摘要
针对目前的热处理电阻炉存在调节时间长、控制精度低的问题,提出了基于单片机的热处理炉温度控制系统的研究。该系统以K型热电偶耦合MAX6675作为温度采集单元,对温度进行采集并转换成电压信号,然后输入AVR单片机ATmega128进行分析处理;利用自适应PID算法计算实时温度与设定温度的偏差输出控制量,单片机根据控制量对SSR进行控制,从而实现对电阻炉温度的控制。仿真实验结果表明,所设计的温度控制系统能对电阻炉温度实现快速、准确的控制。
Aimed at the problem of long regulating time and low control precision in the current heat treating furnace,a heat treating furnace temperature control system based on MCU was proposed.The system takes K thermocouple coupling MAX6675 as temperature acquisition unit to collects and converts the temperature into voltage signal,then put the voltage signal into AVR microcontroller ATmega128 for analysis and processing;an adaptive PID algorithm was used to calculate the deviation of the real time temperature and the set temperature and then output the calculation results.According to the calculation results,the microcontroller control the SSR to realize the control of the temperature of resistance furnace.The simulation results show that the system can fastly and accurately control resistance furnace temperature.
出处
《铸造技术》
CAS
北大核心
2016年第10期2250-2253,共4页
Foundry Technology
基金
江苏省科技支撑计划项目(BE2013009-1)
