振动环境下电动调整平台稳定性研究OA

To address the issues of optical axis deviation and optical path misalignment in precision optical systems induced by a vibration environment,a highly stable electric adjustment platform was designed,and a finite element analysis model based on elastomer dynamics was established to assess its dynamic characteristics.The model treats key load-bearing components as elastic bodies and incorporates a nonlinear mechanical model based on Hertz contact theory to characterize the complex contact characteristics between the pushrod and the tungsten steel ball,achieving an accurate description of the rigid-flexible coupling dynamic behavior of the entire system.Random vibration simulation analysis reveals that transverse vibration has the most significant impact on the platform′s pointing stability.Experimental results from random vibration tests show a maximum relative error of 7.19%between the experimental and simulated values,validating the effectiveness of the dynamic model.Under a transverse vibration condition with a root mean square(RMS)acceleration of 0.5g,the platform exhibits a maximum angular displacement deviation of 19.83 μrad,demonstrating excellent pointing stability.This research not only provides a quantitative basis for the anti-vibration design of high-precision electric adjustment platforms but also offers an effective engineering analysis method for improving the pointing accuracy and reliability of optical systems in complex dynamic environments.