【摘要】 针对炼钢工序中定氧加铝系统的工艺及控制要求,基于西门子S7-300 PLC,MM440变频器和现场总线技术设计了定氧加铝自动控制系统,PLC和MM440之间采用PROFIBUS DP现场总线技术进行通讯。运行结果表明,该自动控制系统运行稳定,具有良好的准确性、快速性和即时性等。更多还原

【Abstract】 Aimed at the technical and control requirement in steel-making,an automatic fixed-oxygen aluminum addition control system is designed based on SIMATIC S7-300PLC and MM440 inverter.The communication between PLC and MM440 is realized by PROFIBUS-DP.It is found that the automatic control system operates stably with good accuracy,rapidity and timeliness.更多还原