http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
GER 유체를 이용한 ER Brake System의 설계 및 속도 제어
육지용(Yook, J.Y.),최승복(Choi, S.B.),육운수(Yook, W.S.) 한국소음진동공학회 2012 한국소음진동공학회 논문집 Vol.22 No.4
This paper presents robust control performance of a direct current(DC) motor with brake system adopting a giant electrorheological(GER) fluid, whose distinguished feature is an extremely high value of yield stress. As a first step, Bingham characteristics of the GER fluid is experimentally investigated using the Couette type electroviscometer. A cylindrical type of ER brake is then devised based on the Bingham model, and its braking torque is evaluated. Structural analysis of ER break is performed using ANSYS. After formulating the governing equation of motion for the DC motor with ER brake system, a sliding mode control algorithm, which is very robust to external disturbances and parameter uncertainties, is synthesized and experimentally realized in order to achieve desired rotational speed trajectories. The tracking responses of the control system are then evaluated and verified by presenting speed control performance.
육지용(Yook, J.Y.),양현섭(Yang, H.S.),이창하(Lee, C.H.),조경석(Cho, K.S.),김광일(Kim, K.I.),권혁률(Kwon, H.R.),박용선(Park, Y.S.) 한국소음진동공학회 2011 한국소음진동공학회 논문집 Vol.21 No.7
This paper presents dynamic analysis of FCEV(fuel cell electric vehicle) turbo blower. To analyze the dynamic characteristics of turbo blower, FEA(finite element analysis) and experimental test are performed. Evaluations of stress safety for rotor sleeve and impeller due to rotational force and shrink fit are performed. Rotor dynamic analysis is conducted by Campbell diagram and structure vibration analyses are performed using FEA and experimental test. Through these results, noise sources of turbo blower are verified.
육지용(Yook, Ji-Yong),차용길(Cha, Yong-Kil),임정수(Lim, Jung-Su),김광일(Kim, Kwang-Il),강성호(Kang, Sung-Ho) 한국소음진동공학회 2009 한국소음진동공학회 논문집 Vol.19 No.1
This paper presents dynamic analysis of HVAC(heating ventilation & air conditioning) heater case which consists of heater and evaporator unit for passenger car. To analyze the dynamic characteristics of HVAC heater case, finite element model which consists of shell elements is constructed for modal analysis and experimental modal analysis has been conducted. Finite element analysis results are compared with experimental results to evaluate of validity of finite element model. After identifying mode shape and natural frequency of HVAC heater case, local stiffness of HVAC case is evaluated through point mobility using finite element analysis and experiment.
고무와 압전작동기를 이용한 하이브리드 마운트의 설계 및 진동제어 응용
육지용(Yook, Ji-Yong),성금길(Sung, Kum-Gil),문석준(Moon, Seok-Jun),최승복(Choi, Seung-Bok) 한국소음진동공학회 2007 한국소음진동공학회 논문집 Vol.17 No.5
This paper presents active vibration control using a hybrid mount which consists of rubber element and the piezostack actuator. After identifying stiffness and damping properties of the rubber element and piezoelectric elements, a mechanical model of the hybrid mount is established. The mount model is then incorporated with the vibration system, and the governing equation of motion is obtained in a state space. A sliding mode controller and LQG controller are designed in order to actively attenuate the vibration of the system subjected to various frequencies and small magnitude excitations. Control responses such as acceleration and force transmission through the hybrid mount are evaluated by computer simulation.
육지용(Jiyong Yook),차용길(Yongkil Cha),양현섭(Hyunsub Yang),조경석(Kyungsuk Cho),백찬호(Chanho Beak),김광일(Kwangil Kim) 한국자동차공학회 2012 한국자동차공학회 지부 학술대회 논문집 Vol.2012 No.10
Hybrid and electric vehicles adopt electric motor driven system using rechargeable battery compared to conventional vehicles. These vehicles are eco- friendly les because of no fuel consumption. These chargeable vehicles using alternative power train driven by electric motor need high efficient thermal management system in battery system in high temperature status on going charging and discharging operation . To maintain proper temperature status in battery system, BCS(Battery Cooling System) is adopted. BCS is composed of BLDC motor, inverter, sirocco type wheel and BLWR. Unit and the operating noise of BCS located under the trunk makes NVH problem in vehicle. In this paper, FEA(Finite Element Analysis) and experiment are performed for analyzing NVH characteristics of BCS , verify the noise source of BCS and propose the noise reduced design for BCS NVH problem.
육지용(Jiyong Yook),차용길(Yongkil Cha),양현섭(Hyunsub Yang),조경석(Kyungsuk Cho),백찬호(Chanho Beak),김광일(Kwangil Kim) 한국자동차공학회 2012 한국자동차공학회 학술대회 및 전시회 Vol.2012 No.11
Hybrid and electric vehicles adopt electric motor driven system using rechargeable battery compared to conventional vehicles. These vehicles are eco- friendly les because of no fuel consumption. These chargeable vehicles using alternative power train driven by electric motor need high efficient thermal management system in battery system in high temperature status on going charging and discharging operation . To maintain proper temperature status in battery system, BCS(Battery Cooling System) is adopted. BCS is composed of BLDC motor, inverter, sirocco type wheel and BLWR. Unit and the operating noise of BCS located under the trunk makes NVH problem in vehicle. In this paper, FEA(Finite Element Analysis) and experiment are performed for analyzing NVH characteristics of BCS , verify the noise source of BCS and propose the noise reduced design for BCS NVH problem.
육지용(Yook Ji Yong),양현섭(Yang Hyun Sub),이창하(Lee Chang Ha),조경석(Jo Kyung Suk),박용선(Park Yong Sun),권혁률(Kwon Hyuk Ryul) 한국소음진동공학회 2010 한국소음진동공학회 학술대회논문집 Vol.2010 No.10
This paper presents dynamic analysis of FCEV (Fuel Cell Electric Vehicle) Turbo Blower. To analyze the dynamic characteristics of Turbo Blower, finite element model which consists of solid elements is constructed. Evaluation of stress for safety of rotor sleeve due to centrifugal force, Shrink fit analysis in maximum rotation speed is performed. Rotor dynamic analysis of Turbo blower is conducted using Campbell diagram and FEA (Finite element analysis) results are compared with experimental results to evaluate of validity of finite element model. To evaluate of Structure vibration characteristics, Modal analysis and forced vibration analysis are performed through FEA and experiment.