In order to study the physical and chemical reaction after CO2 injected into coal beds at different condition.The physical and chemistry reaction among CO2,H2O
帆板控制系统采用ATMEGA128作为系统的主控芯片,用高精度角度传感器WDD35D4实时检测帆板偏转角度,送到AT MEG A 128集成的10位A/D进行转换,经数字平均滤波算法处理,最后通过数字PID算法调节PWM占空比,控制L298输出功率来调节风扇的风速大小,在5秒内使帆板的实际偏转角度与给定角度一致。并用LCD1602液晶和上位机实时显示设定角度、测量的角度、PWM占空比和电机转速。
Taking the city of Qitaihe is as an example in order to provide practical methods for the selection of leading industries for coal resource cities, this paper e