International Journal of Educational Innovation and Science, 2025, 6(1); doi: 10.38007/IJEIS.2025.060111.
Kewei Hou, Boyu Pang, Yingdao Li, Yibo Xu, Chenkai Zhang, Weiling Cai, Qinxi Lin
Ningbo Tech University, Ningbo, China
In order to solve the problems of large volume and Bang-Bang control of temperature control system in process control experimental teaching, a temperature control scheme based on analog quantity was proposed. The temperature system uses STM32 as the controller, DS18B20 collects the temperature, uses the positional PID algorithm to calculate the duty cycle of the PWM, converts the PWM into analog output to the solid-state voltage regulator through the PWM to voltage module, realizes the continuous control of the heating rod by changing the input voltage of the heating rod, and finally draws the temperature curve through MATLAB and analyzes the control effect. This scheme effectively solves the problems of large volume of process control instruments and large steady-state error of Bang-Bang control. Experiments show that when the system reaches stability, the steady-state error is less than 0.6%, which has a good control effect.
Analog, temperature control system, PID, DS18B20
Kewei Hou, Boyu Pang, Yingdao Li, Yibo Xu, Chenkai Zhang, Weiling Cai, Qinxi Lin. Analog-Based Temperature Control System. International Journal of Educational Innovation and Science (2025), Vol. 6, Issue 1: 83-89. https://doi.org/10.38007/IJEIS.2025.060111.
[1] Bao Xuhong. Application of positional PID control algorithm in urban rail ATO system[J].Journal of Changsha University of Science and Technology(Natural Science Edition),2017,14(3):84-89.
[2] Yu Yao, Wang Xianquan, Zhu Guilin, Zhang Hongguang, Lei Yitan. Design of PID temperature control system based on BP neural network self-tuning[J].Electronic Devices,2015,38(6):1360-1363.
[3] Qiang Minghui, Ma Wenxue, Ma Yongwei. Application of improved Bang-Bang control algorithm in temperature control based on S7-200[J].Automation & Instrumentation,2013(6):97-99.
[4] Sun Sitong, Li Shuo. Design of temperature control system for water heating mattress based on positional PID[J].Electronic Design Engineering,2024,32(15):66-6975.
[5] Fu Huiqi. Application of analog input module in temperature control of refrigeration system[J].Shanghai Electric Technology,2017,10(2):17-1923.