轮式车辆动力传动系自激振动研究(Ⅲ)——自激振动系统的稳定性分析

Research on the Self Excited Vibration in Wheeled Vehicle Powertrain(Part Ⅲ) ——Stability Analysis of the Self Excited Vibration System

摘要: 该文建立了整车振动系统（包括整车垂直振动系统、整车纵向振动系统和动力传动系统）的力学模型，对整车振动的非线性运动微分方程在平衡点附近线性化，根据当量线性化系统在状态空间中的特征值判断系统的稳定性，并作出了影响系统在外界参数空间的临界稳定曲面，为研究抑制自激振动的措施提供理论依据

Abstract: In this paper, the mechanics model of vehicle vibration(include vehicle vertical vibration,vehicle longitudinal vibration and torsional vibration of the powertrain) was established. The nonlinear differential equations of vehicle vibration were linearized at the balance point and its eigenvalues were calculated to judge the stability of the vehicle vibration system. In addition, a critical stability parameter surface to show the stable area was drawn to provide a theory for supressing self-excited vibration.