摘要
某型号卫星微振动对成像质量影响仿真分析结果表明,微振动对成像质量的影响不可忽略,因此针对影响最大的微振动源进行隔振。根据隔振的基本原理,通过结构设计令隔振器刚度满足要求。针对隔振器自身固有频率处响应放大的问题,通过选择合适的阻尼材料实现合理的放大因子。通过地面试验验证了隔振器对微振动的隔振效果。随后针对发射段力学环境进行了强化设计,通过选择适用的阻尼材料实现隔振器抗发射段力学环境的能力。最后通过在轨测试,利用图像分析验证了隔振器的隔振效果。
It is showed that the image quality of a satellite will be influenced by the micro-vibration according to the simulation results. So the isolator should be designed to isolate the vibration from the micro-vibration source which is dominative in all sources. According to the basic principle of isolation, the structure is designed to meet the requirement of stiffness. To reduce the resonance peak in the natural frequency of isolator, the proper damping material is selected, and the amplification factor is controlled in an acceptable range. Then the isolation ability is tested on ground. The structure is strengthened in order to withstand the rigor environment during launch, and a new damping material is used to provide adequate energy dissipation. At last the isolation ability is verified through the image analysis on orbit.
出处
《强度与环境》
2016年第5期17-23,共7页
Structure & Environment Engineering
关键词
微振动
隔振
试验验证
在轨测试
micro-vibration
isolation
test verification
on-orbit test
