마찰 구동형 압전 작동기를 이용한 카메라 손떨림 진동보상 기법 연구 = On the Compensation of Camera Hand Shaking Using Friction Driven Piezoelectric Actuator

다국어 초록 (Multilingual Abstract)

The focal plane image stabilization for a camera is one of the most effective method that can increases the digital camera's image quality by compensating the vibration disturbance. The optical image stabilization can be implemented by making the focal plane to trace the path of incident light. To control the position of focal plane motion compensating stage precisely, a nonlinear control algorithm has been applied by considering coulomb friction which is nonlinear behavior of the compensator system. In our study, we have analyzed the hand shaking vibration using the gyro sensor, and made a mathematical model of compensating stage containing optical sensor and piezo-actuator. Then the nonlinear control algorithm has been designed and its performance has been verified by experiment. In this study, a friction driven peizo-electric actuator with $1{\mu}m$ resolution and 10mm/s speed has been used for stage movement.

참고문헌 (Reference)

1 곽동기, "초점면부 영상안정화를 위한 압전형 마찰구동기의 동특성 연구" 한국항공우주학회 37 (37): 399-405, 2009

2 황재혁, "소형 위성 영상안정화를 위한 능동형 광학 보정장치 설계" 한국항공우주학회 43 (43): 472-478, 2015

3 "www.piezo-tech.co.kr"

4 J. Huang, "The sampling theorem with constant amplitude variable width pulses" 58 : 1178-1190, 2011

5 K. Janschek, "Performance analysis of opto-mechatronic image stabilization for a compact space camera" 15 : 333-347, 2007

6 Meckl, P. H., "Feedforward Control Techniques Achieve Fast Settling Time in Robots" 1913-1918, 1986

7 D.F. Elliott, "Fast transforms: Algorithms, analysis, applications" Academic Press 1982

8 Daniel Inman, "Engineering Vibrations" Pearson Education 2014

9 D. G. Kwag, "Dynamic Characteristic of Vibration Compensation using Piezoelectric Driven Stick-Slip Actuators" 376-377, 2008

10 John G, "Digital Signal Processing: Principles, Algorithms, and Application" Macmillian Publishing Co. 2006

11 J. Scott Armstrong, "Causal Forces : Structuring Knowledge for Time Series Extrapolation" 12 : 103-115, 1993

12 Hyun-Phill Ko, "A novel tiny ultrasonic linear motor using the radial mode of a bimorph" 125 : 477-481, 2006