光电吊舱无角位移被动减振系统研究

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根据某型光电吊舱无角位移减振的需求，利用分级减振的设想，设计了一组内外框架减振器，计算了减振器刚度、阻尼系数范围，并对减振器进行了合理的布局，建立了减振系统的Solidworks三维模型，在ADAMS中进行了振动仿真分析，得出单方向输入时系统的幅频响应曲线，并对系统参数进行了优化，确定了减振器的刚度、阻尼系数的最优值，结果表明，该系统实现了三向相等刚度，解除了系统三个方向的线振动耦合，保证了荷载基准与底座基准振动状态下无相对角位移。 According to the demand of non-angular isolation for a certain optical pod, a new type of inner and outer shock absorbers which can limit the angular displacement between the base and load were designed. The stiffness and damping of the absorbers were calculated, and the vibration isolation system on which the two absorbers are reasonably placed was also designed. The three-dimensional models of the absorbers and the system were built by using the software of Solidworks, then the system was simulated by using ADAMS/vibration. The frequency response curves were obtained, and the optimal stiffness and damping were also achieved by the simulation optimization, The results show that the new system has all the same stiffness in three directions, and can remove the linear vibration coupling and the relative angular displacement between the load and base.