자동차공학회 학술대회 및 전시회 Vol.2022 No.11
Currently, automobile steering system is increasingly being converted to electrified parts. In the electric steering system, the proportion of parts designed to generate high Rack force against high load is used as a Belt-type R-EPS is increasing. Accordingly, in the event of a problem of Belt-type R-EPS part, a partial replacement is required in order to reuse the usable parts, which is accompanied by an adjustment and inspection in terms of belt tension. Belt Type R-EPS partial replacement is possible only if a repair shop owns a tension meter necessary for belt tension adjustment, so it is being implemented limitedly. In this study, among the methods that can cope with the tension meter used for belt tension inspection, possible method is being reviewed without a tension meter by using mobile phone sound source, furthermore by developing a mobile application, it can be used in a repair shop in near future.
래틀소음에 대한 스티어링 기어 Layout 영향성 연구
이을휘(Eulhwi Lee),박주표(Jupyo Park),하영민(Youngmin Ha),김경래(Kyounglae Kim) 한국자동차공학회 2021 한국자동차공학회 부문종합 학술대회 Vol.2021 No.6
Steering gear rattle noise is one of NVH quality problems raised by field customers and robust design should be taken into consideration to prevent rattle noise. In this study, steering gear layout effect on rattle noise has been investigated for yoke side design optimization. for this, vehicle interior noise and gear vibration have been measured when driving on test road with rough surface and also low frequency vibration of steering gear housing and tie rod were analyzed to understand the gear behavior which can account for rattle mechanism. As the result of this, the effect of steering gear layout for rattle noise has been identified and simple design concept for yoke side proposed to contain rattle noise according to gear layout.
CEPS 모터 축 불균형에 의한 충격성 소음 개선 연구
김민식(Minsik Kim),박주표(Jupyo Park),안영규(Younggyu An),방귀식(Gwisik Bang) 한국자동차공학회 2023 한국자동차공학회 부문종합 학술대회 Vol.2023 No.5
This paper aims to improve the impact noise generated by the motor rotation cycle due to the dynamic imbalance of the connection axis between the motor and the reducer, which is the driving part of the column-type electric power steering system (CEPS). In general, there are regulations on the roundness and concentricity of the rotating shaft to reduce static imbalance, and a rubber damping coupler is applied between the motors rotating shaft and the reducers worm shaft to absorb dynamic imbalance, but this study confirmed impact noise according to motor design specifications and production line assembly conditions. The impact on the design factor was reviewed according to the stiffness conditions of the bearing supporting the motor and reducer worm shaft and the damping coupler rigidity, and the impact on the assembly factor was reviewed by randomly implementing the Parallel, axial, and angular misalignment conditions that may occur during assembly between the column and motor. As a result, noise-disadvantageous influencing factors were improved in design, allowing more robust design specifications to be applied to impact noise.
마운팅 포스와 소음 전달함수를 이용한 실차소음 예측기법 연구
배성욱(Sungwook Bae),정윤혁(Yunhyuk Jeong),박주표(Jupyo Park) 한국자동차공학회 2022 한국자동차공학회 학술대회 및 전시회 Vol.2022 No.11
In terms of vehicle interior noise, which is one of the important requirements of customers in the development of a new steering system, to predict the operating noise generated during steering when vehicle idle condition, which is the biggest noise generation situation of R-EPS, is essential to improve and prepare countermeasures. The study was conducted on a method for measuring the force in the transfer path and the Noise Transfer function of the vehicle and predicting the vehicle interior noise. Through this, it is possible to check the actual vehicle noise level before vehicle development and to prepare countermeasures in advance.
SbW(Steer by Wire)시스템의 NVH 전달 특성 고찰
배성욱(Sungwook Bae),김민식(Minsik Kim),박주표(Jupyo Park) 한국자동차공학회 2021 한국자동차공학회 부문종합 학술대회 Vol.2021 No.6
SbW(Steer by Wire) is a steering system which consists of SFA and RWA and has no mechanical linkage between steering wheel and gear. Comparing with current EPS system, SbW with no mechanical linkage allows many kinds of advantage in vehicle design. For this reason, it is expected that SbW will be common in the future. In this study, NVH characteristics of SbW system has been investigated by comparing operational noise and rattle noise of RWA with that of Rack Type EPS system and also, noise transferring characteristics have been analyzed based on the frequency response function for operational and rattle noise. As the result of this, the contribution of I-shaft to NVH performance has been identified and design optimization of SbW system could be possible.
R-EPS 마운팅 부시 강성에 따른 작동소음 영향성 연구
정윤혁(Yunhyuk Jeong),배성욱(Sungwook Bae),박주표(Jupyo Park) 한국자동차공학회 2024 한국자동차공학회 부문종합 학술대회 Vol.2024 No.6
There are many factors that determine the quality of a vehicle, and NVH is one of the most important factor. R-EPS is a steering system that is mainly applied to premium vehicle models and requires high NVH performance. R-EPS system is installed on the vehicle frame with a mounting bush, which insulates vibration transmitted to the vehicle. This study deals with NVH Characteristics such as operational noise according to mounting bush stiffness. Natural frequency and vibration isolation effect of system according to the bush stiffness have been investigated and also, mounting bush design guide is proposed for NVH performance optimization.