基于数据驱动补偿的液压凿岩机能耗预测研究

RESEARCH ON ENERGY CONSUMPTION PREDICTION OF HYDRAULIC ROCK DRILLS BASED ON DATA-DRIVEN COMPENSATION

  • 摘要: 针对电动凿岩台车在钻进作业中能耗偏高的问题,该文设计了一种融合物理机理与数据驱动的能耗混合预测模型。建立液压凿岩机能量传递方程及Amesim仿真模型,并结合凿岩实验分析了压力参数与岩石性质对能耗的影响。研究发现,提高冲击压力虽可加快钻进速度,但会同步增加能耗。推进压力过低将引起空打,过高的缓冲压力则会改变钎具受力分布。岩石强度与波阻抗特征决定了能耗的响应模式,其中花岗岩的能耗显著大于砂岩和灰岩。以仿真模型为基础,引入最小二乘支持向量机(Least Squares Support Vector Machine, LSSVM)构建数据补偿环节;为提高模型整体性能,采用正余弦算法(Sine Cosine Algorithm, SCA)对LSSVM超参数进行自动寻优,最终形成混合驱动预测模型。实验结果表明,该混合模型的预测平均绝对百分比误差(Mean Absolute Percentage Error, MAPE)为1.61%,较单一LSSVM模型和纯物理模型分别降低了2.69%与5.58%,显著提升了能耗预测的精度与可靠性。

     

    Abstract: To address the issue of high energy consumption in drilling operations of electric drill jumbos, this paper proposes a hybrid energy consumption prediction model that integrates physical mechanisms with data-driven methods. The energy transfer equation and an Amesim simulation model of the hydraulic rock drill are established, and the effects of pressure parameters and rock properties on energy consumption are analyzed through rock drilling experiments. The results show that increasing the impact pressure can accelerate the penetration rate but simultaneously leads to higher energy consumption. Insufficient feed pressure causes idle striking, while excessively high damping pressure alters the force distribution on the drill tool. The response pattern of energy consumption is governed by rock strength and wave impedance characteristics, with granite exhibiting significantly higher energy consumption than sandstone and limestone. Based on the simulation model, a least squares support vector machine (LSSVM) is introduced to construct a data compensation module. To enhance the overall model performance, a sine cosine algorithm (SCA) is employed to automatically optimize the hyperparameters of LSSVM, ultimately forming a hybrid-driven prediction model. Experimental results demonstrate that the proposed hybrid model achieves a mean absolute percentage error (MAPE) of 1.61%, which is 2.69% and 5.58% lower than that of the standalone LSSVM model and the pure physical model, respectively, substantially improving the accuracy and reliability of energy consumption prediction.

     

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