The paper analyzes the damages ot shock and vibration to precise mobile vehicle-mounted optical systems during transportation process and working condition, points out that structural deformation and vibration are the main factors influencing optical system stability and vehicle installation implementation, and notes that it is the key technique to achieve the optical system stability by improving the overall vehicle stiffness, stability and vibration isolation performance of the mobile vehicle-mounted optical platform.The structure and composition of the vehicle-mounted optical platform as well as high stiffness and double-layer isolation design solutions are discussed.The modal analysis of the designed double-layer optical platform isolation system is carried out with ANSYS finite element method.Force modal testing is also conducted on this optical platform isolation system for verification.The results show that the double-layer vehicle-mounted vibration isolation system for optical platform has good structure stability; it has good attenuation effect on strong vibration caused by gas drainage.The experiment results and the simulation model have good consistency.%分析了冲击、振动对车载精密光学系统的影响,指出了光学平台的变形和振动是影响车载精密光学系统精度和稳定性的主要因素,提出了车载光学平台双层隔振系统的设计方案.采用ANSYS有限元方法分析了光学平台隔振系统的振动模态和减振比,完成了车载状况下的光学平台振动测试.分析与测试结果表明,车载光学平台的双层隔振结构具有良好的稳定性,且对环境强振动有很好的衰减作用.该双层隔振技术方案及其分析测试方法,对于各种车载精密光学系统和设备具有重要的工程应用价值.
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