本文介绍用TP—801单板机控制可控硅的控温系统。通常采用PID算式进行控制,需要整定积分、微分、比例系数,使调试、操作很不方便,而本系统采用简化的扩充临界比例度法,在控制过程中只整定比例系数一个参数。另外采用数字触发,使系统成本降低,同时提高了系统的工作可靠性。本系统具有控制精度较高,升温和降温的线性度好,操作十分方便等优点。 This article describes the use of TP-801 single board control SCR temperature control system. The PID formula is usually used for control, and it is necessary to set integral, differential, and proportional coefficients to make debugging and operation inconvenient. However, this system adopts a simplified extended critical proportionality method and only one parameter of the proportional coefficient is set in the control process. In addition, digital triggering is used to reduce the system cost and improve the system’s operational reliability. The system has the advantages of high control precision, good linearity in heating and cooling, and convenient operation.