热电偶检定炉炉温模型参考自适应控制的研究

热电偶校检定炉在对热偶进行高温点的校验时,炉温难于稳定,主要原因在于控高温时加热时间较长环境温度产生较大变化,从而造成检定炉加热模型产生时变,导致控制器效果明显变差,本文利用模型参考自适应控制方法在线调整PID控制器参数以适应环境温度变化而造成的加热炉模型时变,试验结果表明该方法适应性良好,从而为热电偶检定炉的温度控制提供了新的方法。

A research on model reference adaptive control method on temperature of thermocouple automatic verification furnace

Because of the considerable change of surrounding temperature caused by the relatively long time in heating ,it is rather difficult to stabilize the furnace temperature ,when verifying thermocouples in auto-verification furnace at high temperature ,in that case changes of the parameters of the furnace temperature mode occur, which results in worsened effects on the controller.In order to adapt the time changing of the furnace brought by the change of surrounding temperature , the PID controller parameter is adjusted on line by using of model reference self adaptive control method.It' s proved fine adaptively by experiments result ,thereby it afford a new method for temperature control of thermocouple automatic verification furnace