橡胶钢丝绳复合隔振器动力学建模与参数识别  

Dynamic Model and Parameter Identification of Rubber and Wire-Cable Composite Vibration Isolator

作　　者：唐斌[1] 安西方[1] 何鑫[2] 金玉奇[2] 王正[1] 宋希庚[1] 

机构地区：[1]大连理工大学内燃机研究所,大连116024 [2]中国科学院大连化学物理研究所,中国科学院化学激光重点实验室,大连116023

出　　处：《振动．测试与诊断》2012年第5期746-749,861,共4页Journal of Vibration,Measurement & Diagnosis

基　　金：中国科学院化学激光重点实验室开放课题资助项目(编号:KLCL-2012-101);中央高校基本科研业务费专项资金资助项目(编号:DUT12JN12)

摘　　要：在电动试验台隔振试验研究的基础上,对橡胶钢丝绳复合隔振器进行了参数识别和动态建模。通过试验测得频响曲线的Hilbert变换,检测了复合隔振器的非线性度。建立复合隔振器的非线性动力学模型,应用分离识别法将非线性动力学方程组转化为关于未知参数的线性方程组,应用最小二乘法对隔振器的刚度和阻尼参数进行了识别。通过数值方法和谐波平衡法分析了识别系统的动态特性,计算与试验结果有较好的一致性。Based on the isolation behavior test with an electrodynamics shaker, the dynamic model for a rubber and wire-cable composite vibration isolator is developed and the parameters are identified. The Hilbert transform of the testing frequency response curves is used to examine the nonlinearity of the system. Nonlinear dynamic model for the composite isolator is established. The nonlinear dynamic equations that describe the dynamic behavior of the system are converted to a series of linear equations of the unknown parameters by using the separation recognition method. The least square method is used to identify the stiffness and damping parameters. The numerical and closed-from results for the identified system obtained by the numerical and harmonic balance methods are compared well with the testing results.

关 键 词：橡胶钢丝绳复合隔振器 HILBERT变换 动力学模型 非线性 参数识别 

分 类 号：TB535.1[理学—物理] O328[理学—声学]