基于pid算法的水温控制器的设计论文

《基于pid算法的水温控制器的设计论文》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、基于PID算法的水温控制器的设计摘要：PID控制是工控领域内的一种重要控制方法，将PID算法应用到以51单片机为核心的控制系统中，能产生良好的控制效果。基于PID算法的水温控制系统采用目前性价比较高的数字温度传感器DS18B20作为检测变送器，通过键盘向单片机输入设置温度，单片机将温度偏差进行PID运算后，输出PWM波。PWM波作为执行机构（固态继电器）的输入从而来决定电炉工作电压的大小,最终实现水温的控制。整个系统的电路结构简单，可靠性能高。经实验测试，该系统无震荡现象，响应时间短，稳态误差小，基本实现稳、准、快的指标。关键词：PID；51单片机；温度传感器；PWMD

2、esignofWaterTemperatureControllerBasedonPIDAlgorithmAbstract:ThePIDcontrollerisanimportantmethodintheengineeringpractice.ItcanproducegoodcontroleffectwhenthePIDalgorithmisappliedto51single-chipmicrocomputerasthecoreofthecontrolsystem.ThetemperaturecontrolsystembasedonPIDalgorithmusethecu

3、rrenthighcostofdigitaltemperaturesensorwhichisnamedasDS18B20asthedetection,wecansetthetemperatureofthewaterbyusingthekey.Thesingle-chipmicrocomputerwilloutputPWMsquarewaveafterdealingwiththedeviations.ItcancontrolthetemperatureofthewaterbyusingthePWMsquarewaveastheinputterminaloftheagenc

4、y(solid-staterelay).Thewholesystemissimpleanddependable.Theexperimentalstudiesindicatethatcontroldevicecanmeettheengineeringrequirement.Keywords:PID；51single-chipmicrocomputer；temperaturesensor；PWMsquarewave目录序言····································································1第1章系统方案·

5、························································21.1设计思想··························································21.2方案论证··························································21.3论证分析··························································2第2章系统设计··························

6、·······························42.1硬件设计··························································42.1.1电源电路····················································4第60页共60页2.1.2温度检测与变送环节··········································52.1.3单片机最小系统···············································62.1

7、.4键盘电路····················································102.1.5显示电路····················································112.1.6加热驱动模块···············································122.1.7报警电路····················································132.2软件设计···················