基于前馈补偿的稀土耐热合金加热炉温度PI控制方法  

Temperature PI Control Method of Rare Earth Heat Resistant Alloy Heating Furnace Based on Feedforward Compensation

作　　者：杨清宇 YANG Qingyu(Guangdong Fuyuan Rare Earth Co.Ltd.,Pingyuan 514600,China)

机构地区：[1]广东省富远稀土有限公司,广东平远514600

出　　处：《工业加热》2023年第8期45-49,共5页Industrial Heating

基　　金：江西省教育厅自然科学基金(GJJ171498);江西省质量技术监督局项目(GZJK201701);赣州市科技局创新人计划项目(2018-179)。

摘　　要：稀土耐热合金加热炉在运行一段后,存在控制器难以切换回原有温度控制策略的问题,因此提出基于前馈补偿的稀土耐热合金加热炉温度PI控制方法。建立加热炉样本数据集,结合数据预处理方法去除样本数据中的各项误差,获取完整样本数据。分析加热炉燃烧的具体状态,制定加热炉温度控制方案。根据制定的温度控制方案选取合适的参考轨迹,利用免疫PID控制理论完成加热炉控制器的设计。通过前馈补偿方法对控制器误差实施前馈误差补偿,实现控制器温度控制策略切换的优化。将获取的完整样本数据输入到温度控制器中,通过控制器输出的控制策略实现稀土耐热合金加热炉温度的实时控制。实验结果表明,所提出的控制方法能够有效提升加热炉的加热速度,并且能够减少燃料的消耗。After a period of operation,it is difficult for the controller to switch back to the original temperature control strategy.Therefore,a temperature PI control method based on feedforward compensation is proposed for the rare earth heat-resistant alloy furnace.Establish the sam-ple data set of the heating furnace,remove various errors in the sample data with the data preprocessing method,and obtain complete sample data.Analyze the specific combustion state of the heating furnace,and formulate the temperature control scheme of the heating fur-nace.According to the temperature control scheme,select the appropriate reference trajectory,and use the immune PID control theory to com-plete the design of the heater controller.The feedforward compensation method is used to implement feedforward error compensation for the con-troller error and optimize the switching of the controller temperature control strategy.Input the complete sample data to the temperature control-ler,and realize the real-time control of the temperature of the rare earth heat-resistant alloy heating furnace through the control strategy output by the controller.The experimental results show that the proposed control method can effectively improve the heating speed of the furnace and reduce fuel consumption.

关 键 词：前馈补偿 稀土耐热合金 加热炉 加热温度PI控制 温度控制器 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]