Rigid body inertia parameter identification method and experiment for complex structures

doi:10.11835/j.issn.1000-582X.2018.10.002

Home > Archive>Volume 41, Issue 10, 2018 >9-18. DOI:10.11835/j.issn.1000-582X.2018.10.002

Rigid body inertia parameter identification method and experiment for complex structures
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                        10.11835/j.issn.1000-582X.2018.10.002
                    
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                        LUO YuanLUO Yuan
State Key Laboratory of Vehicle NVH and Safety Technology, Chongqing, 401122, P. R. China;School of Automotive Engineering, Chongqing University, Chongqing, 400044, P. R. China
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WANG PanWANG Pan
State Key Laboratory of Vehicle NVH and Safety Technology, Chongqing, 401122, P. R. China;School of Automotive Engineering, Chongqing University, Chongqing, 400044, P. R. China
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DENG ZhaoxiangDENG Zhaoxiang
State Key Laboratory of Vehicle NVH and Safety Technology, Chongqing, 401122, P. R. China;School of Automotive Engineering, Chongqing University, Chongqing, 400044, P. R. China
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YU FengYU Feng
School of Automotive Engineering, Chongqing University, Chongqing, 400044, P. R. China
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LIANG ZhuLIANG Zhu
School of Automotive Engineering, Chongqing University, Chongqing, 400044, P. R. China
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Clc Number:TH113.1
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Abstract:

In order to identify the inertia parameters of complex structure rigid body with high efficiency and accuracy, an identification test device was built based on the FRF mass line method. The influence of system stiffness and damping, noise, coordinate error of excitation point and response point, angle error of hammer excitation and sensor installation on the identification accuracy were obtained by multibody dynamics simulation. A rigid body with known inertia parameters was identified by the proposed device and the error was within 5%. It shows that the test device based on the FRF mass line method can identify inertial parameters of complex structure rigid body efficiently and accurately.

Key words:parameter identification;rigid body;inertial parameters;frequency response;mass line

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罗渊,王攀,邓兆祥,于锋,梁柱.复杂结构刚体惯性参数识别方法与试验[J].重庆大学学报,2018,41(10):9~18

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Received:May 08,2018
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Online: October 22,2018
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