三自由度加载系统高精度加载控制方法试验研究

许国山1,2,3,郑雪梅1,2,3,陈琦1,2,3,王贞1,2,3

振动与冲击 ›› 2020, Vol. 39 ›› Issue (12) : 23-31.

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振动与冲击 ›› 2020, Vol. 39 ›› Issue (12) : 23-31.
论文

三自由度加载系统高精度加载控制方法试验研究

  • 许国山1,2,3,郑雪梅1,2,3,陈琦1,2,3,王贞1,2,3
作者信息 +

Experimental verification of a high-precision loading control method for a loading system with three degrees of freedom

  • XU Guoshan1,2,3,ZHENG Xuemei1,2,3,CHEN Qi1,2,3,WANG Zhen1,2,3
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摘要

本文针对三自由度加载系统,对其控制方法进行了较为系统的研究。首先,对现有较为精确的控制方法进行了分析介绍,然后利用三自由度拟静力试验加载控制软件,在哈尔滨工业大学大型多功能三自由度加载系统上进行了弯剪试验验证,对比分析竖向基于作动器反馈的力-位移混合控制方法,竖向基于LVDT反馈的力-位移混合控制方法和考虑几何非线性的控制方法的准确性。研究结果表明:考虑几何非线性的控制方法对三自由度加载试验的控制最为准确。

Abstract

The control method of the three-degree-of-freedom loading system is systematically studied in this paper. First of all, the existing more accurate control methods are analyzed and introduced. Then, the bending and shear test was carried out on the large-scale multi-function three-degree-of-freedom loading system of Harbin Institute of Technology with the three-degree-of-freedom loading control software. The article analyzes the accuracy of the force-displacement mixed control (based on actuator feedback in the vertical direction) method,the force-displacement mixed control (based on LVDT feedback in the vertical direction) method and the force-displacement mixed control method considering the geometric nonlinearity. It is shown that the force-displacement mixed control method considering the geometric nonlinearity is the most accurate for the control of the three-degree-of-freedom loading test.

关键词

三自由度加载系统 / 力-位移混合控制方法 / 几何非线性 / 控制软件 / 拟静力试验

Key words

  / loading system with three degrees of freedom, force-displacement mixed control method, geometric nonlinearity, controlling software, quasi-static test

引用本文

导出引用
许国山1,2,3,郑雪梅1,2,3,陈琦1,2,3,王贞1,2,3. 三自由度加载系统高精度加载控制方法试验研究[J]. 振动与冲击, 2020, 39(12): 23-31
XU Guoshan1,2,3,ZHENG Xuemei1,2,3,CHEN Qi1,2,3,WANG Zhen1,2,3. Experimental verification of a high-precision loading control method for a loading system with three degrees of freedom[J]. Journal of Vibration and Shock, 2020, 39(12): 23-31

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