摘要
为改善管网叠压供水系统的供水质量,采用自抗扰控制器对其进行控制.根据管网叠压供水系统的简化数学模型设计自抗扰控制器,利用Simulink建立整个系统和控制器的仿真模型.控制器以水泵的扬程作为输入,利用扩张状态观测器观测出系统状态变量以及外界扰动,通过配置非线性结构,并由前馈环节进行扰动补偿,最终得到控制变量.将自抗扰控制器从动态性能、适应性和抗干扰性3个方面与常规PID控制器进行比较分析.仿真结果表明自抗扰控制器不仅可以提高管网叠压供水系统的动态性能,而且增强了系统的抗干扰能力,使其具有更好的鲁棒性.
The active disturbance rejection controller（ADRC）is proposed to improve the water supply quality of the network pressure-superposed water supply system.The ADRC is designed according to the system simplified math-ematic model.The simulation model of the whole system is built.Taking the pump head as the input signal,ADRC controller can estimate the unmeasured system state parameters and the real action of the unknown disturbances by extended-state observer for dynamic compensation part.A nonlinear proportional derivative combination in the feed-back path is used to track the error and synthesize the control variable.In this paper,ADRC is compared with PID controller from three aspects that are adaptability,dynamic performance and noise immunity.Simulation results show that ADRC not only improves the system’s dynamic performance,but also enhances its robustness and adaptability.
出处
《天津大学学报》
EI
CAS
CSCD
北大核心
2011年第5期406-411,共6页
Journal of Tianjin University(Science and Technology)
基金
天津市科技支撑计划重点资助项目(08ZCKFGX08000)
关键词
管网叠压供水系统
数学模型
自抗扰控制
系统仿真
network pressure-superposed water supply system
mathematic model
active disturbance rejection con-trol
network simulation
