伺服阀控液压缸对液压系统动态特性影响的仿真研究
|
摘要
伺服阀控液压缸是液压伺服控制系统的重要组成部分,对系统的动态特性有很大的影响。为了改善一种钢带张力控制液压伺服系统的动态性能,建立了伺服阀和液压缸的数学模型,对影响伺服阀控液压缸性能的主要参数进行理论分析,利用Hy Pneu软件对系统进行仿真。仿真结果与理论分析结果相符,研究结果表明:液压缸活塞所受的摩擦力、液压缸内径、油源压力和油液弹性模量对系统动态特性均有一定的影响。
Servo valve control hydraulic cylinder is an important component of the hydraulic servo control system,which has significant influence on the dynamic characteristics of the system. In order to improve the dynamic performance of a steel strip tension control hydraulic servo system,the mathematical models of servo valve and hydraulic cylinder are established,and the main parameters that affect the performance of servo valve controlled hydraulic cylinder are analyzed from the theoretical aspect. Then the system is studied with Hy Pneu software. The simulation results are in agreement with the theoretical results,the research results show that the hydraulic cylinder inner diameter,friction on piston of hydraulic cylinder,oil pressure,oil elastic modulus have a certain influence on the dynamic characteristics of the system.
Servo valve control hydraulic cylinder is an important component of the hydraulic servo control system,which has significant influence on the dynamic characteristics of the system. In order to improve the dynamic performance of a steel strip tension control hydraulic servo system,the mathematical models of servo valve and hydraulic cylinder are established,and the main parameters that affect the performance of servo valve controlled hydraulic cylinder are analyzed from the theoretical aspect. Then the system is studied with Hy Pneu software. The simulation results are in agreement with the theoretical results,the research results show that the hydraulic cylinder inner diameter,friction on piston of hydraulic cylinder,oil pressure,oil elastic modulus have a certain influence on the dynamic characteristics of the system.
引文
[1]强宝民,刘保杰.电液比例阀控液压缸系统建模与仿真[J].起重运输机械,2011(11):35-39.
[2]李新平,霍族亮,于仁萍,等.基于Matlab/Simulink的液压缸建模与仿真[J].煤矿机械,2005(7):49-51.
[3]李洪人,关广丰,郭洪波,等.考虑阀口误差的阀控非对称液压缸系统建模、仿真与试验[J].机械工程学报,2007(9):33-39.
[4]任建华,谢建,李良.基于Simulink/Sim Hydraulics的阀控二级液压缸系统的建模与仿真[J].机床与液压,2012(23):155-157.
[5]谢建,罗治军,田桂,等.基于AMESim的多级液压缸建模与仿真[J].机床与液压,2010(7):126-129.
[6]郭旭升.基于AMESim的数字液压缸建模与动态特性仿真[D].天津:天津大学,2013.
[7]张宪宇,陈小虎,何庆飞.基于AMESim的液压缸故障建模与仿真[J].液压气动与密封,2011(10):26-28,48.
[2]李新平,霍族亮,于仁萍,等.基于Matlab/Simulink的液压缸建模与仿真[J].煤矿机械,2005(7):49-51.
[3]李洪人,关广丰,郭洪波,等.考虑阀口误差的阀控非对称液压缸系统建模、仿真与试验[J].机械工程学报,2007(9):33-39.
[4]任建华,谢建,李良.基于Simulink/Sim Hydraulics的阀控二级液压缸系统的建模与仿真[J].机床与液压,2012(23):155-157.
[5]谢建,罗治军,田桂,等.基于AMESim的多级液压缸建模与仿真[J].机床与液压,2010(7):126-129.
[6]郭旭升.基于AMESim的数字液压缸建模与动态特性仿真[D].天津:天津大学,2013.
[7]张宪宇,陈小虎,何庆飞.基于AMESim的液压缸故障建模与仿真[J].液压气动与密封,2011(10):26-28,48.