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以 BJ2 12汽车为研究对象 ,建立了轮式车辆传动系动力学模型 ,研究了硬激励自激振动稳定性的分析方法 ,推导出具有负反馈作用非线性阻尼力矩及线性部分传递函数的表达式。找到了传动系平衡点的全局渐近稳定性条件 ,首次用波波夫稳定性判别法分析了传动系中硬激励自激振动产生的原因和条件 ,找出影响传动系稳定性的因素。从而得出如下结论 :若系统负阻尼反馈力矩曲线位于波波夫直线和横轴之间 ,则相应系统平衡点全局渐近稳定
Taking the BJ2 12 vehicle as the research object, a dynamic model of a wheeled vehicle powertrain was established. The analysis method of the stability of the stiff excitation self-excited vibration was studied. The expression of the nonlinear damping torque and the linear partial transfer function . The condition of global asymptotic stability of the driveline balance point was found. For the first time, the reason and condition of hard excitation self - excited vibration in the driveline were analyzed by the method of Popov stability, and the factors affecting the stability of the driveline were found out. The conclusion is drawn as follows: If the system negative damping feedback torque curve is located between Popov linear and horizontal axis, the corresponding system equilibrium point is globally asymptotically stable