| 空间相机镜筒柔性支撑结构设计与动力学分析 |
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| 引用本文： | 孙德伟,张广玉,王武义,陈志刚. 空间相机镜筒柔性支撑结构设计与动力学分析[J]. 机械设计与制造, 2010, 0(10) |
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| 作者姓名： | 孙德伟 张广玉 王武义 陈志刚 |
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| 作者单位： | 哈尔滨工业大学机电工程学院; |
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| 基金项目： | 国家建设高水平大学资助项目 |
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| 摘 要： | 为了减小卫星平台的随机振动对空间相机像质的影响,为空间相机的镜筒设计了一套柔性支撑结构,并对柔性结构的动力学特性进行了深入研究.首先,在镜筒及其支座之间放置2mm厚的橡胶环,使镜筒和支撑之间形成柔性连接.然后,应用参数识别的方法对柔性支撑的迟滞阻尼特性进行分析,得到其刚度系数和阻尼系数随频率变化的公式.最后,使用拉格朗日法建立整个系统的动力学方程,得到镜筒质心位置位移和转角随频率变化的曲线.动力学分析结果表明:当振动频率大于663Hz时,位移传递率小于0.6;当频率大于974Hz时,转角变化范围在(0.046±0.050)°之间;满足设计要求.柔性支撑结构对高频振动抑制效果显著,可以为空间相机提供一个稳定的工作环境.
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| 关 键 词： | 空间相机 柔性支撑 参数识别 动力学分析 振动抑制 |
Structural design and dynamic analysis of the flexible support of body tube in space camera |
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| SUN De-wei,ZHANG Guang-yu,WANG Wu-yi,CHEN Zhi-gang. Structural design and dynamic analysis of the flexible support of body tube in space camera[J]. Machinery Design & Manufacture, 2010, 0(10) |
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| Authors: | SUN De-wei ZHANG Guang-yu WANG Wu-yi CHEN Zhi-gang |
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| Affiliation: | SUN De-wei,ZHANG Guang-yu,WANG Wu-yi,CHEN Zhi-gang (School of Mechatronics Engineering,Harbin Institute of Technology,Harbin 150001,China) |
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| Abstract: | In order to reduce random vibration impact to image quality of space camera from satellite,a flexible support structure for the body tube of space camera is designed and a kinetic analysis is conducted to study its dynamic characteristic.Firstly,The two millimeter thick rubber ring is put into the gap between the body tube and supporter,so as to form a flexible support between two objects.Then,the hysteresis damping character of the flexible support is analyzed using the method of parameter identification,a... |
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| Keywords: | Space camera Flexible support Parameter identification Dynamic analysis Vibration isolation |
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