| 双状态非线性隔振器参数设计与试验研究 |
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| 引用本文： | 王光远,关新,陈祥,唐绍凡,梁鲁,郑钢铁.双状态非线性隔振器参数设计与试验研究[J].宇航学报,2011,32(1). |
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| 作者姓名： | 王光远 关新 陈祥 唐绍凡 梁鲁 郑钢铁 |
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| 作者单位： | 1. 清华大学航天航空学院,北京,100084
2. 北京空间机电研究所,北京,100076 |
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| 摘 要： | 为有效抑制在轨微振动对有效载荷指向精度的影响,并改善其发射段动力学环境,设计了一种双状态非线性隔振器,利用发射与在轨状态载荷条件的差异,使其在两个阶段有不同的隔振频率.分析了各设计参数对发射段动态响应以及在轨隔振性能的影响,提出了隔振器参数设计方法.试制了隔振器样件,进行了静力学测试,并按照发射和在轨两种状态的力学环境进行了动力学试验,测试了隔振器在两种状态下的传递率.试验结果表明,隔振器在发射段准静态载荷作用下可避免出现大变形,并显著改善星载设备的动力学环境.在轨时可有效隔离微振动,将5Hz以上频段受到的扰动幅度下降92%以上.
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| 关 键 词： | 微振动 动力学试验 非线性隔振器 传递率 骨架线 |
Parameter Design and Experimental Study of a Two State Nonlinear Isolator |
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| WANG Guang-yuan,GUAN Xin,CHEN Xiang,TANG Shao-fan,LIANG Lu,ZHENG Gang-tie.Parameter Design and Experimental Study of a Two State Nonlinear Isolator[J].Journal of Astronautics,2011,32(1). |
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| Authors: | WANG Guang-yuan GUAN Xin CHEN Xiang TANG Shao-fan LIANG Lu ZHENG Gang-tie |
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| Institution: | WANG Guang-yuan1,GUAN Xin1,CHEN Xiang2,TANG Shao-fan2,LIANG Lu1,ZHENG Gang-tie1(1.School of Aerospace,Tsinghua University,Beijing 100084,China,2.Beijing Institute of Space Mechanics & Electricity,Beijing 100076,China) |
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| Abstract: | A two state isolator has been developed to protect the optical payloads during launch and to block the transmission of disturbances on orbit.The isolator has good performance both during launch and on orbit because of its specially designed nonlinear stiffness and damping.The isolator works in a linear part with low stiffness and small damping ratio under micro-vibration and microgravity on orbit.Nonlinear stiffness and damping parameters are tuned to restrict the displacement of the payload and to meet the... |
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| Keywords: | Micro-vibration Dynamics test Nonlinear isolator Transmissibility Backbone |
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