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本文引用格式:张明明,王帅,张猛,贾亮,侯传涛,李亚男.伺服机构冲击环境下故障失效分析[J].动力学与控制学报,2019,17(4):369~374;   Zhang Mingming,Wang Shuai,Zhang Meng,Jia Liang,Hou Chuantao,Li Yana.Failure analysis of servo mechanism under shock environment[J].Journal of Dynamics and Control,2019,17(4):369-374.
伺服机构冲击环境下故障失效分析    点此下载全文
张明明  王帅  张猛  贾亮  侯传涛  李亚男
北京环境强度研究所, 北京 100076,北京环境强度研究所, 北京 100076,北京精密机电控制设备研究所, 北京 100076,北京环境强度研究所, 北京 100076,北京环境强度研究所, 北京 100076,北京环境强度研究所, 北京 100076
基金项目:
DOI:10.6052/1672-6553-2019-034
摘要:
      建立了某型伺服机构有限元模型,依据模态试验结果,分析确定了伺服机构敏感刚度,即连接轴承刚度,并对模型进行了修正.在此基础上,采用模态叠加法,分析了该型伺服机构在冲击环境下的动响应,通过计算结果与冲击试验测量结果的对比分析,验证了模型准确有效性.最后,基于修正后模型对伺服机构故障—丝杠断裂失效进行分析.本文对伺服机构轴承刚度识别及有效模拟提出了一种有效的方法,对此类伺服机构在冲击环境下的动响应分析,具有一定的工程指导意义.
关键词:伺服机构,冲击环境,模态叠加法,轴承刚度,故障失效
Failure analysis of servo mechanism under shock environment    Download Fulltext
Zhang Mingming  Wang Shuai  Zhang Meng  Jia Liang  Hou Chuantao  Li Yana
Fund Project:
Abstract:
      A certain type of servo mechanism′s finite element model was built, then through the analysis of modal experiment, it was found that the servo mechanism′s stiffness was sensitive to the link bearing′s stiffness, meanwhile, the finite element model of the servo mechanism was modified based on the modal experiment′s results. After that, by using modal superposition method, the dynamics response of the servo mechanism under shock environment was analyzed, then by comparing shock experiment, it was verified that the servo mechanism′s finite element model was accurate and effective, finally, by using the modified model, the failure of the servo mechanism′s lead screws was investigated. The proposed method was effective for confirming and simulating the stiffness of the servo mechanism′s link bearing, and had certain instructive significance to analyze dynamics response of this type of servo mechanism under shock environment.
Keywords:servo mechanism,shock environment,modal superposition method,bearing′s stiffness,failure
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