Since the parameters of model for electric heater vary with the temperature, the control effect of traditional PID controller is not perfect when the temperature varies.
由于电加热器模型参数具有随温度而变化的时变特性，当温度大范围变化时，采用常规PID控制器控制效果不理想。
This article derives a general model of heater for thermal dynamic system. Based on the general model, the thermal parameters of regenerating system can be calculated by Circulating Function Method.
文章在建立了热力系统加热器的通用性数学模型的基础上，用循环函数法对整个回热系统进行热力计算。
The boiler super-heater steam temperature control object is generally with characteristic of parameters slow time variable, the great inertia and the larger time lag.
锅炉过热器蒸汽温度受控对象通常具有大惯性、大迟延、参数慢时变等特点。
This paper presents a method for regulating PID parameters on line automatically with fuzzy algorithm to realize controlling water high precision constant temperature of gas water heater.
本文提出一种采用模糊算法在线自动整定PID参数的方法，实现了燃气热水器水温的高精度恒温控制。
This paper presents a method for regulating PID parameters on line automatically with fuzzy algorithm to realize controlling water high precision constant temperature of gas water heater.
本文提出一种采用模糊算法在线自动整定PID参数的方法，实现了燃气热水器水温的高精度恒温控制。
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