An Active Vibration Isolation and Compensation System for Improving Optical Image Quality: Modeling and Experiment

Area of Science:

• Optical Engineering
• Control Systems Engineering

Background:

• Vibrations in optical detection equipment (ODE) degrade imaging quality.
• Effective vibration isolation is crucial for high-fidelity optical measurements.

Purpose of the Study:

• To develop and evaluate an active vibration isolation and compensation system (VICS) for ODE.
• To improve optical imaging quality by mitigating vibration effects.

Main Methods:

• Designed an active vibration isolator for cameras.
• Employed a dual-loop control strategy with position compensation and integral force feedback (IFF).
• Established a mapping between vibration and image quality; proposed a performance metric.

Main Results:

• Achieved a 13.95 dB reduction in peak vibration at the natural frequency.
• Widened the isolation bandwidth by 11.76 Hz compared to systems without VICS.
• Demonstrated a 46.03% increase in image performance metric value near the natural frequency.

Conclusions:

• The developed VICS effectively isolates vibrations, significantly enhancing optical imaging quality.
• The proposed system offers a practical solution for improving the performance of optical detection equipment in vibratory environments.