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AUTOSAR Platform을 이용한 XCP on FlexRay 구현
최광호(Gwangho Choi),맹상우(Sangwoo Maing),이은진(Eunjin Lee),홍선호(Seonho Hong) 한국자동차공학회 2013 한국자동차공학회 부문종합 학술대회 Vol.2013 No.5
Calibration and Measurement are mainly necessary with various options during developing & production of the ECU for cars. Automotive company uses different protocol for calibration, measurement and flashing. However, ASAM announce XCP which supports various transmission media to establish standard. This study focused on the implementation of next generation network system based on XCP on FlexRay. Master part of PC and slave part of ECU application will implement XCP on FlexRay. Evaluation of the brake system application to ESC for remarks during production and development is also considered.
FlexRay 프로토콜에서 플랫폼 구성 변수의 자동 생성에 관한 연구
양재성,박지훈,이석,이경창,최광호,Yang, Jae-Sung,Park, Jee-Hun,Lee, Suk,Lee, Kyung-Chang,Choi, GwangHo 대한임베디드공학회 2012 대한임베디드공학회논문지 Vol.7 No.1
Recently, FlexRay was developed to replace controller area network (CAN) protocol in chassis networking systems, to remedy the shortage of transmission capacity and unsatisfactory real-time transmission delay of conventional CAN. FlexRay network systems require correct synchronization and complex scheduling parameters. However, because platform configuration register (PCR) setting and message scheduling is complex and bothersome task, FlexRay is more difficult to implement in applications than CAN protocol. To assist a network designer for implementing FlexRay cluster, this paper presents an analysis of FlexRay platform configuration register and automatic generation program of PCR. To demonstrate the feasibility of the automatic generation program, we evaluated its performance using experimental testbed.
이상훈(Sanghun Lee),이새봄(Saebhom Lee),최광호(Gwangho Choi),최선미(Sunmi Choi),류연희(Yeonhee Ryu) 한국한의학연구원 2010 한국한의학연구원논문집 Vol.16 No.3
Objectives : Quality control of the needle tips and prevention of pollutions are important factor for safe and effective acupuncture treatment. Ear acupuncture needle is made by 3 companies in Korea, and used to treat for obesity or smoking in clinic frequently, but the Korean industrial Standard is proposed most recently. In spite of the importance, there has been little study about that. Moreover, there was no study about ear acupuncture needle. Methods : We investigated the current condition of needle shape and pollution about the tips and body of the ear acupuncture needle under the stereoscopic microscope. Samples are selected 100 pieces from 300 pieces randomly in each company. Results : The substandard needles are classified into four groups and counted 1. Normal condition (55.3%), 2. Scratch on the surface (14.0%), 3. Malformation of tips (19.3%), 4. Pollution of body (4.3%), 5. Multiple Substandard (7.0%). In the case of including type 2 as a standard needle, normal rate of A company was 81% when B was 76%, and C was 51%. Conclusion : The substandard ear acupuncture needles can induce local side effects such as needling pain or itching. Furthermore, it can disturb the proper effect of acupuncture treatment. We hope that this study can help to improve quality of ear acupuncture and reduce substandard rate for safe and effective ear acupuncture treatment.
김성신(Sungshin Kim),박영욱(Youngwook Park),최광호(Gwangho Choi) 한국자동차공학회 2017 한국자동차공학회 부문종합 학술대회 Vol.2017 No.5
A new type of front strut insulator is proposed, which can enhance the both R&H and NVH performance. As I must decrease shore hardness of rubber for the isolaton of vibration, I delete the longitudinal voids from rubber and change the shape of main plate from circle to oval. And for the harmonized performace between ride and handling, I change the stiffness of zdirection which the static stiffness of bump motion is softer than that of rebound direction.