基于LADRC的反渗透海水淡化温控系统  

Temperature Control System for Reverse Osmosis Seawater Desalination Based on LADRC

作　　者：刘宏利[1] 刘世佳[1] 康权 俞永江 邵磊[1] 李季[1] 陈小奇[1] 

机构地区：[1]天津理工大学天津市复杂系统控制理论及应用重点实验室 [2]国家海洋局天津海水淡化与综合利用研究所

出　　处：《化工自动化及仪表》2017年第12期1106-1109,共4页Control and Instruments in Chemical Industry

基　　金：天津市科技计划项目(15ZXZNGX00140);天津市应用基础研究计划项目(16JCTPJC49400)

摘　　要：针对反渗透海水淡化系统中温度参数的非线性、时变、迟滞及存在扰动等特点,采用线性自抗扰(LADRC)控制器建立反渗透海水淡化温控系统。设计LADRC控制器可实现输入对输出的实时跟踪和实时补偿,并利用李雅普诺夫稳定性方法证明了该一阶LADRC中二阶线性扩张状态观测器LESO的稳定性问题。仿真结果表明:LADRC控制比PID控制响应速度更快,稳态精度更高,抗干扰能力更好,对整个系统稳定高效运行、降低系统能耗,有着重要的实用价值和研究意义。Considering nonlinearity, time-varying, hysteresis and disturbance of the temperature parameters in reverse osmosis desalination system, adopting the linear active disturbance rejection control （LADRC） to es- tablish a temperature control system for reverse osmosis searwater desalination was implemented, in which, having LADRC controller designed to realize real-time tracking and compensation of input to output, and the Lyapunov stability method adopted to prove stability of second order linear expansion state observer （LESO） in the first-order LADRC. The simulation results show that, the LADRC control outperforms the PID control in the response speed, steady-state precision and anti-interference abilities. It has practical value and signifi- cance in investigating the whole system＇s steady and efficient operation and reducing the energy consumption of the system.

关 键 词：反渗透 LADRC控制 LESO 温度控制 李雅普诺夫稳定性 

分 类 号：TH865[机械工程—仪器科学与技术]