一种引入不完全微分PID控制算法在温控系统中的应用  

Application of an Incomplete Differential PID Control Algorithm in Temperature Control System

作　　者：姚立平 吴文明 姜杨阳 谭仲威 YAO Liping;WU Wenming;JIANG Yangyang

机构地区：[1]广东省科学院健康医学研究所,广东广州510500

出　　处：《科技创新与应用》2022年第19期8-12,17,共6页Technology Innovation and Application

基　　金：广东省科学院科技计划(2021GDASYL-20210103028)。

摘　　要：为改善温控系统的性能,设计一款由STM32、半导体制冷器TEC、H桥逻辑驱动电路、铂电阻Pt1000和MAX31865温度采集转换电路、液晶屏、声光指示电路、无线传输电路等构成的闭环温度控制系统;此外,针对PID控制算法中引入的微分信号会引进高频干扰,因此引入不完全微分的PID算法进行系统温度调节。实验结果表明,引入不完全微分的PID温控算法的温度控制效果要优于常规的位置式PID、改进积分PID、结合Bang-Bang控制的PID;具有系统响应速度快、超调量小、误差小、鲁棒性等特点,在工程温度控制方面具有一定的实用价值和应用价值。In order to improve the performance of the temperature control system,a closed-loop temperature control system is designed,which is composed of STM32,semiconductor cooler TEC,H-bridge logic drive circuit,platinum resistance Pt1000 and MAX31865 temperature acquisition and conversion circuit,LCD screen,acousto-optic indication circuit and wireless transmission circuit.In addition,high-frequency interference will be introduced to the differential signal introduced in the PID control algorithm,so the incomplete differential PID algorithm is introduced to adjust the system temperature.The experimental results show that the temperature control effect of PID temperature control algorithm with incomplete differentiation is better than that of conventional positional PID,improved integral PID and PID;based on Bang-Bang control,which has the characteristics of fast system response,small overshoot,small error and robustness,and has certain practical value and application value in engineering temperature control.

关 键 词：温控系统 半导体制冷器TEC 系统响应 PID控制算法 

分 类 号：TF325.64[冶金工程—冶金机械及自动化]