湿焙回转炉控制系统设计及其关键技术研究
发布时间：2018-11-18 09:16
【摘要】：湿焙回转炉是利用电热效应供热的工业炉,是对散装粉末或浆状流体物料进行热处理的热加工设备,广泛应用于冶金、化工、建材等行业。基于SRK-0940电回转炉的工艺特点和传统温控系统存在的技术问题,在研究国内外先进控制系统方案的基础上,完成电回转炉自动控制系统的设计与开发,主要包括:系统的总体方案设计、控制系统软硬件开发、通信网络设计和温度控制算法研究。湿焙回转炉主要用于对催化剂物料进行电热加工过程,通过调节燃烧室温度和进料热处理过程,控制物料温度。温控过程主要由调节对象、温度检测装置、控制器调节和执行机构等构成负反馈闭环系统。结合物料电热处理的工艺特点和控制要求,设计了基于S7-200PLC的湿焙温控系统。上位机PC系统和主控器通过OPC技术进行数据传输,实现远程监控物料加热、炉温的设定、数据的运算以及温度的控制。同传统的手动控制方式相比较,湿焙电回转炉的工作更加高效、稳定和安全。针对含一阶积分环节,并带有不可测扰动的物料电加热过程,动态矩阵控制能优化温度的非线性和不确定性。在已辨识出的模型基础上,通过对动态矩阵控制(DMC)和传统PID控制的分析,提出了以动态矩阵为基础的DMC-PID串级预测控制方法。仿真结果表明,该串级控制方法能够实时反映温度的动态特性,其控制效果优于常规PID控制和DMC控制。
[Abstract]:Wet baking rotary converter is an industrial furnace which uses electrothermal effect to heat supply. It is a hot processing equipment for heat treatment of bulk powder or slurry material. It is widely used in metallurgy, chemical industry, building materials and other industries. Based on the technological characteristics of SRK-0940 electric rotary furnace and the technical problems existing in the traditional temperature control system, the design and development of the automatic control system for the electric rotary converter are completed on the basis of studying the advanced control system schemes at home and abroad. It mainly includes: the overall scheme design of the system, the software and hardware development of the control system, the design of communication network and the research of temperature control algorithm. The wet baking rotary converter is mainly used in the electrothermal processing of catalyst material. The temperature of the material is controlled by adjusting the temperature of combustion chamber and the heat treatment process of feed material. The temperature control process is mainly composed of the adjusting object, the temperature detecting device, the controller adjusting and the executing mechanism, etc. A wet baking temperature control system based on S7-200PLC was designed according to the process characteristics and control requirements of electrothermal treatment of materials. The upper computer PC system and master controller transmit data through OPC technology to realize remote monitoring and control of material heating, furnace temperature setting, data operation and temperature control. Compared with traditional manual control, wet baking electric rotary furnace is more efficient, stable and safe. The dynamic matrix control can optimize the nonlinearity and uncertainty of temperature for the electric heating process of materials with undetectable disturbance and first-order integral. Based on the identified model and the analysis of dynamic matrix control (DMC) and traditional PID control, a DMC-PID cascade predictive control method based on dynamic matrix is proposed. The simulation results show that the cascade control method can reflect the dynamic characteristics of temperature in real time, and its control effect is better than that of conventional PID control and DMC control.
【学位授予单位】：天津工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TP273;TK175
[Abstract]:Wet baking rotary converter is an industrial furnace which uses electrothermal effect to heat supply. It is a hot processing equipment for heat treatment of bulk powder or slurry material. It is widely used in metallurgy, chemical industry, building materials and other industries. Based on the technological characteristics of SRK-0940 electric rotary furnace and the technical problems existing in the traditional temperature control system, the design and development of the automatic control system for the electric rotary converter are completed on the basis of studying the advanced control system schemes at home and abroad. It mainly includes: the overall scheme design of the system, the software and hardware development of the control system, the design of communication network and the research of temperature control algorithm. The wet baking rotary converter is mainly used in the electrothermal processing of catalyst material. The temperature of the material is controlled by adjusting the temperature of combustion chamber and the heat treatment process of feed material. The temperature control process is mainly composed of the adjusting object, the temperature detecting device, the controller adjusting and the executing mechanism, etc. A wet baking temperature control system based on S7-200PLC was designed according to the process characteristics and control requirements of electrothermal treatment of materials. The upper computer PC system and master controller transmit data through OPC technology to realize remote monitoring and control of material heating, furnace temperature setting, data operation and temperature control. Compared with traditional manual control, wet baking electric rotary furnace is more efficient, stable and safe. The dynamic matrix control can optimize the nonlinearity and uncertainty of temperature for the electric heating process of materials with undetectable disturbance and first-order integral. Based on the identified model and the analysis of dynamic matrix control (DMC) and traditional PID control, a DMC-PID cascade predictive control method based on dynamic matrix is proposed. The simulation results show that the cascade control method can reflect the dynamic characteristics of temperature in real time, and its control effect is better than that of conventional PID control and DMC control.
【学位授予单位】：天津工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TP273;TK175
【参考文献】
相关期刊论文 前10条
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3 吕亚锋;郭利进;成立存;;基于动态矩阵控制的聚合釜温度控制与仿真[J];计算机仿真;2014年07期
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