Parameter Identification of Weakly Nonlinear Vibration System in Frequency Domain | Zendy

Peng Jie-hua | Zendy; Jiashi Tang | Zendy; Zili Chen | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

Parameter Identification of Weakly Nonlinear Vibration System in Frequency Domain

Author(s) -

Peng Jie-hua,

Jiashi Tang,

Zili Chen

Publication year - 2003

Publication title -

shock and vibration

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.418

H-Index - 45

eISSN - 1875-9203

pISSN - 1070-9622

DOI - 10.1155/2004/634785

Subject(s) - nonlinear system , frequency domain , frequency response , vibration , describing function , control theory (sociology) , perturbation (astronomy) , function (biology) , transformation (genetics) , system identification , mathematics , nonlinear system identification , identification (biology) , restoring force , mathematical analysis , engineering , physics , computer science , acoustics , structural engineering , software engineering , artificial intelligence , chemistry , data modeling , biology , biochemistry , control (management) , quantum mechanics , evolutionary biology , botany , electrical engineering , gene

A new method of identifying parameters of nonlinearly vibrating system in frequency domain is presented in this paper. The problems of parameter identification of the nonlinear dynamic system with nonlinear elastic force or nonlinear damping force are discussed. In the method, the mathematic model of parameter identification is frequency response function. Firstly, by means of perturbation method the frequency response function of weakly nonlinear vibration system is derived. Next, a parameter transformation is made and the frequency response function becomes a linear function of the new parameters. Then, based on this function and with the least square method, physical parameters of the system are identified. Finally, the applicability of the proposed technique is confirmed by numerical simulation

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research