煤矿井下开采新的工作面之前,为了预防瓦斯突出,必须“先抽后采”。抽排系统的抽排泵在启动及运行过程中需及时调节排放流量,以保证出口瓦斯量在允许的范围内。本文介绍了一种以 FPGA 芯片为主控芯片,采用增量式 PID 算法的瓦斯浓度控制器,并给出了 FPGA 仿真,达到了预期的控制效果,解决了现有井下抽排系统中经常出现的瓦斯超限问题,提高了系统的控制精度、安全性及可靠性。 Before mining a new coal mine face, in order to prevent gas outburst, you must Pumping system exhaust pump in the start-up and operation of the timely adjustment of the discharge flow rate to ensure that the amount of gas exports in the allowable range. This paper introduces a kind of gas concentration controller with FPGA chip as the main control chip and incremental PID algorithm, and gives the FPGA simulation to achieve the expected control effect, which solves the problems of existing underground pumping system Gas overrun problems, improve the system’s control accuracy, safety and reliability.