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Active Front Steering을 이용한 차량 거동 안정성 향상에 관한 연구
노태봉(Taebong Noh),정성준(Sungjune Chung),김재구(Jaegoo Kim),최정락(Jungrak Choi),송준규(Jungyu Song) 한국자동차공학회 2006 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Recently steering technology focuses on not only driver뭩convenience, fuel efficiency, environment friendliness but also improved vehicle stability. However EPS(Electric Power Steering) basically has constant steering ratio therefore it has a limitation to control vehicle stability. Meanwhile SBW(Steer-by-Wire) system could have all of the advantages of EPS and control vehicle behavior with better controllability, but SBW can not reach to mass-production due to reliability in case of failures, high cost for the complicated fault tolerant means and a legal restriction that steering wheel must be mechanically linked to the front wheel. Therefore AFS(Active Front Steering) has been widely studied in the automotive industry, which can provide variable gear ratio and improved vehicle stability.
노태봉(Taebong Noh),김성주(Sungju Kim),김재석(Jaesuk Kim),이인식(Insik Lee) 한국자동차공학회 2013 한국자동차공학회 부문종합 학술대회 Vol.2013 No.5
Intelligent Parking Assist System in this paper is confined to the device that reduces the driver’s efforts by carrying through the following three steps instead of driver: searching the available parking space using ultrasonic sensors, calculating parking course to empty parking lot, and steering automatically with using Electric Power Steering (EPS) system. This paper considers the development of algorithm for searching function to improve driver’s usability in Intelligent Parking Assist System. It is suggested the left/right combination searching, parking mode auto detection and bidirectional communication HMI. This algorithm has been validated the feasibility in the Hardware-in-the-loop simulator.
지속가능한 도시평가지표의 적용 가능성 검토 -GCI, EPI, CBI를 중심으로-
윤형두 ( Hyerngdu Yun ),박진영 ( Jinyoung Park ),최태봉 ( Taebong Choi ),최인태 ( Intae Choi ),노태환 ( Taihwan Noh ),한봉호 ( Bongho Han ),김명진 ( Myungjin Kim ) 한국환경영향평가학회 2015 환경영향평가 Vol.24 No.6
This study was intended to develop Korean Environmental Sustainable City Index (ESCI) so that local governments can examine and identify urban environment issues and then come up with a policy to improve the environment and urban biodiversity for cities. Green City Index (GCI), Environmental Performance Index (EPI), and City Biodiversity Index (CBI) which have used worldwide were analyzed. Based on the result of analysis, evaluation indicators of ESCI were finally a total of 20 indicators under four categories, which are native biodiversity, living environment, ecosystem services, and governance and management. Then, five cities with biotope mapping and evaluation index were selected to apply ESCI for evaluation. In order to apply ESCI, local governments need to accumulate basic data. There should be a policy which requires local governments to build data for biotope mapping so that the rate of natural area, ecological network and permeable land surface can be evaluated. Indicators must be applied to be compliant with scale of the city and level of data building gradually.
김재석(Jaesuk Kim),유관선(Kwansun You),노태봉(Taebong Noh),최치권(Chigun Choi) 한국자동차공학회 2014 한국자동차공학회 학술대회 및 전시회 Vol.2014 No.11
Smart Parking Assistance System(SPAS) is confined to the device that reduces the driver’s efforts by carrying through the following three steps instead of driver: searching the vacant space with ultrasonic sensors, calculating parking course to detected parking lot, and steering automatically with using Electric Power Steering (EPS) system. Now, the manufactures are developing the automatic parking assist system that control automatically not only EPS, but driveline, brake and transmission to increase the driver’s convenience and safety. In this pater, Remote Smart Parking Assist System(R-SPAS) based on ultrasonic sensors is integrated EPS system, driveline, brake and transmission. And it is controlled by smart device automatically. Human Machine Interface (HMI) and smart device display are designed to inform the user of vehicle state, operation, sound. It helps the user visibility and convenience. Especially, we applied the safe functions to avoid collision those although the user doesn’t recognize around obstacles such as a passing vehicle, cart and pedestrian. We verified that performance in parallel and perpendicular park scenarios using a simulation program. Also, the vehicle test results obtained from various environments on smart devices have shown the reliable performance, safety and convenience of R-SPAS.
유관선(Kwansun You),김성주(Sungju Kim),김재석(Jaesuk Kim),노태봉(Taebong Noh),이인식(Insik Lee) 한국자동차공학회 2011 한국자동차공학회 학술대회 및 전시회 Vol.2011 No.11
Autonomous parking assistance system in this paper is confined to the device that reduces the driver’s efforts by carrying through the following three steps instead of driver: searching the vacant lateral space with ultrasonic sensors, calculating parking course to empty parking lot, and steering automatically with using Electric Power Steering (EPS) system. This paper considers the development of algorithm after the first step in autonomous parking assistance system. It is developed the technique that makes parking path having continuous steering profile avoiding collisions with the surroundings found in parallel and perpendicular parking circumstances. And it is designed the technique tracking the path based on simple feedforward-feedback control. The techniques of path-planning and path-tracking are embodied on embedded MCU and tested at the real parking conditions composed of the cars and other objects like as cone, tree, wall and curbstone.