Micro-scaled biaxial loading test system based on multi-axis synchronous control

被引：0
|
作者：
Xiong J. [1 ]
Wan M. [1 ]
Meng B. [1 ]
Zhao Y. [1 ]
Wu X. [1 ]
机构：
[1] School of Mechanical Engineering and Automation, Beihang University, Beijing
来源：
Beijing Hangkong Hangtian Daxue Xuebao/Journal of Beijing University of Aeronautics and Astronautics | 2019年 / 45卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Micro-scaled biaxial loading system; Microforming; Synchronous control; Virtual axis method; Yielding and hardening behavior;
D O I：
10.13700/j.bh.1001-5965.2018.0219
中图分类号：
学科分类号：
摘要：
Aimed at the currently insufficient experimental condition for the research on yielding and hardening behavior in microforming of ultrathin sheets, a micro-scaled biaxial loading test system was presented, which can achieve complex loading paths. The system is characterized with four independent driving axes in hardware, coupled with separated upper computer and lower computer in software structure. The digital image correlation (DIC) method is adopted to capture deformation strain in the biaxial tension process. The control model of permanent magnet synchronous motor (PMSM) was first established, and the control parameters of speed closed loop were identified. The control accuracy of single-axis position closed-loop is significantly improved by using the nonlinear PID control method, and the four-axis synchronous control under diverse displacement/load ratios is realized on the basis of virtual axis method. The biaxial loading experiment reveals that the system satisfies the requirements of displacement synchronization error within 0.02 mm and load synchronization error within 0.05 kN. The developed system can thus be used for experimental research on yielding and hardening behavior of ultrathin sheet. © 2019, Editorial Board of JBUAA. All right reserved.
引用
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页码：174 / 182
页数：8
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