摘要
根据摄动法求解非线性微分方程理论,通过单自由度振动系统在单位脉冲激励下动力学方程的解析解,推导出了振动系统时域响应的非线性自回归时序(GNAR)模型表达式,获得了基于GNAR模型的悬架隔振性能主要指标计算公式。通过对某汽车悬架隔振参数辨识的试验结果表明,基于GNAR模型的悬架隔振性能辨识方法准确、便捷,能实现对在用车辆悬架隔振性能的快速辨识和评价。
First, based on the perturbation method of solving nonlinear differential equation theory, general expression for nonlinear autoregressive（GNAR） model is derived for vibration system time domain response with unit pulse excitation and the calculation formulas of vehicle suspension anti- vibration performance indexes are obtained based on parameters of GNAR model. Finally the vehicle suspension vibration isolation parameter identification experiments are carried on, the results show that the method is accurate and convenient to realize a rapid identification and evaluation of the suspension vibration isolation performance for vehicles in use.
出处
《汽车技术》
北大核心
2016年第4期31-35,共5页
Automobile Technology
基金
国家自然科学基金项目(51305194)
江苏省自然科学基金项目(BK20130746)
