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机载光电平台的稳定性和跟踪精度受振动扰动的影响十分敏感,为了提高平台任务载荷的成像品质,需要通过合理的隔振设计对光电平台的振动环境加以改善。文章以某无人机吊舱平台为背景,结合被动隔振理论及被动隔振系统的动力学模型,给出光电平台隔振设计的技术思想及具体的隔振方案,并通过振动试验对隔振设计的效果进行了检验。试验结果表明,隔振系统内部测点的加速度均方根与外部测点的相比减小了60%,说明了隔振设计的减振效力,进而验证了隔振方案的合理性,为更深入的机载隔振系统设计提供了参考依据。
The stability and tracking accuracy of the airborne photoelectric platform are very sensitive to the vibration disturbance. In order to improve the imaging quality of the platform task load, the vibration environment of the photovoltaic platform needs to be improved through reasonable vibration isolation design. Based on a UAV nacelle platform, combining with the theory of passive vibration isolation and the dynamic model of passive vibration isolation system, the article gives the technical idea and the specific vibration isolation scheme of vibration isolation for photovoltaic platform, The effect of vibration design was tested. The experimental results show that the root mean square of acceleration at the measuring points inside the vibration isolation system is reduced by 60% compared with the external measuring points, which shows the damping effect of the vibration isolation design and further verifies the rationality of the vibration isolation scheme. In-depth on-board vibration isolation system design provides a reference.