【摘要】 基于对目前典型掘进机截割头摆动液压控制系统的分析,提出了电液比例改进方案,对改进后的截割头摆动控制系统建立了时域数学模型和拉普拉斯变换域数学模型,为改进后的液压控制系统进行性能分析提供了理论依据,也为其它型号掘进机进行电液比例改进提供参考。更多还原

【Abstract】 Based on analysis of the current typical swing hydraulic control systems for a roadheader cutting-head,an electro-hydraulic proportional improvement scheme is proposed. The time-domain mathematical models and the Laplacian transform-domain mathematical- models of the improved cutting-head swing control system are built,which provides a theoreti- cal basis for pe,rformance analysis of the improved hydraulic system,and a reference for electro- hydraulic proportional improvement of other types of roadheaders.更多还原