凿岩过程推进压力反馈防卡钎计算机控制

COMPUTERCONTROLLED ANTIJAMMING TECHNOLOGY BY FEEDBACK OF FEED OIL PRESSURE IN ROCKDRILLING PROCESS

根据凿岩过程中钎头进入溶洞卡钎区时推进压力的变化特征，提出了利用推进压力反馈自动进行防溶洞卡钎控制。通过对推进压力反馈自动防卡钎控制条件的研究分析，确定了自动防溶洞卡钎的计算机控制模型，并进行了防溶洞卡钎性能仿真计算和实验测试。理论分析计算和实验结果表明，计算机控制的防溶洞卡钎性能，优于纯液压控制的防溶洞卡钎性能；在三种防卡钎控制条件中，推进压力相对时间变化量的条件最好。

According to the variance feature of the feed oil pressure when drill bit coming into rockdrilling jamming area in hydraulic rockdrilling process, it was put forward that the feedback of the feed oil pressure can be applied to control rockdrilling antijamming. Based on the analysis of the control condition of rockdrilling antijamming by the feedback of the feed oil pressure, a computercontrolled model was established.