介电识别方法和基于频率转移特征的煤系统设计
Xinquan Wang1, Meng Wu2, Panpan Zhao2
1Zhoukou Normal University, Wenchang Road 6, Zhoukou, 466001, Henan, China. wxq995@126.com.
Scientific reports
|March 14, 2025
概括
这项研究通过介电性质和频率转移来增强煤炭带的识别. 一个支持向量机器模型实现了98.3%的准确性,改善了地下分离.
科学领域:
- 电气工程 电气工程
- 地质技术工程 地质技术工程
- 材料科学 材料科学 材料科学
背景情况:
- 精确识别煤炭流对于高效的采矿操作至关重要,尤其是在具有挑战性的地下环境中.
- 现有的介电识别方法在变化的地下条件下存在精度限制.
- 激发频率的变化显著影响煤炭的介电性质.
研究的目的:
- 为了研究激发频率变化对煤介电性质的影响.
- 开发一个增强的介电识别方法,用于地下采矿中的煤.
- 为了提高煤炭标识和分离的准确性.
主要方法:
- 设计和建造了一种介电识别系统,用于收集0.4MHz和0.5MHz的煤的响应信号.
- 变化模式分解 (VMD) 结合中位数降噪被用于信号分析.
- 开发了八种识别模型,包括支持向量机 (SVM),K-近邻 (KNN),概率神经网络 (PNN) 和反向传播 (BP).
主要成果:
- VMD和中位数降噪技术优化了降噪,提高了信号与噪声的比率,并减少了根平均平方误差.
- 实际电压值和频率组件被提取到煤炭道样本中.
- 支持矢量机 (SVM) 识别模型显示了98.3%的高精度.
结论:
- 基于频率转移特征的拟议介电识别方法有效地提高了煤识别的准确性.
- 在煤炭标识方面,SVM模型显著优于其他测试模型 (KNN,PNN,BP).
- 这项研究提供了一种新且准确的方法,用于解决地下采矿环境中的煤分离挑战.
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