Abstract: Artificial valve regulation method is always being the dominating flow control method in coal mine freezing shaft sinking system，thus there obviously exists a lot of problems，such as backward technology，large energy consumption，poor stability etc.To improve the level of automatic control and energy-saving level，variable frequency control is used to regulate the brine flow of freezing shaft sinking instead of valve control and realizes intelligent frequency conversion control in sinking with the use of advanced fuzzy adaptive PID control algorithm to replace conventional PID algorithm.This plan not only can improve the stability and accuracy of control system but also can greatly minimize energy consumption，saving the cost of drilling.Experimental and simulation results show that the fuzzy PID algorithm has advantages like smaller overshoots，strong dynamic adaptability and better robustness than traditional PID and expert PID algorithm.It also shows that the intelligent frequency conversion control system based on fuzzy PID has higher control efficiency and energy conservation level than traditional valve control system.

Key words: energy consumption, fuzzy adaptive PID, intelligent frequency conversion control, control efficiency, energy conservation level

摘要： 煤矿冻结法凿井流量控制一直采用人工阀门调节，技术落后、能耗大、稳定性差等问题日益凸显，为此提出利用变频控制取代阀门控制来调节冻结凿井盐水流量，利用先进的模糊自适应PID控制算法取代常规PID算法实现凿井智能变频控制，不仅有效地提高了变频控制的稳定性、准确性而且能极大程度地降低凿井能耗、节约凿井成本。实验和仿真结果表明，模糊PID变频控制比传统PID和专家PID超调量更小、动态适应性更强、鲁棒性更好;基于模糊PID的智能变频控制系统比传统阀门控制系统具有更高的控制效率和节能水平。

关键词: 能耗, 模糊自适应PID, 智能变频控制, 控制效率, 节能水平