There are problems of that the roof fall accidents of full‐mechanized excavation head‐on roadway take place frequently and the tunneling efficiency is low ,supporting force of stepping‐type advanced supporting equipment is instability and may damage roof during the transition process .In order to meet the requirements of stability ,efficient and reliability for supporting the head‐on roof ,also to achieve the purpose of stepping‐type advanced supporting equipment in the transition process to form an effective support ,the electro‐hydraulic proportional control technol‐ogy was used and control scheme of supporting force of main and auxiliary cylinder groups was designed .Using spool displacement of the direction valve to control supporting force of cylinder groups ,according to the components and principles of the system ,the mathematical model and simulation model of control system was established .AMESim software was used for system sim‐ulation study ,the control curve about spool displacement of proportional valve and supporting force with time were obtained .Simulation results showed that different control effects on differ‐ent spool control curve were obviously different .The control curve based on volume increment was confirm to the requirements of the actual working conditions .In the meantime ,the design of control system was reasonable by comparing the simulation data and the experimental results .%针对综掘迎头及巷道冒顶事故频发、掘进效率低，迈步式超前支护装备在过渡过程中支撑力不稳定、破坏顶板等问题，为满足对迎头顶板支护平稳、高效、可靠的要求，达到超前支护在过渡过程形成有效支护的目的，采用电液比例控制技术，设计了主、副支撑油缸组支撑力的控制方案，利用换向阀阀芯位移控制支撑油缸组的支撑力。根据系统的组成和原理，建立控制系统的数学模型和仿真模型，利用AM ESim软件对系统进行仿真研究，得到比例换向阀阀芯位移、支撑力随时间的控制曲线。仿真结果表明，不同阀芯控制曲线对支撑力的控制效果有明显区别，基于体积增量的阀芯位移控制曲线符合实际工况要求。同时，将仿真数据与实验结果相比较，表明控制系统设计是合理的。
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