在分析采煤机滚筒的截割状态对采煤机运行参数影响的基础上,提出了以采煤机运行参数（截割部电动机功率、牵引部电动机电流和调高油缸压力）为检测对象,应用模糊控制技术进行煤岩界面识别和滚筒自动调高的方法。并设计了以PLC为核心的多参数递阶混合模糊控制器。进行了模拟试验。试验表明,这种模糊控制器数据库方便修改,对输入量的变化反应灵敏,响应速度快,判断准确,实时性好,适用于煤和顶底板岩石硬度不相同,的采煤工作面的煤岩分界面辨识和采煤机滚筒自动调高的控制。%Based on the analysis of the working state of shearer drum, this paper put forward a method to identify the boundary between coal and rock using fuzzy control technology, and designed a multi--parameter hierarchical fuzzycontroller based on PLC. The experiment shows that the database in this fuzzy controller is easy to modify, and the controller has high sensitivity, fast response, and good real--time to the input, so the controller is suitable to identify the boundary and adjust the height of shearer drum.
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