摘要
分析了双腔室空气弹簧工作过程中各物理量的变化,依据绝热过程中的能量交换推导了双腔室空气弹簧的理论模型。为了提高模型的精确性,对单自由度空气弹簧实验装置进行实验,使用LMS采集系统获取输入量和输出量,得到双腔室空气弹簧的实测传递函数。在实验数据的基础上分析了密封膜结构对空气弹簧模型的影响,提出了改进的模型,并通过参数识别方法确定未知参数的值。最后将改进模型与理论模型及实测数据进行对比,证明了改进模型的有效性。
This paper analyzes the change of physical quantity in the working process of dual-chamber pneumatic spring,and gives the derivation process of the theoretical model based on energy exchange of adiabatic process.In order to improve the accuracy of the model,a single degree of freedom experimental device is built,and LMS measurement system is used to get the transfer function of dual-chamber pneumatic spring by acquiring the input and output of the device.An improved model is proposed after considering the influence of the diaphragm seal on the spring,and the unknown parameters are determined via parameter identification method.The new model proves to be efficient by comparison between the two models and experimental data.
出处
《机械制造与自动化》
2013年第6期21-24,43,共5页
Machine Building & Automation
基金
国家科技重大专项资助项目(2009ZX02208-010)
关键词
双腔室空气弹簧
实验建模
密封膜
dual-chamber pneumatic spring
experimental modeling
diaphragm seal
作者简介
武文山（1987-）,男,山东泰安人,硕士研究生,主要从事超精密气浮减振和测试方面的研究.
