Torsional vibration suppression and electromechanical coupling characteristics of electric drive system considering misalignment  

作　　者：Jinxin DOU Zhenping LI Hongliang YAO Muchuan DING Guochong WEI 

机构地区：[1]School of Mechanical Engineering and Automation,Northeastern University,Shenyang,110819,China [2]China North Vehicle Research Institute,Beijing,100072,China

出　　处：《Applied Mathematics and Mechanics(English Edition)》2024年第11期1987-2010,共24页应用数学和力学（英文版）

基　　金：Project supported by the National Natural Science Foundation of China(Nos.52075084 and 52475094);the Fundamental Research Funds for the Central Universities of China(No.N2303005)。

摘　　要：The torque ripples resulting from external electromagnetic excitation and mechanical internal excitation contribute to significant torsional vibration issues within electromechanical coupling systems.To mitigate these fluctuations,a passive control strategy centered around a multi-stable nonlinear energy sink(MNES)is proposed.First,models for electromagnetic torque,gear nonlinear meshing torque,and misalignment torque are established.Building upon this foundation,an electromechanical coupling dynamic model of the electric drive system is formulated.Sensitivity analysis is conducted to determine the sensitive nodes of each mode and to provide guidance for the installation of the MNES.The structure of the MNES is introduced,and an electromechanical coupling dynamic model with the MNES is established.Based on this model,the influence of the misaligned angle on the electromechanical coupling characteristics is analyzed.In addition,the vibration suppression performance of the MNES is studied under both speed and uniform speed conditions.Finally,experimental testing is conducted to verify the vibration suppression performance of the MNES.The results indicate that misalignment triggers the emergence of its characteristic frequencies and associated sidebands.Meanwhile,the MNES effectively mitigates the torsional vibrations in the coupled system,demonstrating suppression rates of 52.69%in simulations and 63.3%in experiments.

关 键 词：electric drive system electromechanical coupling nonlinear energy sink(NES) MISALIGNMENT 

分 类 号：TH132.41[机械工程—机械制造及自动化] TH113.1