基于PLC的模糊PID控制在線材水冷中的實現
戚志將
(無錫技師學院,江蘇 無錫 214153)
摘 要: 介紹了線材水冷在線控制的功能,分析了線材水冷卻過程中硬件和軟件的要求及實現方案,給出了穿水冷卻工藝控制系統的結構示意圖,并通過構建基于PLC S7-300 的自動控制系統實現了模糊PID 控制策略,仿真結果表明:采用模糊PID 控制減小了超調,有較好的抗干擾能力;利用PLC 具體化方案能方便地實現控制策略,優化水冷過程。
關鍵詞: 模糊PID;線材水冷;MATLAB 仿真;硬件組態
中圖分類號:TM571.6+1 文獻標識碼:A 文章編號:1007-3175(2014)11-0026-05
Implementation of Fuzzy PID Control in Wire Rod Water-Cooling Based on Programmable Logical Controller
QI Zhi-jiang
(Wuxi Institute of Technician, Wuxi 214153, China)
Abstract: Introduction was made to the online control functions of wire rod water-cooling. This paper analyzed the requirements of the hardware and software in the process of wire rod water-cooling and its implementing scheme and gave the system structure schematic of the pulling-on water-cooling technique control. Via constructing the automatic control system based on PLC S7-300, the system realized fuzzy PID control scheme. The simulation results show that adopting fuzzy PID control reduces overshoot with better anti-interference capacity. The concrete scheme of programmable logical controller is used to realize the control strategy to optimize the process of watercooling.
Key words: fuzzy PID; wire rod water-cooling; MATLAB simulation; hardware configuration
參考文獻
[1] 戚志將,繆曉龍,王勇,等.高線穿水冷卻系統溫度場的有限元分析[J].機械工程師,2011(12):83-85.
[2] 劉志壯,洪添勝,李震,等.基于模糊控制的流量控制閥仿真[J].農業工程學報,2009,25(2):83-86.
[3] 邊春元,宋崇輝.S7-300/400PLC梯形圖與語句表編程[M].北京:機械工業出版社,2009.
[4] 李建平,王曉沖,謝敬華. 基于PLC 的模糊參數自整定溫度控制系統研究[J]. 微計算機信息,2007,23(16):21-23.
[5] 陶權,謝彤.基于PLC的過程控制實驗裝置溫度模糊PID控制[J].自動化技術與應用,2010,29(10):22-26.