基于传递函数的电液伺服阀和液压缸匹配性研究
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- 英文论文题名：Matching Research Between Servo Valve and Hydraulic Actuator Based on Transfer Function
- 论文作者：王晓英 ; 赵洪伟 ; 冯建民
- 英文论文作者：WANG Xiao-ying ; ZHAO Hong-wei ; FENG Jian-min ; Aircraft Strength Research Institute of China
- 年：2016
- 作者机构：中国飞机强度研究所;
- 论文关键词：飞机结构 ; 强度试验 ; 动态特性 ; 匹配性 ; 伺服液压 ; 频响
- 英文论文关键词：aircraft structure ; strength test ; dynamic characteristics ; matching ; servo hydraulic ; frequency response
- 会议召开时间：2016-07-15
- 会议录名称：2016航空试验测试技术学术交流会论文集
- 语种：中文
- 分类号：V216
- 学会代码：ZGHU
- 学会名称：中国航空学会
- 页数：4
- 文件大小：501k
- 原文格式：O
摘要
在大型飞机结构强度试验中,通过流量估计和载荷估算选取电液伺服阀和液压缸组成伺服液压加载系统,所以其动态特性难以获知,造成二者不匹配或匹配性较差,影响伺服液压加载系统的加载性能。为此,从频域上分别建立伺服阀和液压缸的传递函数,对其动态特性和匹配性进行仿真分析,并得到其频响曲线,定义了截止频率和伺服液压系统匹配性的关系,最后对该方法进行物理试验验证。该方法使得液压加载设备工作性能有较大提升,为大型飞机结构试验的伺服阀和液压缸的选型和设计提供了理论参考,减少了结构试验的准备时间。
In aircraft structural strength test,servo valve(SV) and hydraulic actuator(HA) are chosen by flow extimation and load estimated to construct the servo hydraulic loading system.Dynamic characteristics of SV and HA may be difficult to know,which affects the match between SV and HA.Therefore,transfer functions on SV and HA are estabished from the frequency domain.Matching and dynamic characteristics of servo hydraulic system are simulated and analyzed,the frequency response curve are obtained.Matching relationship between cut-off frequency and servo hydraulic system is defined.This study provides theoretical guidance for choosing and designing SV and HA.
In aircraft structural strength test,servo valve(SV) and hydraulic actuator(HA) are chosen by flow extimation and load estimated to construct the servo hydraulic loading system.Dynamic characteristics of SV and HA may be difficult to know,which affects the match between SV and HA.Therefore,transfer functions on SV and HA are estabished from the frequency domain.Matching and dynamic characteristics of servo hydraulic system are simulated and analyzed,the frequency response curve are obtained.Matching relationship between cut-off frequency and servo hydraulic system is defined.This study provides theoretical guidance for choosing and designing SV and HA.
引文
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[3]陈彬,刘阁,张贤明.基于动边界的阀控缸系统水击振动传输特性分析[J].机械科学与技术,2010,29(1):123-128.
[4]沈伟,崔霞.阀特性影响阀控缸伺服系统跟踪性能仿真分析[J].计算机仿真,2014,31(8):213-216,277.
[5]陈聪,孙志毅,柏艳红.基于AMESim的气动阀控缸系统特性的研究[J].机床与液压,2014,42(19):34-37.
[6]李昌,叶正茂,黄其涛.基于阻抗控制的阀控缸系统动态特性分析[J].机械设计与制造,2012,32(4):201-203.
[7]张利平.液压控制系统设计与使用[M].北京:化学工业出版社,2013.
[8]宋志安,曹连民,黄靖,等.MATLAB/Simulink与液压控制系统仿真[M].北京:国防工业出版社,2013.
[9]Jelali M,Kroll A.Hydraulic Servo-systems:Modelling,Identification and Control[M].Springer,2003.
[10]叶小华,岑豫皖,赵韩,等.基于液压弹簧刚度的阀控非对称缸建模仿真[J].中国机械工程,2011,22(1):19-21.