文章摘要
马立瑞.长管道对阀控缸液压系统动态特性的影响[J].机床与液压,2016,44(23):144-147
长管道对阀控缸液压系统动态特性的影响
Effect of Long Pipe on Dynamic Characteristics of Valve Controlled Cylinder Hydraulic System
  
DOI:10.3969/jissn1001-3881201623034
中文关键词: 阀控对称缸  长管道  分布参数模型  编程
英文关键词: Valve control cylinder  Long pipeline  Distributed parameter model  Programming
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作者单位E-mail
马立瑞 燕山大学机械工程学院 534159170@qq.com 
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中文摘要:
      通过利用管道算子将阀的压力-流量方程转换成负载的压力-流量方程,将管道的分布参数模型与阀控对称缸液压系统的模型相结合,建立起整个系统的传递函数,通过MATLAB编程绘制该系统的Bode图,并得出管道长度和内径对阀控对称缸液压系统快速性与稳定性的影响。结果表明:管道直径和内径的增加都会使系统固有频率降低,系统频响变慢;管道效应对系统中高频特性影响明显,系统中高频幅值特性出现波动,相频特性出现阶梯式滞后。
英文摘要:
      By using the pipeline operator, the pressure flow equation of valve was converted into the one of load. The distributed parameter model and the model of valve controlled symmetrical cylinder hydraulic system were combined to establish the transfer function of the whole system. Bode diagram of the system was drawn by MATLAB programming, and the impact of length and internal diameter of pipe on the quickness and stability of valve controlled symmetry cylinder hydraulic system was obtained. The results show that the increase of pipe diameter and inner diameter will decrease the natural frequency of the system, and the frequency response of the system slows down. The pipeline effect has obvious effect on the high frequency characteristics of the system, the mid high frequency amplitude characteristic fluctuates, and the phase frequency characteristic exhibits step lag.
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