Design of Temperature Control System Based on STM32 and Tuned PID Algorithm

The design of this paper is to solve the problems of poor stability and low control accuracy of traditional temperature control system in industry, agriculture and even daily life. This paper is a design of temperature control system based on STM32 microcontroller and self-tuning PID (proportional-integral-differential) algorithm. The system mainly includes temperature acquisition module, mode adjustment module, display module and temperature control module. The temperature acquisition module uses a temperature sensor to monitor the ambient temperature in real time, which is converted into a digital signal by ADC and fed back to the main control chip. The temperature control module processes the temperature signal through the PID algorithm designed by the target set value and the actual ambient temperature, calculates the control quantity according to the set target temperature, and outputs it to the execution module through the PWM signal, so as to realize the precise control of the heater and the temperature control. The results show that the temperature control system based on STM32 and tuning PID algorithm can quickly respond to temperature changes, has high control accuracy and stability, can maintain the target temperature under different environmental conditions, and is suitable for various application scenarios that need accurate temperature control.