An implementation of closed-loop optical image stabilization system for mobile camera
Seung-Kwon Lee, Jin-Hyeung Kong · 2014
In this study, a new Closed-loop Optical Image Stabilization(OIS) system is developed for mobile camera. Gyro sensors, which are made by MEMS process, normally generate an accumulated error(drift) and escape the zero angle because of noise factor while it calculates the rotating angle. This research explores the new algorithm, utilizing DCF(Drift Compensation Filter) and BACF(Boot Angle Compensation Filter). RRF (Ringing Reduction Filter) PID controller is applied Feedforward control to reduce the actuator's vibration by disturbance. OIS Actuator control performance than previous research has improved.