电路老化试验箱恒温控制系统的设计

Design of constant temperature control system in circuit aging test chamber

针对电路老化试验箱温度控制精度较高的要求和温度控制系统的大时滞、非线性特性,设计出一种基于固态继电器和自整定PID算法的恒温控制系统。该设计方法采用固态继电器提高了系统的可靠性,采用自整定PID算法简化了控制器参数的设置,提高了控制系统的精度。设计给出了基于单片机应用下系统的软、硬件实现方法。

Aiming at the rigorous demand of control accuracy in circuit aging temperature control system and the characteristics of large-lag and nonlinear in temperature control system, a constant temperature control system based on solid state relay and self-adjusting PID arithmetic is designed. The design solution adopts the solid state relay to improve the reliability of system,adopts the self-adjusting PID arithmetic to predigest the parameters＇ setting of controller, and improves the accuracy of control system. The design provides implementing methods of software and hardware based on single-chip application.