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一种引入滤波的PID控制算法在温控系统的应用

Application of Electronic Technique(2022)

Cited 1|Views11
Abstract
为了使得温控系统响应更加稳定,在PID控制算法中引入了三阶离散滤波器对输入信号进行滤波,去除了抖动噪声,输出更为平稳的响应结果;此外,设计了一种基于STM32微控制器为控制核心的温度调控系统,由铂电阻Pt1000和MAX31865构成温度采集模块,由半导体制冷器TEC和H桥逻辑器构成温度调节模块,上位机软件与下位机系统使用USB串口通信,将接收的实时的温度数据进行引入滤波的PID调节,将调节输出值发送给下位机软件实现一次闭环的温度调节控制.实验结果表明,引入滤波器的PID控温度制方法要优于结合Bang-Bang的PID、引入微分先行PID、步进式PID、变积分PID,提高了抗干扰的能力,在工程温度控制方面具有一定的实用价值和应用价值.
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