Prediction Technique and Measuring Device for Coupled Disturbance Forces from Large Equipment in the Spacecraft

Area of Science:

• Aerospace Engineering
• Mechanical Engineering
• Vibration Analysis

Background:

• Accurate measurement of dynamic forces from vibration sources is critical for spacecraft equipment.
• Conventional rigid-based measurement methods have limitations in assessing complex dynamic interactions.

Purpose of the Study:

• To propose a novel method for predicting dynamic force interference from large vibration sources on spacecraft, incorporating vibration coupling.
• To design and validate a flexible-based dynamic force measuring platform suitable for large masses and vibration sources.

Main Methods:

• Development of a flexible-based dynamic force measuring platform.
• Derivation of theoretical models accounting for vibration coupling.
• Experimental calibration of the platform and acquisition of model parameters.
• Feasibility verification using a principle prototype.

Main Results:

• The flexible measuring platform achieved a measurement error of less than 8% when vibration coupling was considered.
• This represents a 29% reduction in error compared to measurements without coupling.
• The prediction error for disturbance forces was within 17%.

Conclusions:

• The proposed method and flexible platform significantly improve the accuracy of dynamic force measurement and prediction for large vibration sources in spacecraft.
• Accounting for vibration coupling is essential for enhancing measurement precision.
• The findings provide a valuable reference for aerospace applications requiring precise vibration analysis.