http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
부상특성 향상을 위한 극소 공기윤활막을 지닌 헤드 슬라이더의 형상 최적 설계
강태식,최동훈,정태건,박노열,이성창,Gang, Tae-Sik,Choe, Dong-Hun,Jeong, Tae-Geon,Park, No-Yeol,Lee, Seong-Chang 대한기계학회 2001 大韓機械學會論文集A Vol.25 No.4
Flying attitudes of the slider, which are flying height, pitch and roll, are affected by the air flow velocity, the skew angle, and the manufacturing tolerances. Traditional designs of the air bearing surface have considered only the flying performances for the variations in the air flow velocity and the skew angle, which are determined by the radial position. In this study, we present the new shape design of the air bearing surface by considering the track seek performance and the air bearing stiffness as well as the traditional design requirements. The optimization technique is used to improve the dynamic characteristics and operating performance of the newly proposed air bearing surface shape design further. The optimized configuration is obtained automatically and the optimally designed sliders show the enhanced flying and dynamic characteristics.
섭동법을 이용한 공기윤활 슬라이더 베어링의 동특성 해석
강태식,최동훈,정태건,Gang, Tae-Sik,Choe, Dong-Hun,Jeong, Tae-Geon 대한기계학회 2000 大韓機械學會論文集A Vol.24 No.6
This study presents a method for determining bearing stiffness and damping coefficients of air-lubricated slider bearing, and shows influences of air-bearing surface geometry(recess depth, crown an d pivot location) on flying attitude and dynamic characteristics. To derive the dynamic lubrication equation, the perturbation method is applied to the generalized lubrication equation which based on linearized Boltzmann equation. The generalized lubrication equation and the dynamic lubrication equation are converted to a control volume formulation, and then, the static and dynamic pressure distributions are calculated by finite difference method. The recess depth and crown of the slider show significantly influence on flying attitude and dynamic characteristics comparing with those of pivot location.
공기 베어링 효과를 고려한 HDD 서스펜션 시스템의 트랙탐색 동특성
김정주,박노열,강태식,정태건,Kim, Jeong-Ju,Park, No-Yeol,Gang, Tae-Sik,Jeong, Tae-Geon 대한기계학회 2001 大韓機械學會論文集A Vol.25 No.2
Recently, almost all hard disk drives employ the rotary actuator system. The performance of an HDD depends on the accuracy and speed of tracking motion. We study the dynamics of head-suspension assembly during track seek. We develop the numerical analysis program to study the dynamic characteristics of HDD suspension system considering the air bearing effects. The track seek simulation by using the developed program helps to estimate the effect of the suspension vibration on the air bearing dynamics. We calculate the behaviour of the air bearing for the given track seek profile and calculate the positioning error during track seek process due to the lateral deflection of the suspension.