Design, Simulation and High Precision Tracking Control of a Piezoelectric Optical Stabilization Platform

Area of Science:

• Opto-electronic imaging
• Mechanical engineering
• Control systems

Background:

• Optical image stabilization (OIS) is essential for high-performance airborne imaging systems operating in dynamic environments.
• Linear image shifts degrade image quality and require precise compensation mechanisms.

Purpose of the Study:

• To design and validate a two-dimensional piezoelectric-driven OIS platform for compensating linear image shifts.
• To enhance the repeatability and accuracy of the OIS platform through advanced modeling and optimization techniques.

Main Methods:

• Development of a motion platform with a bridge amplification mechanism and right-angle guiding beams.
• Theoretical modeling and finite element analysis (FEA) for validation.
• Modeling piezoelectric actuator hysteresis using the Bouc-Wen model and optimizing with Hybrid Genetic Algorithm and Particle Swarm Optimization (HGAPSO).
• Implementation of a composite controller integrating HGAPSO.

Main Results:

• The OIS platform achieved a workspace of 53.92 μm × 53.76 μm and a motion resolution of 30 nm.
• A maximum coupling error of 2.28% and a first-order resonant frequency of 356.69 Hz were recorded.
• Submicron tracking accuracy was attained, with errors of 0.43 μm (X-axis) and 0.47 μm (Y-axis) using the HGAPSO composite controller.

Conclusions:

• The developed piezoelectric-driven OIS platform demonstrates high precision and effectiveness for airborne imaging.
• The integrated HGAPSO optimization and composite controller significantly improve tracking accuracy and repeatability.
• This research offers valuable insights for developing advanced OIS systems for highly dynamic operational environments.