Identification of the Asymmetric Transmission Error and Gear Mesh Dynamic Parameters using Full-Spectrum Responses in a Geared-Rotor System  

作　　者：Bhyri Rajeswara Rao Rajiv Tiwari 

机构地区：[1]Indian Institute of Technology Guwahati,Guwahati,Assam,India

出　　处：《Journal of Dynamics, Monitoring and Diagnostics》2024年第2期112-142,共31页动力学、监测与诊断学报（英文）

摘　　要：A dominant source of vibration in geared-rotor systems is the gear mesh fault parameters.They include the asymmetric transmission error(TE),phases of TE,the gear mesh stiffness,the gear mesh damping,and the gear runouts.The present work deals with the experimental identification of the aforementioned parameters.A mathematical model of a geared-rotor system has been developed using Lagrangian dynamics.Equations of motion are transformed into the frequency domain using the full-spectrum response analysis.These transformed equations are used to develop an identification algorithm(IA)based on least-squares fit to estimate the TE and gear mesh dynamic parameters.The system IA is initially verified using numerical simulations.The robustness of the algorithm is checked by introducing white Gaussian noise in the simulated responses.A geared-rotor experimental rig was developed and used to measure responses at gear locations in two orthogonal directions.Measured responses are transformed in the frequency domain using the full-spectrum analysis and used in the present novel IA to identify the gear parameters.The identified parameters are validated by comparing the numerically generated full-spectrum response using experimentally estimated parameters and that from the experimental rig.

关 键 词：Full-spectrum Geared-rotor system IDENTIFICATION Multiple faults Runouts Transmission error 

分 类 号：TH132.41[机械工程—机械制造及自动化]