文章摘要
张华伟,吕宝占.一种用于双输入双输出液位控制系统的状态估计控制器的设计[J].机床与液压,2022,50(12):100-105.
ZHANG Huawei,LYU Baozhan.Design of a State Estimation Controller for Double Input and Double Output Liquid Level Control System [J].Machine Tool & Hydraulics,2022,50(12):100-105
一种用于双输入双输出液位控制系统的状态估计控制器的设计
Design of a State Estimation Controller for Double Input and Double Output Liquid Level Control System
  
DOI:10.3969/j.issn.1001-3881.2022.12.019
中文关键词: 双输入双输出液位控制系统  线性扩张状态观测器  状态估计控制器  液位控制  状态空间方程
英文关键词: Double input and double output liquid level control system  Linear extended state observer  State estimation controller  Liquid level control  State space equation
基金项目:广东省教育厅科研平台和项目(2018GkQNCX083);韶关市科技计划项目(2019sn103)
作者单位E-mail
张华伟 广东松山职业技术学院机械工程学院 ZhanghuaweiYJR8@126.com 
吕宝占 河南理工大学机械与动力工程学院  
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中文摘要:
      设计一种用于双输入双输出液位控制系统的状态估计控制器。从双输入双输出液位控制系统的结构出发,研究其结构及工作原理。在考虑系统集中扰动的基础上,利用系统的已知增益时滞比求取系统的状态空间方程。采用线性扩张状态观测器,构造系统的估计方程,并通过期望信号与输出信号误差的比值,构建状态估计控制器。通过所设计的状态估计控制器,求取双输入双输出液位系统中两个通道的估计方程以及控制信号。利用干扰观测器方法与所提方法分别对恒定及变化期望液位曲线进行跟踪。结果表明:在跟踪恒定及变化液位曲线时,所提方法对双输入双输出液位系统的控制效果较好,能够控制系统液位快速按照期望液位变化,可实现对双输入双输出液位的准确控制。
英文摘要:
      A state estimation controller for double input and double output liquid level control system was designed. The structure and working principle of the double input and double output liquid level control system were studied. On the basis of considering the centralized disturbance of the system, the state space equation of the system was obtained by using the known gain delay ratio of the system. The linear extended state observer was used to construct the estimation equation of the system, and the state estimation controller was constructed by using the proportional value of the error between the expected signal and the output signal. Through the designed state estimation controller, the estimation equations and control signals of the two channels in the dual input and dual output liquid level system were obtained. The disturbance observer method was introduced into the experiment to track the constant and changing desired liquid level curves. The results show that when tracking the constant and changing liquid level curve, by using the proposed method, the double input and double output liquid level control system can be controlled better, the system liquid level can be controlld to change rapidly according to the expected liquid level, and the accurate control of the double input and double output liquid level control can be realized.
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