截齿截割载荷谱重构的正则参数优化策略

为有效提取及识别截割载荷谱特征,提高煤岩破碎效率,针对有限的镐型截齿实验载荷谱,应用Tikhonov正则化方法,分析其载荷谱在不同正则参数下的重构效果,给出载荷谱重构的最优正则参数选取策略,探讨选取不同正则参数策略对载荷谱重构的影响程度.结果表明：广义交叉法（GCV）比L-曲线准则更能够选取最优的正则参数,其重构载荷谱特征易于识别和提取,且能够反映煤岩实际破碎状态.

Regularization parameter optimization strategy of reconstructing load spectrum

Aimed at effectively extracting and identifying the feature of cutting load spectrum to improve the crushing efficiency of coal and rock,this paper,drawing on the limited conical pick experiment load spectrum and applying Tikhonov regularization method,analyzes the reconstruction results of its load spectra at different regularization parameter,offers the regularization parameter optimization strategy of reconstructing load spectrum,and explores influence of a different regularization parameter strategy on the load spectrum reconstruction.The results show that generalized cross method （GCV） is more capable of selecting the optimal regularization parameters than L-curve criterion and shows the eigenvalues of load spectrum reconstruction more likely to be identified and extracted,which can characterize the actual fragmentation of coal and rock.