User profiles for Chang-Wan Ha
 | Chang-Wan HaDept. of AI Machinery, KIMM Verified email at kimm.re.kr Cited by 609 |
[HTML][HTML] Texture development and dislocation activities in Mg-Nd and Mg-Ca alloy sheets
Texture modification during sheet rolling appears differently in binary Mg-RE (rare-earth) or
Mg-Ca alloy, compared to their ternary counterparts containing Zn. The differences in texture …
Mg-Ca alloy, compared to their ternary counterparts containing Zn. The differences in texture …
Optimal placement of inherent zeros in polynomial-based motion profiles for minimizing residual vibration and travel time under system uncertainties
Various industrial processes require motion profiles that determine machine movement over
time for workpiece transfer, with the goal of minimizing transfer time to enhance productivity. …
time for workpiece transfer, with the goal of minimizing transfer time to enhance productivity. …
Analysis of embedded prefilters in motion profiles
In this study, representative motion profiles are analyzed to explain why smoother movement
can enable a system to be silent, accurate, and reliable. Previous studies have indicated …
can enable a system to be silent, accurate, and reliable. Previous studies have indicated …
Robust zero placement for motion control of lightly damped systems
A unified tuning rule for the motion profiles is newly proposed to reduce the residual vibration.
For several motion profiles, including trapezoidal velocity profile, S-curve, and asymmetric …
For several motion profiles, including trapezoidal velocity profile, S-curve, and asymmetric …
Optimization process for polynomial motion profiles to achieve fast movement with low vibration
… Chang-Wan Ha received the BS degree in mechanical engineering from Handong Global
University, Pohang, South Korea, in 2008, and the MS and Ph.D. degrees in mechanical …
University, Pohang, South Korea, in 2008, and the MS and Ph.D. degrees in mechanical …
30.2 A 1Tb 4b/Cell 144-Tier Floating-Gate 3D-NAND Flash Memory with 40MB/s Program Throughput and 13.8Gb/mm2 Bit Density
…, R Fastow, KH Gaewsky, CW Ha… - … Solid-State Circuits …, 2021 - ieeexplore.ieee.org
Continued improvement in the 3D NAND bit density is essential to satisfy the exponentially
growing demand for data storage. The transition from 3b/cell (TLC) to 4b/cell (QLC) is a …
growing demand for data storage. The transition from 3b/cell (TLC) to 4b/cell (QLC) is a …
Analysis and control of electromagnetic coupling effect of levitation and guidance systems for semi-high-speed maglev train considering current direction
A semi-high-speed magnetic levitation (maglev) train with a maximum speed of 200 km/h is
being developed in Korea. It utilizes linear induction motors for propulsion and adopts …
being developed in Korea. It utilizes linear induction motors for propulsion and adopts …
Analysis and experimental evaluation of normal force of linear induction motor for maglev vehicle
This paper presents the analysis and experimental of the effective normal force and power
consumption in a maglev vehicle. A maglev vehicle employs the electromagnets as …
consumption in a maglev vehicle. A maglev vehicle employs the electromagnets as …
19.1 A 128Gb MLC NAND-Flash device using 16nm planar cell
…, JK Park, A Ghalam, J Guo, C wan Ha… - … Solid-State Circuits …, 2014 - ieeexplore.ieee.org
The aggressive scaling of NAND Flash memory technology — one that is even outpacing
Moore's Law — has enabled very rapid cost-per-bit reduction, resulting in an explosion of …
Moore's Law — has enabled very rapid cost-per-bit reduction, resulting in an explosion of …
Development of a Magnetic Levitation Wafer Handling Robot Transfer System with High-Accuracy and High-Cleanliness: Experimental Evaluation
Magnetic levitation can reduce particulate contamination that occurs during wafer transportation
in the semiconductor manufacturing process. This technology radically eliminates …
in the semiconductor manufacturing process. This technology radically eliminates …