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pro vyhledávání: '"Joonhyuk Park"'
Autor:
Joonhyuk Park
Publikováno v:
Advances in Mechanical Engineering, Vol 16 (2024)
A design method for suspension parameters is proposed to ensure the desired performance of a railway vehicle despite uncertainties. The method used in this study consists of two loops: a sub-loop, which uses parameter uncertainties to determine the m
Externí odkaz:
https://doaj.org/article/979aef1422464f2c99c083929af79a20
Autor:
Joonhyuk Park
Publikováno v:
Advances in Mechanical Engineering, Vol 15 (2023)
This study presents an optimization method to design the suspension properties associated with low-damped carbody oscillations for high-speed railway vehicles. In this method, the least damping ratio for the low-frequency modes in the entire service
Externí odkaz:
https://doaj.org/article/d5eb6eb4526347ffbc2f44d3954fef16
Publikováno v:
Measurement + Control, Vol 52 (2019)
Background: Active lateral suspension (ALS) technologies have been well developed for several decades, but they have not been widely used in service operation due to relatively high costs for implementation and maintenance and concerns about fail-saf
Externí odkaz:
https://doaj.org/article/8daf4d867f834adf845633993bc754bd
Autor:
Joonhyuk Park
Publikováno v:
Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit. 236:109-121
This study describes the low damped carbody oscillations of the HEMU-430X, a high-speed electric-multiple-unit experimental train of Korea. The HEMU-430X had already undergone a kind of hunting problem in the test period, but it was effectively suppr
Autor:
Joshua J. Nam, Ho-Joon Kim, Hee Sin Lee, Joong-Eun Jung, Kyong-Woo Kim, Dong-Hyun Kim, Joonhyuk Park, Hyung-Kyu Kim, Hyewon Kim
Publikováno v:
Medical Imaging: Image Processing
Anti-scatter grids are routinely used to prevent degradation of image quality caused by scattered X-ray beams. However, these grids might cause linear artifacts that represent the shadows of the radiopaque septa. In this paper, we propose a machine l