多模模糊控制在碱回收系统中的应用  

Application of Multi-Mode Fuzzy Control in Alkali Recovery System

作　　者：王树东[1,2,3] 李子广 王焕宇 高翔 徐子衿 WANG Shu-dong LI Zi-guang WANG Huan-yu GAO Xiang XU Zi-jin(College of Electrical and Information Engineering, Lanzhou University of Technology, Lanzhou 730050, China Key Laboratory of Gansu Advanced Control for Industrial Processes, Lanzhou University of Technology, Lanzhou 730050, China National Experimental Teaching Center of Electrical and Control Engineering, Lanzhou University of Technology, Lanzhou 730050, China Gansu Army Reserve Duty Division Headquarters Automatic Station, Lanzhou 730050, China)

机构地区：[1]兰州理工大学电气工程与信息工程学院,甘肃兰州730050 [2]兰州理工大学甘肃省工业过程先进控制重点实验室,甘肃兰州730050 [3]兰州理工大学国家级电气与控制工程实验教学中心,甘肃兰州730050 [4]甘肃陆军预备役高射炮兵师司令部自动化站,甘肃兰州730050

出　　处：《测控技术》2017年第9期76-79,85,共5页Measurement & Control Technology

摘　　要：根据造纸厂碱回收蒸发工段的工艺流程和控制要求,针对蒸发工段黑液的液位具有迟滞时间长、非线性、难以控制的特点,为了更高效地实现对黑液的处理,以达到标准排放的目的,提出基于模糊切换的多模控制算法。这种控制算法既有传统PID控制算法的优点也具有模糊控制算法的优点。在控制系统中引入模糊切换方法,使整个系统的控制精度和稳定性得到提高。经过调试运行,结果证明,该控制方案有良好的控制效果,能有效地稳定造纸厂黑液液位,减少蒸汽消耗,为造纸厂碱回收利用的高效化提供了良好的基础。According to the technological process and control requirements of papermaking factory alkali recov- ery and evaporation section, in order to overcome the shortcomings of the black liquor such as long time delay, nonlinear, difficult to control, and to realize the treatment of black liquor more efficiently up to standard emis- sions, a multi-mode control algorithm based on fuzzy switching is proposed. This control algorithm has both ad- vantages of traditional PID control algorithm and fuzzy control algorithm. The fuzzy switching method is intro- duced in the control system to improve the control precision and stability of the whole system. After debugging operation, the results show that the control scheme has a good control effect, which can effectively stabilize the liquid level of black liquor in the paper mill, and reduce the consumption of steam. It lays a good foundation for the effective utilization of alkali recovery in paper mills.

关 键 词：模糊控制 PID控制 多模控制 模糊切换 PLC 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]