基于单片机的温度控制系统的设计

Design of Temperature Control System Based on Single Chip Microcomputer

摘要:

针对单片机温度控制系统采用传统控制方法容易出现响应速度慢、振荡剧烈、控制精度低等问题,对单片机温度控制系统的硬件电路、控制精度、控制算法等方面进行了设计研究;基于以AT89C51单片机为核心运用DS18B20温度传感器的温度控制系统,提出了变论域模糊PID控制算法,将变论域模糊控制和PID控制相结合,结合生猪猪舍温度控制系统对传统PID控制算法以及变论域模糊PID控制进行对比分析;实验结果表明,设计的温度控制系统采用了变论域模糊PID控制算法,提高了控制精度,加快了系统的响应速度,从而增强了温度控制系统的实用性,产生了重要的实际工程意义。

Abstract:

Aiming at the problem of temperature control system based on single chip microcomputer. Traditional control method is prone to slow response, shaking violently and bad control effect.The hardware circuit,precision temperature control and control algorithms of control system get design and research. The control system base AT89C51 as core and apply DS18B20 sensor .The variable universe fuzzy PID control was introduced in the control system. The variable universe fuzzy control and PID control combine to form a variable universe fuzzy PID controller.Compared with the traditional PID and variable universe fuzzy PID in piggery.The experimental results indicated that the system uses variable universe fuzzy PID improves the control precision, accelerate the respond speed .Thereby enhancing the usefulness of temperature control system.It had important practical engineering significance. 