简单有效的PID温控算法  

A Simple and Effective PID Controller for Temperature Adjustment

作　　者：胡传志[1] 沈建华 彭晓晶 

机构地区：[1]南通大学计算机科学与技术学院,江苏南通226019 [2]华东师范大学计算机科学与软件工程学院,上海200062 [3]恩智浦半导体上海有限公司,上海201203

出　　处：《实验室研究与探索》2017年第10期4-7,40,共5页Research and Exploration In Laboratory

基　　金：国家自然科学基金项目(41301514)

摘　　要：因为温度控制具有大时滞、大惯性的特点,以至于常规PID不能对其有效控制,所以一般需要采用具有参数自整定功能的自适应PID。不过,自适应PID的算法相对复杂,提高了使用与维护的难度,也增加了控制器成本。为此,设计并实现了一个简单有效的PID温控算法,该算法在常规PID算法的基础上做了两点改变,一是采用随温度变化趋势而变化的制动因子削弱大时滞的影响;二是采用随温度停滞时间而变化的积分速度因子调节积分速度,避免超调。该算法在一种旋转滴界面张力仪的温控系统中取得了不错的效果,为温控问题提供了简单有效的解决思路。Usually, adaptive PID is used to supersede conventional PID in temperature control system because of large time-delay and large inertia. However, adaptive PID with complex self-turning function brings the difficulty for user and increases the cost of microcontroller. For this reason, this paper presents a simple and effective PID controller. The controller utilizes the braking factor that complies with the temperature trend to weaken the impact of the time-delay, utilizes the integrated velocity factor that complies with the delay time to avoid overshooting. It was proved that the PID controller achieved good effect in the temperature control system of a spinning drop tensiometer. The PID controller provides a simple and effective snlution to control temperature.

关 键 词：温度控制 自适应PID 制动因子 积分速度因子 旋转滴界面张力仪 

分 类 号：TP273.5[自动化与计算机技术—检测技术与自动化装置]