Abstract
A new optical image stabilizing system for a small mobile device camera is presented. A gyro sensor is used to detect the amount of shaking, and a charge-coupled device (CCD) is shifted to correct the deviated optical axis using a voice coil motor (VCM). Because the VCM is nonlinear, unstable, and time-varying, a new adaptive control technique--multirate fuzzy PID control - is proposed. Our new method is capable of providing improved control with low power consumption. We show clear, stabilized results for a variety of digital photographs taken under conditions of vibration.
| Original language | English |
|---|---|
| Article number | 5174385 |
| Pages (from-to) | 303-311 |
| Number of pages | 9 |
| Journal | IEEE Transactions on Consumer Electronics |
| Volume | 55 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 1 May 2009 |
Keywords
- Optical devices
- Fuzzy control
- Fuzzy systems
- Three-term control
- Optical control
- Control systems
- Cameras
- Optical sensors
- Nonlinear optics
- Nonlinear optical devices
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