红薯粉丝压榨机设计之控制部分设计.doc

内容提要 本系统以AT89C51，AT89C2051单片机为核心，主要包括传感器温度采集，A/D模/数转换，按扭操作，单片机控制，数码管数字显示等部分。本系统采用PID算法实现温度控制功能，通过串行通信完成两片单片机信息的交互而实现温度设定、控制和显示。本设计还可以通过串口与上位机（电脑）连接，实现电脑控制。系统设计有体积小、交互性强等优点。为了实现高精度的控制，本单片机系统采用PID算法控制和PWM脉宽调制相结合的技术，通过控制双向可控硅改变电炉和电源的接通、断开，从而改变加热时间的方法来实现对的控制。本系统由键盘显示和温度控制两个模块组成，通过模块间的通信完成温度设定、实温显示、升降等功能。具有电路结构简单、程序简短、系统可靠性高、操作简便等特点。 关键词：AT89C51，AT89C2051单片机；温度控制；PID算法控制； Summary This system uses AT89C51, AT89C2051 single chip microcomputer as the core, mainly includes the sensor temperature acquisition, A/D, D/A conversion button operation, the single-chip microcomputer control, digital tube digital display and so on. This system uses PID algorithm to realize the temperature control function, two pieces of single chip microcomputer through the serial communication of information interaction and to realize the set temperature, control and display. This design can also be via a serial port connected to the PC (computer), to realize computer control. The system design has the advantages of small volume, strong interactivity. In order to realize high precision temperature control, the single chip microcomputer system adopts PID algorithm and PWM control pulse width modulation technology, the combination of bta and controlled by changing the electric furnace and power on and off, and transform the method of the temperature, heating time to achieve control of the water temperature. This system consists of the keyboard display and temperature control of two modules, through the communication between modules completed temperature setting, temperature display, temperature rise and fall, and other functions. Has some advantages such as simple circuit structure, process short, high reliability, easy operation, etc. Keywords: AT89C51, AT89C2051 single chip microcomputer； Temperature control； PID algorithm control；  目录 中文内容提要………………………………………………………………… I 英文内容提要……………………………………………………………… II 1 绪论………………………………………………………………………… 1 1.1课题背景………………………………………………………………… 1 1.2课题来源及意