摘要
高精度的等速升温系统是获得精确自燃点的关键。针对等速升温系统大惯性、纯滞后、非线性、难以建立精确的数学模型等特点,结合系统在不同升温阶段的散热特征,提出基于专家经验的智能PID控制算法,实现了系统的精确等速升温。在此基础上,还给出了专家PID控制器的设计以及控制系统设计。实验结果表明采用该控制算法取得的控制效果明显优于常规PID,减小了系统误差,提高了自燃点系统测试精度。
Precision constant heating system was the key to obtaining accurate ignition point.Constant heating systems has feature of large inertia,pure hysteresis,nonlinearity,and it was difficult to establish a precise mathematical model characteristics.To improve the control performance,an expert PID controller was proposed combined system's thermal characteristics. Based on this,the designs of expert-PID controller and control system design were presented. Experi- mental results show that the effect of expert PID control was obviously better than that of conventional PID control. The systematic error was reduced ,accuracy was improved.
出处
《自动化与仪表》
北大核心
2013年第12期24-27,共4页
Automation & Instrumentation
关键词
专家PID
等速升温
自燃点
散热补偿
AVR单片机
expert PID
constant temperature
autogenous ignition point
thermal compensation
AVR single chip microcomputer