http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
조향 시스템 안전평가기준 도출을 위한 운전자 조향휠 파지력 연구
홍석일(Seokil Hong),김도환(Dohwan Kim),구태윤(Taeyun Koo),조성근(Seongguen Cho),김경래(Kyunglae Kim) 한국자동차공학회 2021 한국자동차공학회 부문종합 학술대회 Vol.2021 No.6
The Steer-by-Wire system is expected to be an essential part of autonomous vehicles. The characteristic of the SbW system without mechanical connections requires ISO 26262 functional safety assessments to be carried out as they require high-level safety standards. Current vehicle safety assessments such as Hazard Metric Test and Safety Validation Test define the lateral acceleration or lateral deviation as criteria, however the results may be affected by the steering wheel grip force of each driver. Therefore, this study analyzed steering wheel grip force during driving of 56 subjects, and presented the objective safety assessment criteria. This study is expected to be used as a assessment criteria in the future when conducting Safety Validation Tests.
기어드 모터의 저진동설계를 위한 수치적 · 실험적 고찰
김성훈(Seong-hun Kim),유서윤(Seo-Yoon Ryu),김상현(Sanghyun Kim),홍석일(Seokil Hong),이인혁(Inhyeok Lee),정철웅(Cheolung Cheong) 한국소음진동공학회 2016 한국소음진동공학회 학술대회논문집 Vol.2016 No.4
A geared motor is a combination of motor and reduction gear unit. This is widely used in a lot of mechanical devices such as cameras, automobiles. The vibration and noise problem of the geared motor is one of most critical factors to determine its quality. In this paper, the vibration characteristics of geared motors used for power interruption are numerically and experimentally investigated. First, preliminary experiment was carried out to identify main noise sources between the gears and the motor, showing that the gears contributes dominantly. Then, the effects of surface treatments on the vibration of a geared motor are experimentally assessed by comparing the original geared model and the heat-treated model. The surface-treated gears show less vibration than the original ones. Subsequent numerical simulations for the modal analysis of the original one are carried out to characterize its natural frequencies and the corresponding modes shapes. Based on this results, a low-vibration design is devised and its validity is confirmed by comparing numerical simulation result of harmonic analysis with that of the original.