摘要
介绍了一种基于DSP的高精度温度控制系统的设计。该系统采用DSP TMS320LF2407A为微处理器,利用DSP内部集成的模数转换器采集温度数据,并经过PID算法处理控制PWM输出,该输出进行功率放大后控制半导体制冷器,从而使受控对象在要求的时间内达到设定的参考温度。着重阐述了系统的结构、工作原理、软硬件的设计,对系统设计的特点进行了详细的说明,并给出了系统控温曲线。实验结果表明:该系统具有稳定性强、温度调节速度快的特点,控温精度达到±0.1℃,很好地满足了系统实际测试要求。
Introduced a design of high-precision temperature controll system based on DSP. The system adopted DSP TMS320LF2407A as microprocessor. The DSP interior integrated ADC is used to sample the temperature data that control the output of PWM after PID algorithm processed. Then amplify the power of the output to control the thermoelectric cooler that can make the controlled object achieve the set reference temperature in demanded time. Strongly emphasized the structure and principle of the system and the design of software and hardware. It elaborated on the specialty of the system design and also gave the temperature controlled curve. The experimental result shows that this system has strong stability and high temperature adjusting speed, and its precision of controlled temperature is able to achieve 0.1 ℃. All of these characteristics have well satisfied the practical requirement.
出处
《仪表技术与传感器》
CSCD
北大核心
2007年第6期69-71,共3页
Instrument Technique and Sensor
