http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
EMB 시스템 성능 모니터링 GUI 설계 및 Failsafe 개발환경 구축
김도군(Dokun Kim),최혜린(Hyerin Choi),최근수(Geunsoo Choi),황의찬(Eouchan Hwang) 한국자동차공학회 2023 한국자동차공학회 학술대회 및 전시회 Vol.2023 No.11
The EMB(Electro-Machanical Brake : Dry type Brake By Wire) sytem is actively researching and developing an Eco-friendly system, where friction braking is directly controlled by electrical actuator installed at each corner wheel.This system is expected to be a faster response brake system than the conventional brake system because it is controlled by electrical signals.However, since there are no mechanical backup devices in the EMB system, it is crucial to ensure functional safety and robust electrical signals.And, To comply with ISO26262 Standard, The EMB system, which has numerous controllers, requires an extensive study that focuses on monitoring failures and developing diagnostic methods. This paper presents a novel approach to developing failsafe logic, using a suggested prototype GUI program based on LabVIEW.This suggested GUI makes it easier for developers to inspect and monitor faults.The software of the EMB system is checked to feasibility first by using the suggested GUI program and The suggested GUI is initially used by checking feasibility the EMB systems software on the vehicle. Subsequently, it is verified by monitoring intented fault injections and the vehicles response.
샤시통합제어용 제동시스템 임베디드 소프트웨어 아키텍쳐 설계
김도군(Dokun Kim),이재현(Jeahyun Lee),김환득(Hwandeuk Kim),김용섭(Yongsup Kim) 한국자동차공학회 2020 한국자동차공학회 학술대회 및 전시회 Vol.2020 No.11
As the electronics of the automobile industry develops, it gets to be actively researching on integration and convergence technical part. Especially, it is more aggressive on chassis systems in vehicles because of various requirements. The chassis control system of future automobiles is expected that electronic components are not only to be improved functionally but also to be integrated complicatedly. There is very advantageous in terms of high performance of a safe and convenient vehicle. This ultimately leads to be able to reduce unnecessary redundant sensors, so car makers could get price competitiveness effectively. Chassis control integration methods can be divided into three methods: (1) hardware integration, (2) software integration, and (3) hardware and software integration. All three methods should always consider ECU integration on hardware, and MCU-related design applied to the integrated ECU is an important consideration in software architecture design. In this paper, the second method, software integration method is adopted to be built in the ECU of the braking system among Chassis domain controllers. The ECU of brake system is the most suitable as the chassis integration ECU. Because it processes the important sensor signals of vehicles such as wheel sensors and direction sensors. This paper proposes the software architecture design for the software integration collaboration between supplier and vehicle manufacturer. And the proposed software architecture is verified by EILS and vehicles.
오토사 이식을 위한 친환경 제동 시스템의 프로토 소프트웨어 개발
김도군(DoKun Kim),신현성(HyunSung Shin),설용철(Yong Chul Seol),정완교(Wan Kyo Jung) 한국자동차공학회 2019 한국자동차공학회 학술대회 및 전시회 Vol.2019 No.11
The automobile industries is forecasted to struggle for researching and developing green vehicles such as EV(Electric Vehicle),HEV(Hybrid Electric Vehicle), PHEV(Plug-in HEV) and FCEV(Fuel Cell Vehicle). One of advantages with ECOfriendly vehicles is able to use regenerative braking force. It means that it increases energy efficiency with cooperative controls of regenerative braking to reduce the heat loss due to the friction brake. Therefore, Fuel cell brake system needs basically not only conventional brake function but support function for regenerative braking. In addition to, the safety system like a brake system be required more accurate and complicated software for its stability. As a result, the software of ECO-friendly brake system gets heavy and complex. This paper proposed the optimized proto software(SW) for fuel cell brake system. The proto SW’s architecture and compensation designs are proposed to preempt verified application SW and to reduce development duration without AUTOSAR platform. The proposed proto SW based on firmware is verified enough on the rig. Before migration with AUTOSAR platform SW, Application SW is able to be verified and confirmed under the proto SW. As a result, it makes to reduce SW development period because Application SW can be developed in parallel with AUTOSAR platform.
김도군(Dokun Kim),박홍주(Hongjoo Park),박규성(Kyusung Park),김선형(Seonhyeong Kim),이근호(Geunho Lee) 제어로봇시스템학회 2015 제어·로봇·시스템학회 논문지 Vol.21 No.2
In hybrid or electric vehicles, the hydraulic brake system must be controlled cooperatively with the traction motor for regenerative braking. Recently, a motor driven brake system with a PMSM (Permanent Magnet Synchronous Motor) has replaced conventional vacuum boosters to increase regenerative power. Unlike industry motor controls, additional source codes such as functional safety are essential in automotive applications to meet ISO26262 standards. Therefore, the control logic execution time increases, which also causes an extension of the motor current control period. The increased current control period makes precise motor current control challenging inhigh speed ranges where the motor is driven by high frequency. In this paper,a PWM update strategy and a time delay compensation method are suggested to improve current control and system performance. The proposed methods are experimentally verified.
Brake By Wire 선행개발 소프트웨어 설계 및 검증
김도군(Dokun Kim),최근수(Geunsoo Choi),김종성(Jongsung Kim),임동환(Dongwhan Im) 한국자동차공학회 2022 한국자동차공학회 학술대회 및 전시회 Vol.2022 No.11
The vehicle brakes have been improved and developed over the years.The easy generating of wheel brake force and the variety of vehicle has created a need for a new evolution in the brake system. As this reason, the Brake By Wire(BBW) System has been studied as next genertaion brake system. The BBW’s perfomance is far superior to the conventional hydraulic brakes because it maneuvers directly wheel brake force under the motor control. And BBW is more friendly environment and cycle time reduction in assembly line to compare with conventinal one since there is no hydraulic fluid line. However, It is more complexible and more important to manage and design a lot of kinds software because there consists of many controller such as a Center ECU and 4 Wheel ECUs.In addtion, the softwares on each ECUs need to be operated simultaneously under control periodic domain. The interface design through CAN FD between a Center ECU and 4 Wheel ECUs considers critically the signal define, lengh and communicaiton periodic. In this paper, it presents the proto software design fot BBW and it introduces a proto software architecture, configuration and feasibility. The proposed software is used to find out software requirements and development plans for the future research. the proposed software is verified with HILS and vehicles.
PMSM과 DC 모터를 이용한 Steer-by-wire 시스템 ECU 개발
김도군(Dokun Kim),황준섭(Junsub Hwang),김호식(Hosik Kim),윤석찬(Suckchan Yoon) 한국자동차공학회 2004 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Abstract Conventional steering systems have physical mechanical connections. Unfortunately, these s)'stems in automotive are not only inefficient systems against engine horsepower but hazard sources fur driver on the front-end collision. To resolve these problems, this paper presents Steer-by-Wire (SBW) system which is controlled by only electronic signals without mechanical connections. Mechanical operations of the current hydraulics power steering are replaced to actuate two motors in this SBW system. Therefore, vacuum booster, fluid and hoses are eliminated.<br/> SBW systems bring hope in creating steering systems for most vehicles, which will still be equipped with power steering. In this SBW system, PMSM as a Rack Motor and DC motor as a reaction motor are controlled by ECU with information from all sensors.<br/> This paper presents ECU which has DSP TMS320LF2406APZ, two kinds of motor drives and sensor interfaces, besides their functions were verified through HILS and real vehicle experiment.<br/>
좌/우 독립형 Steer-by-Wire 시스템 ECU 개발
구미희(MinHoi Koo),김도군(Dokun Kim),황준섭(Juhnsub Whang),윤석찬(Suckchan Yoon),김호식(Hosik Kim) 한국자동차공학회 2005 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2005 No.11_2
Conventional steering systems have physical mechanical connections. Unfortunately, these systems in automotive are not only inefficient systems against engine horsepower but hazard sources for driver on the front-end collision and complicate mechanical union. To resolve these problems. this paper presents LH/RH Independent Steer-by-Wire(SBW)system which is controlled by only electronic signals without mechanical connections. In this SBW system, two PMSMs as a Rack Motor and DC motor as a reaction motor are controlled by each independent ECU with information from all sensors.