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.
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)。
关键词
温控系统
半导体制冷器TEC
系统响应
PID控制算法
temperature control system
semiconductor cooler TEC
system response
PID control algorithm
