基于多轴同步控制的微尺度双向加载实验系统

doi:10.13700/j.bh.1001-5965.2018.0219

北京航空航天大学学报 ›› 2019, Vol. 45 ›› Issue (1): 174-182.doi: 10.13700/j.bh.1001-5965.2018.0219

基于多轴同步控制的微尺度双向加载实验系统

熊晶洲, 万敏, 孟宝, 赵越超, 吴向东

北京航空航天大学机械工程及自动化学院, 北京 100083

收稿日期:2018-04-20 修回日期:2018-07-13 出版日期:2019-01-20 发布日期:2019-01-28
通讯作者: 孟宝 E-mail:mengbao@buaa.edu.cn
作者简介:熊晶洲,男,硕士研究生。主要研究方向:超薄板屈服行为;万敏,男,博士,教授,博士生导师。主要研究方向:精密成形与微结构制造技术;孟宝,男,博士,副教授,博士生导师。主要研究方向:航空薄壁微结构成形制造技术;吴向东,男,博士,副教授。主要研究方向:金属薄板表征与实验技术。
基金资助:
国家自然科学基金（51605018）

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

XIONG Jingzhou, WAN Min, MENG Bao, ZHAO Yuechao, WU Xiangdong

School of Mechanical Engineering and Automation, Beihang University, Beijing 100083, China

Received:2018-04-20 Revised:2018-07-13 Online:2019-01-20 Published:2019-01-28
Supported by:
National Natural Science Foundation of China (51605018)

摘要/Abstract

摘要： 针对目前微细成形中材料屈服、强化行为实验研究的不足，提出通过建立多轴同步控制的微尺度双向加载实验系统，实现超薄板在复杂加载路径下的性能表征测试。双向加载实验系统基于四轴独立驱动的硬件组成和上、下位机分布式控制策略，采用数字散斑测量（DIC）计算实验过程的应变。通过建立交流永磁同步电机（PMSM）控制模型，辨识了速度闭环控制参数。在非线性PID控制方法实现单轴位置闭环控制的基础上，基于虚拟主轴法实现了不同位移/载荷比例条件下的四轴同步运动。双向加载实验结果表明：同步控制精度满足位移小于等于0.02 mm、载荷小于等于0.05 kN的要求，可用于超薄板微尺度屈服和强化行为的实验研究。

关键词: 微细成形, 屈服强化行为, 微尺度双向加载系统, 虚拟主轴法, 同步控制

Abstract: 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.

Key words: microforming, yielding and hardening behavior, micro-scaled biaxial loading system, virtual axis method, synchronous control

中图分类号:

TG381

熊晶洲, 万敏, 孟宝, 赵越超, 吴向东. 基于多轴同步控制的微尺度双向加载实验系统[J]. 北京航空航天大学学报, 2019, 45(1): 174-182.

XIONG Jingzhou, WAN Min, MENG Bao, ZHAO Yuechao, WU Xiangdong. Micro-scaled biaxial loading test system based on multi-axis synchronous control[J]. JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2019, 45(1): 174-182.

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基于多轴同步控制的微尺度双向加载实验系统

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

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