液压支架数字孪生体联合建模方法

王宏伟; 武亚丹; 陈龙

doi:10.13272/j.issn.1671-251x.2022080010

液压支架数字孪生体联合建模方法

doi: 10.13272/j.issn.1671-251x.2022080010

王宏伟^{1, 2, 3,},
武亚丹^4, ,,
陈龙²

1.
太原理工大学山西省煤矿智能装备工程研究中心, 山西太原　030024
2.
太原理工大学机械与运载工程学院, 山西太原　030024
3.
山西焦煤集团有限责任公司博士后工作站, 山西太原　030024
4.
太原理工大学安全与应急管理工程学院, 山西太原　030024

基金项目: 国家重点研发计划项目（2020YFB1314004）；国家自然科学基金项目（52274157）；山西省揭榜招标项目（20201101005，20201101008）。

详细信息

作者简介:
王宏伟（1977—），女，黑龙江勃利人，教授，博士，博士研究生导师，主要研究方向为煤机装备智能化、人工智能与5G+智慧矿山等，E-mail：lntuwhw@126.com

通讯作者:
武亚丹（1998—），女，山西太原人，硕士研究生，研究方向为煤矿智能化、数字孪生建模，E-mail：784485624@qq.com

中图分类号: TD355
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出版历程
- 收稿日期: 2022-08-02
- 修回日期: 2022-10-08
- 网络出版日期: 2022-09-09

Hydraulic support digital twin joint modeling method

WANG Hongwei^{1, 2, 3
,},
WU Yadan^{4
, ,},
CHEN Long²

1.
Center of Shanxi Engineering Research for Coal Mine Intelligent Equipment, Taiyuan University of Technology, Taiyuan 030024, China
2.
College of Mechanical and Vehicle Engineering, Taiyuan University of Technology, Taiyuan 030024, China
3.
Postdoctoral Workstation, Shanxi Coking Coal Group Co., Ltd., Taiyuan 030024, China
4.
College of Safety and Emergency Management Engineering, Taiyuan University of Technology, Taiyuan 030024, China

摘要

摘要: 目前液压支架建模方法存在建模方式单一、缺乏模型内部动作表达等问题，难以实现数字孪生模型的深度知识挖掘，且液压支架的建模只单独研究机械或者液压部分，很难掌握其整体动态特性。针对上述问题，以掩护式液压支架ZY6800/08/18D作为研究对象，提出了一种液压支架数字孪生体联合建模方法。利用SolidWorks软件建立液压支架机械系统和液压系统的三维实体模型，将三维实体模型生成.sldasm格式文件导入MapleSim软件中，使用运动副连接机械部分，液压元件连接液压部分，建立液压支架机械系统孪生模型和液压系统孪生模型，二者联合，与物理体通过数据库进行数据交互与模型优化。为了使模型1∶1映射物理体，建立了液压支架数字孪生体，包括系统层、信息层、物理层。对构建好的液压支架数字孪生体进行虚实一致性实验，在物理体与孪生体立柱输入相同信号的条件下分析二者连杆的角度变化是否一致，验证模型的合理性与准确性。结果表明：物理体与孪生体连杆角度拟合度为0.986，接近1，拟合程度较好，表明真实数据驱动下的孪生模型位姿信息与物理体运行结果基本一致；连杆角度的整体误差为−0.198~ +0.185°，在倾角传感器精度范围内，满足精度要求。数字孪生模型运动规律符合液压支架实际运动状态，实现了物理体与其孪生体的相互映射和交互融合。
- 液压支架 /
- 数字孪生 /
- 机械系统 /
- 液压系统 /
- 联合建模 /
- 物理体 /
- 孪生体 /
- 虚实一致性
Abstract: The existing hydraulic support modeling method has the problems of single modeling mode and lack expression of internal actions of the model. It is difficult to realize deep knowledge mining of the digital twin model. The modeling of hydraulic support only studies the mechanical or hydraulic parts separately. It is difficult to master its overall dynamic characteristics. In order to solve the above problems, taking the shield hydraulic support ZY6800/08/18D as the research object, a hydraulic support digital twin joint modeling method is proposed. The three-dimensional solid models of the mechanical system and the hydraulic system of the hydraulic support are established by using the SolidWorks software. The three-dimensional solid model is imported into the MapleSim software by .sldasm file format. The kinematic pair is used for connecting the mechanical part, and the hydraulic element is used for connecting the hydraulic part. The twin models of the mechanical system and the hydraulic system of the hydraulic support are established. The twin models are combined to carry out data interaction and model optimization with the physical entity through a database. In order to make the model one to one mapping physical entity, the hydraulic support digital twin is established, including system layer, information layer and physical layer. The consistency experiment of virtual and real is carried out on the digital twin of the hydraulic support. Under the condition of inputting the same signal into the physical entity and the twin, the consistency of the angle change of the connecting rod between the physical entity and the twin is analyzed. The rationality and accuracy of the model are verified. The results show that the fitting degree of the angle of the connecting rod between the physical entity and the twin is 0.986, which is close to 1. The fitting degree is good, which indicates that the position and attitude information of the twin model driven by real data is basically consistent with the running result of the physical entity. The overall angle error of the connecting rod is from −0.198° to +0.185°, which meets the precision requirements within the precision range of the tilt sensor. The motion law of the digital twin model conforms to the actual motion state of the hydraulic support. The mutual mapping and mutual fusion between the physical entity and the digital twin are realized.
- hydraulic support /
- digital twin /
- mechanical system /
- hydraulic system /
- joint modeling /
- physical entity /
- twin /
- virtual reality consistency

HTML全文

图 1 液压支架三维装配模型

1−掩护梁； 2−顶梁； 3−立柱； 4−推移装置； 5−底座； 6−连杆。

Figure 1. Three dimensional assembly model of hydraulic support

下载: 全尺寸图片幻灯片

图 2 机械系统孪生模型

1−转动副；2−背部调整油缸；3−顶梁；4−立柱；5−球铰运动副；6−推移装置；7−底座；8−掩护梁。

Figure 2. Mechanical system twin model

下载: 全尺寸图片幻灯片

图 3 立柱液压系统孪生模型

1−恒流源；2−溢流阀；3−三位四通换向阀；4−液压缸；5−单向阀；6−立柱一级缸；7−位移传感器；8−立柱二级缸；9−活塞杆；10−逻辑与门；11−真值转换器；12−时间表；13−大于等于运算符；14−恒定电流；15−小于等于运算符。

Figure 3. Column hydraulic system twin model

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图 4 立柱二级缸液压系统仿真曲线

Figure 4. Simulation curves of hydraulic system of column two cylinder

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图 5 液压支架数字孪生体组成结构

Figure 5. Hydraulic support digital twin composition structure

下载: 全尺寸图片幻灯片

图 6 信号采集系统

Figure 6. Data acquisition system

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图 7 液压支架映射关系

Figure 7. Hydraulic support mapping relationship

下载: 全尺寸图片幻灯片

图 8 信号输入

Figure 8. Signal input

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图 9 支架连杆运动分析

Figure 9. Motion analysis of support connecting rod

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图 10 连杆角度误差曲线

Figure 10. Error curve of connecting rod angle

下载: 全尺寸图片幻灯片

表 1 液压支架机械结构添加约束

Table 1. Adding constraints to the mechanical structure of hydraulic support

第1构件	第2构件	约束类型
底座	连杆	转动副
掩护梁	连杆	转动副
顶梁	掩护梁	转动副
立柱一级缸	底座	球铰运动副
活塞杆	顶梁	球铰运动副
立柱一级缸	立柱二级缸	移动副
立柱二级缸	活塞杆	移动副

下载: 导出CSV

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