针对滚筒式采煤机滚筒自动调高的要求,探讨并给出包括位移增益K的确定,滚筒、摇臂质量的转化以及液压系统建模的方法,建立控制对象数学模型,在仿真的基础上分析控制系统存在的问题,运用PID算法对其进行改进。 In view of the requirements of automatic drum height adjustment of drum shearer, the methods of determining the displacement gain K, transforming the drum and rocker mass, and modeling the hydraulic system are discussed. The mathematical model of the control object is established. Based on the simulation Analyze the existing problems in the control system and apply PID algorithm to improve it.