一种从受迫振动响应提取动力学参数方法的仿真分析

doi:10.16182/j.issn1004731x.joss.19-0093

系统仿真学报 ›› 2019, Vol. 31 ›› Issue (4): 618-623.doi: 10.16182/j.issn1004731x.joss.19-0093

• 专栏：控制、决策与仿真 • 上一篇下一篇

一种从受迫振动响应提取动力学参数方法的仿真分析

魏玉淼, 张志利^*, 常振军, 赵军阳, 李向阳

火箭军工程大学,陕西西安 710025

收稿日期:2019-03-07 修回日期:2019-03-20 出版日期:2019-04-08 发布日期:2019-11-20
作者简介:魏玉淼(1988-),男,四川剑阁,博士,讲师,研究方向为MEMS系统测试与仿真; 张志利(1966-),男,河南濮阳,博士,教授,博导,研究方向为兵器发射系统仿真与自动检测;常振军(1984-),男,吉林磐石,博士,讲师,研究方向为车载定位定向与惯导测试。

Simulation Analyses of a Method for Extracting Dynamic Parameters from Forced Vibration Responses

Wei Yumiao, Zhang Zhili^*, Chang Zhengjun, Zhao Junyang, Li Xiangyang

Rocket Force University of Engineering, Xi’an 710025, China

Received:2019-03-07 Revised:2019-03-20 Online:2019-04-08 Published:2019-11-20

摘要/Abstract

摘要： 为测试机电系统的动力学特性,研究了一种从受迫振动响应信号中提取系统动力学参数的方法。采用希尔伯特振动分解方法从受迫振动响应信号中提取出自由衰减振荡分量。使用SSA-FREEVIB方法对其进行分析处理,并对骨架曲线和阻尼曲线数据进行均值化处理,进一步抑制噪声的影响,估算出系统的谐振频率、Q值等动力学参数。数值仿真结果表明,该方法的计算结果与理论值一致性好,且具有较为良好的抗噪性能,证明了其有效性。

关键词: 受迫振动响应, SSA-FREEVIB, 希尔伯特振动分解, 骨架曲线, 阻尼曲线

Abstract: To characterize the dynamic features of electromechanical system, a method is researched for dynamic parameters extraction from the forced vibration responses. The forced vibration response signals are processed by HVD method, and the free damped oscillation components are acquired. The SSA-FREEVIB analysis is conducted for the obtained components to measure the dynamic characteristics. The equalization procedures are implemented for the backbones and damping data, the resonance frequency and Q value are therefore accurately estimated. Simulation results show that the calculated resonance frequency and Q value coincide well with the theoretical values. A good anti-noise performance of the proposed method is validated.

Key words: forced vibration responses, SSA-FREEVIB, Hilbert vibration decomposition, backbone curve, damping curves

中图分类号:

TM743 TP271+.4

魏玉淼, 张志利, 常振军, 赵军阳, 李向阳. 一种从受迫振动响应提取动力学参数方法的仿真分析[J]. 系统仿真学报, 2019, 31(4): 618-623.

Wei Yumiao, Zhang Zhili, Chang Zhengjun, Zhao Junyang, Li Xiangyang. Simulation Analyses of a Method for Extracting Dynamic Parameters from Forced Vibration Responses[J]. Journal of System Simulation, 2019, 31(4): 618-623.

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一种从受迫振动响应提取动力学参数方法的仿真分析

Simulation Analyses of a Method for Extracting Dynamic Parameters from Forced Vibration Responses

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