模拟PID电路参数自整定温控系统设计  

Design of analog PID circuit system with parameter auto-tuning

作　　者：刘云芳[1,2] 张晓[1,2] 李建伟[1] 

机构地区：[1]中国科学院上海技术物理研究所,上海200083 [2]中国科学院大学,北京100049

出　　处：《低温工程》2013年第2期68-72,共5页Cryogenics

摘　　要：针对模拟PID电路的控制理论和机理,从简单、易用、直观的参数整定原则和切实改善系统控制性能的参数自整定的目的,设计了由电流源搭建的铂电阻测温电路、MSP430主控电路、含数字电位器的模拟PID电路、串口通讯和上位机软件构成的模拟PID电路参数自整定温控系统。试验表明,自整定系统工作正常,整定后的温控系统在测温精度为0.03℃的情况下能获得0.1℃的温度稳定度。Based on analog PID control theory, an analog PID circuit with auto-tuning parameter of temperature controlled system was designed on purpose of simple, easy to use, intuitive parameters setting principles and effectively improving the performance of auto-tuning system. The analog PID circuit consisted of temperature measure circuit with constant flow source, main control with MSP430, analog PID circuit with digital potentiometer, serial communication and PC software interface. Experiments with the analog PID circuit show that the auto-tuning system works well, the temperature control system can get a 0.1 ℃ temper- ature stability degree in measurement precision of 0.03 ℃ after auto-tuning parameters.

关 键 词：模拟PID电路 数字电位器 参数自整定 

分 类 号：TB663[一般工业技术—制冷工程]