摘要
文中以单片机STC89C52为控制核心,单线数字温度传感器DS18B20构成前置信号采集电路,固体继电器SSR构成后向控制电路,根据分段控制的思想简化复杂的增量型数字PID算法,对加热系统的水温进行控制.目标温度可在30℃～80℃范围内任意设定,静态误差小于1℃.经过实验测试,系统运行稳定,控制效果良好.
The system takes the STC89C52 SCM as its controlling core. Its hardware mainly consists of two parts. The single digital temperature sensor DS18B20 constitutes a pre -signal acquisition circuit, while the back controlling circuit is mainly composed of the SSR solid - state relay. The system controls the temperature of the water with an arithmetic named Proportion - Integra - Derivative （PID）. The temperature can be discretionarily set in the work region, which is from 30℃ to 80℃. In our system the static error can be limited in 1 centigrade. Through experiment analysis, the system works stably and controls well.
出处
《实验科学与技术》
2014年第5期25-27,共3页
Experiment Science and Technology
