摘要
为了实现低压舱舱内压力、升降速率、新风量的精确控制和连续作业的自动控制,系统采用西门子S7-200PLC作为控制器核心,应用PID算法来自动调节真空泵频率、阀门开度等,并通过改变真空泵的变频调速,实现模拟控制舱内压力随海拔升降速度和高度变化的目的。通过研究表明,该控制系统控制准确可靠,有较好的节能效果,降低了操作人员的劳动强度和整个系统的噪声并提高了整个系统的安全性。
In order to achieve accurate control of the pressure of hypobaric chamber,changing rate and the fresh air,as well as the autocontrol of continuous operation,using the Siemens S7- 200 PLC as the key controller and PID algorithm,the automatic adjustment of the frequency of vacuum pump and valve opening is realized. Furthermore,the frequency control is changed in order to achieve the purpose that the pressure changes with the actual altitude＇s lifting speed and height in the analog control cabin. The study shows that the control system has high control precision and good liability,which can save energy,reduce labor intensity and the noise of the whole system,and enhances security.
出处
《现代机械》
2016年第1期69-72,共4页
Modern Machinery
