What question did this study set out to answer?

The aim is to update the finite element model for a two-axis gimbal system using response surface methodology based on vibration data.

Updating Finite Element Model of a Two-Axis Gimbal System Using Response Surface Methodology based on Vibration Data

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Randomized trial updates finite element model of a gimbal system, suggesting improved accuracy in design parameters.

The aim is to update the finite element model for a two-axis gimbal system using response surface methodology based on vibration data.
Used response surface methodology to select bearing stiffness as a design factor.
Conducted random vibration analysis comparing experimental results with finite element model outcomes.
Achieved similarity in modal direction and within 3% error in modal frequency.
The updated model had a relative error in Y-axis and Z-axis PSD responses ranging from 0.5% to 61.7%.
Selected bearing stiffness led to modal directions consistent with real gimbal systems.
The main modal frequency showed an approximately 3% error compared to test results.

Cho et al. (2026) studied this question.

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