Modeling and Optimal Design for a High Stability 2D Optoelectronic Angle Sensor

Area of Science:

• Optoelectronics
• Measurement Science
• Mechanical Engineering

Background:

• High-precision measurement equipment is susceptible to structural deformations from environmental changes (temperature, vibration).
• These deformations lead to drift errors, compromising sensor accuracy and stability.
• Existing designs may not adequately address these environmental impacts.

Purpose of the Study:

• To investigate the stability and optimal design of a 2D optoelectronic angle sensor.
• To develop a drift error model for angle sensors affected by structural deformations.
• To enhance the environmental stability and performance of optoelectronic angle sensors.

Main Methods:

• Error sensitivity analysis and simulation to identify critical components.
• Finite Element Analysis (FEA) of component mounts.
• Optimization of component mounts using symmetric structure principles.
• Comparative stability experiments on original and optimized sensors.

Main Results:

• A drift error model for angle sensors was established.
• Key components sensitive to thermal and vibrational effects were identified.
• Optimized sensor mounts based on symmetric structures were developed.
• Stability experiments demonstrated a >63% improvement in the optimized angle sensor's stability.

Conclusions:

• The developed modeling and optimal design method effectively enhances sensor stability.
• The optimization approach is cost-effective and applicable to various sensor types.
• This research provides a pathway to improve the reliability of precision measurement equipment.