粉煤灰恒压输送PID控制系统研究  

Research of Constant Pressure Delivery PID Control System of Flying Ashes

作　　者：肖艳军[1] 孙英培[1] 孟宪乐[1] 李永聪[1] 

机构地区：[1]河北工业大学机械工程学院,天津300130

出　　处：《系统仿真学报》2015年第1期171-178,184,共9页Journal of System Simulation

摘　　要：对比目前国内粉煤灰恒流输送系统存在的弊端,介绍了恒压输送系统的优点以及输送原理。对其核心PID控制器进行了科学的建模,在此基础上引入了模糊控制算法,并对粉煤灰恒压输送模糊自适应PID控制器进行了设计与MATLAB仿真研究,该控制器可实现模糊控制和PID控制的自动切换,结果表明:模糊自适应PID控制在超调量、响应速度和调节时间方面均优越于常规PID控制,具有良好的静态特性、动态特性、智能性和鲁棒性。为后续粉煤灰恒压输送控制系统的工程实践提供了强有力的理论指导和依据,对自动化水平的进一步提高具有积极的意义。Comparing to the drawbacks of fly ash constant current conveying system, the advantages of constant pressure delivery system and its conveying theory were introduced. A scientific modeling of the key of PID controller was established. By introducing the fuzzy control algorithm, the fly ash constant pressure conveying fuzzy adaptive PID controller was designed, which could make the auto changes between the fuzzy control and PID controller come true, and the simulation with MATLAB was researched. The results show that fuzzy adaptive PID controller is superior to the conventional PID controller in overshoot, response speed and adjusting time. And fuzzy adaptive PID controller has advantages of static and dynamic performance, intellectuality and robustness. It provides a powerfully theoretical guidance and basis for engineering practice of the followed flying-ashes-system. It is positively significant to further enhance the level of automation.

关 键 词：粉煤灰 恒压输送 模糊控制 PID MATLAB 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]