新型光电吊舱无角位移减振器设计

摘要

According to the existing multi-frame optoelectronic pod vibration isolation system,a new type of inner and outer shock absorber which could limit angular displacement in different side of the pod was designed.Through the rational combination of the inner and outer shock absorbers which was put in or out of the pot,the angular constraints and rotational degrees of freedom and classified attenuation of the pod could be achieved,and the range of stiffness and damping of the shock absorbers were calculated.The three-dimensional model of the shock absorbers and the simplified pod were built by Solidworks then the vibration reduction performance of the system was simulated by Adams/Vibration.The results show that the proposed new type of inner and outer shock absorbers can meet the requirement of non-angular displacement vibration suppression when they were put in the right position.%根据现有两轴四框架机载光电吊舱减振结构,设计了新型的可限制角位移的内外框架减振器,通过内外框架减振器的合理组合,实现了三向转动自由度的限制与吊舱振动的分级衰减。并根据振动理论计算了内外框架减振器的刚度系数与阻尼系数的范围,用SolidWorks软件建立了内外框架减振器及简化吊舱的三维模型,结合Adams/Vibration仿真分析了减振器安装于系统后的减振性能。结果表明：该内外框架减振器组合后能够满足无角位移减振的要求。