This paper proposes a practical methodology for designing an optical image stabilization system controller that consists of a gyro signal filter and feedback controller for a smart phone camera module called miniature camera module. Since the advent of smartphone, miniature camera modules have become much more compact and sophisticated than the modules in the digital single-lens reflex camera. Therefore, a greater consideration on designing controller for the miniature camera module is necessary to obtain higher performance. This paper proposes 1) the OIS system’s block diagram connecting the physical part and the controller part and 2) the methodology for designing feedback controller according to the performance index from the block diagram. A linear feedback controller and gyro signal filter are designed using the proposed methodology and its performance is verified via experimentation.
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Recommended by Editor Doo Yong Lee. This research was funded by DONGWOON Anatech (https://www.dwanatech.com).
Woo-Yong Kim received his B.S. degree from the Department of Mechanical System and Design Engineering, Seoul National University of Science and Technology in 2014, and his M.S. degree in Robotics program from KAIST in 2016. His research interests include linear control, state observer, and parameter estimation of battery management system.
Hyung-Tae Seo received his B.S. degree in Mechanical Engineering from KAIST in 2011, his M.S. degree in Mechanical Engineering from KAIST in 2013. His research interests include robust control theory, and hydraulic control system.
Soohyun Kim received his B.S. degree in Mechanical Engineering from Seoul National University in 1978, an M.S. degree in Mechanical Engineering from KAIST in 1980, and a Ph D. degree in Mechanical Engineering from Imperial College, Univ. of London in 1991. His research interests include Bio-mimetic robot system & autonomous path planning, and spectroscopy and optics-based sensors (development of minimized femtosecond fiber laser and optical system for detecting of hazard agents).
Kyung-Soo Kim received his B.S. degree in Mechanical Engineering from KAIST in 1993, an M.S. degree in Mechanical Engineering from KAIST in 1995, and a Ph.D degree in Mechanical Engineering from KAIST in 1999. His research interests include control theories & applications (robust control theories, disturbance estimation/compensation, and motor control), sensors and actuators (pneumatic/hydraulic actuation, and new actuation mechanism & control), robotics (robot hands, walking robots, and robot manipulators), and automotive technologies (electrical power steering, new hybrid powertrain design & control, and electric vehicles).
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Kim, WY., Seo, HT., Kim, S. et al. Practical Approach for Controlling Optical Image Stabilization System. Int. J. Control Autom. Syst. 18, 824–833 (2020). https://doi.org/10.1007/s12555-018-0913-0