中心点控制技术在双轴四缸电液伺服试验机上的应用  

Application of Center Point Control Technology to Two-Axis Four-Cylinder Electro-Hydraulic Servo Testing Machine

作　　者：何雨奇 孙勇 云峰 李洪营 张宁含玉 周皓月 张国志 HE Yuqi;SUN Yong;YUN Feng;LI Hongying;ZHANG Ninghanyu;ZHOU Haoyue;ZHANG Guozhi(Sinotest Equipment Co.,Ltd.,Changchun130103,Jilin,China;Changchun Xuyang Faurecia Acoustics&Soft Trim Co.,Ltd.,Changchun130000,Jilin,China)

机构地区：[1]中机试验装备股份有限公司,吉林长春130103 [2]长春旭阳佛吉亚毯业有限公司,吉林长春130000

出　　处：《工程与试验》2024年第1期69-70,78,共3页Engineering and Test

摘　　要：为准确地反映复杂加载路径下的材料性能,近年来专家学者不断探索双轴拉伸试验方法,其中包括十字形试样法,但因试样的特殊性,常规的电液伺服试验机无法满足其试验要求,本文使用双轴四缸电液伺服试验机来解决此问题。由于试验过程中需要试样的中心位置固定,为此采用基于中心位置控制的方法,设计了双轴PID协调加载控制技术。经试验验证,双轴四缸试验机满足试样中心区偏移可控要求,确保加载的协调控制。In order to accurately reflect the material properties under complex loading paths,experts and scholars have continuously explored biaxial tensile test methods in recent years,including the cruciform sample method.However,due to the particularity of the sample,the conventional electro-hydraulic servo testing machine cannot meet its test requirements,so the two-axis four-cylinder electro-hydraulic servo testing machine is used to solve this problem.Because the center position of the sample needs to be fixed during the test,a biaxial PID coordinated loading control technology is designed based on the center position control method.It is verified by experiments that the two-axis four-cylinder testing machine meets the requirements of controllable deviation of the sample center area and ensures the coordinated control of loading.

关 键 词：双轴四缸 中心点控制 电液伺服试验机 

分 类 号：TH87[机械工程—仪器科学与技术]