Design of Digital Twin Cutting Experiment System for Shearer
Abstract
:1. Introduction
- In situ experiments, where sensors and measurement instruments are deployed directly on the mining face to gather operational signals from coal and rock for subsequent analysis and evaluation [8];
2. Design of the Simulated Shearer Drum
2.1. Principle of Similarity Theory
2.2. Design of the Simulated Drum
3. The Device Structure of the Experimental Platform
- The design and improvement of the spindle part—the primary task is to develop a spindle part suitable for the experimental device, including designing an appropriate drum device and connecting it to the machine tool’s spindle. This step is vital to ensuring that the machine tool can perform the required experimental operations.
- The integration of sensors and data acquisition systems—to accurately monitor and evaluate various parameters during the experimental process, the experimental device integrates efficient sensors and data acquisition systems. This includes measuring physical parameters such as force, temperature, and vibration, and involves the real-time collection, processing, and analysis of data to ensure the accuracy and reliability of experimental results.
- The development and application of the numerical control system—an advanced numerical control system has been developed to precisely control the spindle cutting motor and the workbench motor. This system is not only easy to use but also provides high precision and rapid response control, meeting the complex experimental requirements and changing work conditions.
3.1. Design of the Experimental Platform Spindle
3.2. Design of the Sensor and Acquisition System
3.2.1. Drum-Monitoring Sensor System
3.2.2. Platform Monitoring Sensor System
3.3. Design of the Control System
4. Software System Design in Digital Space
4.1. Application Service Layer
4.2. Model Layer
4.2.1. Geometric Model
4.2.2. Mechanism Model
4.3. Data Layer
4.4. Digital Twin System Interaction Interface
5. Simulated Cutting Experiments
5.1. Preparation of Simulated Coal Sample
- Experimental mode one—cutting ratio simulated coal seam material, with a compressive strength of 2.71 MPa and a density of 1388.46 kg/m3;
- Experimental mode two—cutting ratio simulated coal seam material, with a compressive strength of 3.46 MPa and a density of 1506.56 kg/m3;
- Experimental mode three—cutting ratio simulated coal seam material, with a compressive strength of 4.13 MPa and a density of 1658.45 kg/m3.
5.2. Time Domain Analysis of Sensor Signals
5.2.1. Analysis of Infrared Thermal Imaging
5.2.2. Analysis of the Force Sensor Signals
5.2.3. Analysis of the Torque Sensor Signals
6. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Parameters | Symbols | Units | M | L | T |
---|---|---|---|---|---|
Drum diameter | D | mm | 0 | 1 | 0 |
Blade outer edge diameter | Dy | mm | 0 | 1 | 0 |
Drum cut depth | B | mm | 0 | 1 | 0 |
Spiral blade lift angle | αy | ° | 0 | 0 | 0 |
lead of the blade | L | mm | 0 | 1 | 0 |
Blade head number | Z | null | 0 | 0 | 0 |
Blade pitch | Sy | mm | 0 | 1 | 0 |
Blade hub wrap angle | βy | ° | 0 | 0 | 0 |
Pick pitch | Tc | mm | 0 | 1 | 0 |
Pick installation angle | γ | ° | 0 | 0 | 0 |
Pick inclination angle | λs | ° | 0 | 0 | 0 |
Rotating speed of drum | n | r/min | 0 | 0 | −1 |
Traction speed | v | m/min | 0 | 1 | −1 |
Density | ρ | kg/m3 | 1 | −3 | 0 |
Compressive strength | σ | Mpa | 1 | −1 | −2 |
Parameters | n | ρ | D | v | σ |
---|---|---|---|---|---|
Index | a1 | a2 | a3 | a4 | a5 |
M | 0 | 1 | 0 | 0 | 1 |
L | 0 | −3 | 1 | 1 | −1 |
T | −1 | 0 | 0 | −1 | −2 |
Prototype | Model | Prototype | Model |
---|---|---|---|
D | D/3 | Tc | Tc/3 |
Dy | Dy/3 | γ | γ |
B | B/3 | λs | λs |
αy | αy | n | n |
L | L/3 | v | v/ |
Z | Z | ρ | ρ |
Sy | Sy/3 | σ | σ/3 |
βy | βy |
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Miao, B.; Li, Y.; Guo, Y. Design of Digital Twin Cutting Experiment System for Shearer. Sensors 2024, 24, 3194. https://doi.org/10.3390/s24103194
Miao B, Li Y, Guo Y. Design of Digital Twin Cutting Experiment System for Shearer. Sensors. 2024; 24(10):3194. https://doi.org/10.3390/s24103194
Chicago/Turabian StyleMiao, Bing, Yunwang Li, and Yinan Guo. 2024. "Design of Digital Twin Cutting Experiment System for Shearer" Sensors 24, no. 10: 3194. https://doi.org/10.3390/s24103194
APA StyleMiao, B., Li, Y., & Guo, Y. (2024). Design of Digital Twin Cutting Experiment System for Shearer. Sensors, 24(10), 3194. https://doi.org/10.3390/s24103194