自动控制原理课程设计案例探索与实践——基于PID算法的温湿度控制器设计

Case Study and Practice of Automation Control Principle Course Design—Design of a PID-Based Temperature and Humidity Controller

摘要: 传统自动控制原理课程设计中，Matlab仿真虽操作简便，但因模型过于理想化，难以提升学生工程实践能力。为此，本研究开发了基于STC90C516RD+单片机的温湿度实时调控系统，集成PID控制技术，实现数据采集、显示与调控。测试显示最大湿度误差3.6% RH，温度误差1.2℃，控制效果良好。该系统融合微控制器、传感器及控制理论，有效解决了理论教学与工程实践的脱节问题。

Abstract: In traditional automatic control principle course designs, Matlab simulation, while simple to operate, often fails to enhance students’ engineering practice capabilities due to its overly idealized models. To address this, this study developed a real-time temperature and humidity control system based on the STC90C516RD+ microcontroller, integrating PID control technology to achieve data acquisition, display, and regulation. Tests showed a maximum humidity error of 3.6% RH and a maximum temperature error of 1.2˚C, indicating satisfactory control performance. This platform combines microcontroller applications, sensor technology, and control theory, effectively bridging the disconnect between theoretical teaching and engineering practice in conventional automatic control courses.