Volume 48 Issue 10
Oct.  2022
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Article Navigation >  Journal of Mine Automation  > 2022  >  48(10): 13-19
WANG Hongwei, WU Yadan, CHEN Long. Hydraulic support digital twin joint modeling method[J]. Journal of Mine Automation，2022，48(10)：13-19.  doi: 10.13272/j.issn.1671-251x.2022080010
Citation: WANG Hongwei, WU Yadan, CHEN Long. Hydraulic support digital twin joint modeling method[J]. Journal of Mine Automation，2022，48(10)：13-19.  doi: 10.13272/j.issn.1671-251x.2022080010
shu

Hydraulic support digital twin joint modeling method

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

  • Received Date: 2022-08-02
  • Rev Recd Date: 2022-10-08
    • Available Online: 2022-09-09
    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.

     

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