一种应用于温度控制系统的PID控制电路设计

A kind of PID control circuit applied to the temperature control system

在热分布式质量流量测试系统中,利用恒温差法测量流量,因此对温度控制系统的精确直接关系到流量测试的精确度。本文主要介绍了一种手动调试的PID控制方法,通过调节PID电路中参数来使得温差信号保持在一个稳定的值,文章中首先对PID控制电路的基本原理做了简单地介绍,设计出电路并且绘制PCB电路板,对电路板进行调试并且将其应用于实际热式质量流量测试系统中,实验证明该电路可以达到控制效果。

In the heat distributed mass lfow measurement system ,constant temperature difference method is used to measure lfow,so is precise in temperature control system is directly related to the accuracy of the lfow test.This paper mainly introduces a kind of manual debugging PID control method,by adjusting the PID parameters to make the difference in temperature signal circuit is kept in a stable value,the article ifrst done to the basic principle of PID control circuit is introduced simply,design circuit and draw PCB circuit boards,circuit board for debugging and applied to the actual thermal type mass lfow testing system,the experiment proved that the circuit can achieve the control effect.