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7 results on '"Byungsu Park"'

1. A Study on the Design of Isolator and the Mounting Method for Reducing the Pyro-Shock of a MEMS IMU

Author

Kyungdon Ryu, ByungSu Park, Hyungsub Lee, Kyungjun Han, and Sangwoo Lee

Subjects
inertial measurement unit, pyro-shock, micro electro-mechanical system, Chemical technology, TP1-1185
Abstract

In this paper, we proposed two methods for reducing the pyro-shock of the MEMS Inertial Measurement Unit (IMU). First, we designed the vibration isolator for reducing the pyro-shock inside the IMU. However, it turned out that there is a limit to reducing the pyro-shock with only the vibration isolator. Therefore, we improved the pyro-shock reduction performance by changing the method of mounting on the flight vehicle. Four mounting options were tested and one of them was adopted. The results showed the best reduction performance when we designed the vibration isolator with an aluminum integrated structure. When mounting, two methods were applied. One was to insert a bracket with a different material between the mounting surface and IMU and the other was to insert a set of three washers that was stacked in a PEEK-metal-PEEK order at each part of the screw connections.

Published
2022
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6. Virtualizing Graphics Architecture of Android Mobile Platforms in KVM/ARM Environment

Author

Byungsu Park, Sejin Park, Chanik Park, and Unsung Lee

Subjects
Computer science, business.industry, Hardware virtualization, Full virtualization, 020206 networking & telecommunications, 02 engineering and technology, Storage virtualization, computer.software_genre, Virtualization, Artificial Intelligence, Hardware and Architecture, Virtual machine, Embedded system, 0202 electrical engineering, electronic engineering, information engineering, Operating system, 020201 artificial intelligence & image processing, Computer Vision and Pattern Recognition, Electrical and Electronic Engineering, Graphics, Architecture, Android (operating system), business, computer, Software
Published
2017
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7. A Study on the G-Sensitivity Error of MEMS Vibratory Gyroscopes

Author

ByungSu Park

Subjects
Engineering, Rate integrating gyroscope, business.industry, Vibrating structure gyroscope, Gyroscope, Compensation (engineering), law.invention, Missile, Control theory, Inertial measurement unit, law, Sensitivity (control systems), Electrical and Electronic Engineering, business, Inertial navigation system
Abstract

In this paper, we describe the analysis and the compensation method of the g-sensitivity error for MEMS vibratory gyroscopes. Usually, the g-sensitivity error has been ignored in the commercial MEMS gyroscope, but it deserves our attention to apply for the missile application as a tactical grade performance. Thus, it is necessary to compensate for the g-sensitivity error to reach a tactical grade performance. Generally, the g-sensitivity error seems intuitively to be a gyroscope bias error proportional to the linear acceleration. However, we assert that the g-sensitivity error mainly causes not a bias error but a scale-factor error. And we verify that the g-sensitivity scale-factor error occurs due to the non-linearity of parallel plate electrodes. Therefore, we propose the compensation method to remove the g-sensitivity scale-factor error. The experimental result showed that a proposed compensation method improved successfully the performance of the MEMS vibratory gyroscope.

Published
2014
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