三容水箱液位的预测函数控制算法研究  

Research of Predictive Function Control Algorithm in Three-tank Water Level Control

作　　者：纪振平[1] 张扬[1] 张晓杰[1] 

机构地区：[1]沈阳理工大学信息科学与工程学院,辽宁沈阳110159

出　　处：《沈阳理工大学学报》2015年第3期1-4,共4页Journal of Shenyang Ligong University

基　　金：国家自然科学基金资助项目(61273178)

摘　　要：三容水箱液位控制是典型的非线性、大滞后的对象,针对常规的PID控制响应时间长、超调大等问题,采用基于预测函数控制(PFC)的串级控制系统对三容水箱液位进行控制。根据实际测得三容水箱液位数据建立预测模型,并以预测函数控制作为主控制器建立三容水箱液位控制系统。仿真结果表明,基于预测函数控制的系统动态品质优于常规的PID控制算法,具有较强的鲁棒性和抗干扰能力。Three-tank level control is typical nonlinear and long-delay object. For conven- tional PID control with long response time and large overshoot,predictive functional control （PFC） cascade control strategy is adopted for the three-tank water level control. According to the actual measured three-tank water level data, the predictive model is established. The PFC is taken as the main controller in three tank level control system. The simulation results show that the dynamic performance of control system based on PFC is superior to conven- tional PID control algorithm which has strong robustness and anti-interference ability.

关 键 词：三容水箱 液位 预测函数控制 PID控制 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]