基于截割声信号识别的采煤机电液比例调高控制系统研究

项目名称： 基于截割声信号识别的采煤机电液比例调高控制系统研究

项目编号： No.51475001

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 机械、仪表工业

项目作者： 彭天好

作者单位： 安徽理工大学

项目金额： 85万元

中文摘要： 随着煤矿开采高产高效发展战略的逐步实施，采煤机截割滚筒自动调高系统及其控制技术越来越成为制约工作面自动化水平的技术瓶颈。本项目针对目前采煤机滚筒调高系统存在的问题，提出采用电液比例调高液压系统，建立系统的数学模型，与传统的开关式调高液压系统进行特性对比分析；搭建采煤机模拟截割实验系统，提出以截割声信号特征为主体的多传感器数据融合煤岩界面识别新方法；以记忆截割法为基础，研究煤岩界面预测与截割轨迹优化算法，确定期望截割轨迹；研究轨迹规划算法；建立电液比例自动调高控制系统虚拟样机仿真模型和实验系统，研究复杂煤层下的大惯量重载变速行走工况条件的跟踪控制，提出合理可行的控制结构和跟踪控制策略，建立采煤机电液比例自动调高控制理论。研究成果对于实现采煤机自动调高和综采工作面的自动化与无人化具有重要的理论意义和应用价值。

中文关键词： 声音信号；电液比例控制；自动调高；煤岩界面识别；采煤机

英文摘要： With the implementation of coal mine high yield and high efficiency development strategy step by step, shearer cutting drum automatic height adjustment system and its control technology become the bottleneck restricting the automation level of working face. Aiming at the existing problem of the shearer drum height adjustment system, this project proposes using electro-hydraulic proportional height adjustment system. The mathematical model of this system is established. Its characteristic is compared with traditional switching height adjustment hydraulic system. The shearer simulation cutting experiment system is built. The new method of multi-sensor data fusion coal-rock interface recognition taking the cutting sound signal as the main signal is proposed. Based on memory cutting, the coal-rock interface prediction and cutting path optimization algorithm are studied. The desired cutting trajectory and its planning algorithm are determined. The virtual prototype simulation model and the experimental device of the electro-hydraulic proportional automatic height adjustment control system are built. Tracking control under complex coal seam with big inertia and big load and variable speed is studied. The reasonable and feasible control structure and tracking control strategy are proposed. The shearer electro-hydraulic proportional automatic height adjustment control theory is founded. Research production has the important theory significance and application value for the realization of shearer automatic height adjustment and fully mechanized mining face's automation & unmanned.

英文关键词： Sound signal;Electro-hydraulic proportional control;Automatic height adjustment;Coal-rock interface recognition;Shearer