Research Article
Performance Analysis of Natural γ-Ray Coal Seam Thickness Sensor and Its Application in Automatic Adjustment of Shearer’s Arms
Table 1
Analysis of coal seam thickness measurement error.
| | Count value (pulse/0.5 s) | 222 | 193 | 186 | 167 | 157 |
| | Actual coal seam thickness (mm) | 0 | 50 | 100 | 150 | 200 |
| | Instrument measurements value (mm) | −16.4 | 59 | 81.1 | 158 | 227 |
| | Absolute error value (mm) | −16.4 | 9 | −18.9 | 8 | 27 |
| | Relative error value (%) | — | 4.5 | −9.5 | 4 | 13.5 |
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