为减小载机角振动对光电吊舱成像质量的影响，应用金属橡胶作为隔振元件研制出两种能限制一定自由度的小型金属橡胶减振器，分别嵌入光电吊舱内、外框架减振系统中设计了两级减振系统，从原理上实现了3个方向无角位移隔振。依据振动理论获取了两种减振器轴向、径向刚度和阻尼比等参数并采取特殊工艺制备了金属橡胶减振器。应用ADAMS/Vibration模块对光电吊舱减振系统进行了仿真分析，分析结果显示光电吊舱减振系统固有频率为17Hz左右，角振动幅值最大值为0．0011，并且当频率大于25Hz时，角振动幅值趋近于零，分析结果表明该减振系统对25Hz以上的角振动可以起到很好的抑制作用。最后通过振动试验验证了仿真结果的正确性，与实际测量结果相比，仿真计算结果误差不超过10％，说明光电吊舱减振设计是成功的。金属橡胶减振器在光电吊舱上的成功应用对于光电吊舱振动隔离技术有着重要的意义。%In order to reduce the effect of airborne anglular vibration on imaging quality of an electro-optical pod, two types of small metal-rubber damper restricting the motion in directions of certain DOFs were developed using metal-rubber as a vibration isolator.Two metal-rubber dampers were individually embedded in the inner and outer frames of the vibration reduction system of the electro-optical pod to form a two-grade anti-vibration system realizing three directions of angular vibration isolation in principle.The axial and radial stiffnesses,damping ratio and other parameters of the two dampers were acquired with the vibration theory and a special cessing technique for the preparation of metal-rubber dampers was adopted.The simulation analysis of the electro-optical pod anti-vibration system was conducted by using ADAMS/Vibration code module.The analysis results showed that the natural vibration frequency of the electro-optical pod is about 17Hz,the maximum amplitude of angular vibration is 0.0011,and when the frequency is more than 25Hz,the angular vibration approaches to zero;the vibration reduction system of the electro-optical pod has a very good inhibitory effect on angular vibration with more than 25 Hz.The correctness of the simulation results was verified with vibration tests. Compared with the actual measurement results,the simulation result error was less than 10%.It was shown that the electro-optical pod damper design is successful.
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