某机载光电设备减振设计与分析

Anti-vibration Design of Airborne Optoelectronic Equipment

机载环境下,振动直接影响光电设备的可靠性和稳定性。合理的减振设计可有效隔离载机传递给光电设备的振动,保证设备的稳定与跟踪精度。针对某机载光电设备设计之初暴露的减振设计失效问题,深入分析问题原因,确定是由减振系统的偏心加剧了系统的扭摆振动所致。综合考虑减振系统重心调整、减振器位置调整、减振器刚度匹配和结构优化等不同方法的可实施性及易操作性,对光电设备的减振设计进行了改进。仿真结果及试验测试表明,改进方案可有效隔离载机的振动,取得了良好的减振效果。

Vibration has direct impact on the reliability and stability of the optoelectronic equipment in the airborne environment.Reasonable anti-vibration design can effectively isolate the vibration passed from the aircraft to the optoelectronic equipment,and guarantee the stability and tracking accuracy of the equipment.We made a deep analysis to the anti-vibration failure exposed at the beginning of the design of an airborne optoelectronic equipment,and found that it was caused by the increasing of system twist vibration due to the eccentricity of the anti-vibration system.Then,improvement was made to design of the anti-vibration by synthesizing the feasibility and operability of different methods such as gravity center adjustment,damper position adjustment,damper stiffness matching and structural optimization.The results of simulation and test show that the improved scheme can effectively isolate the vibration of the aircraft,and obtain good anti-vibration effect.