針對(duì) pH 控制具有不確定性的大滯后的油田污水處理系統(tǒng)，基于傳統(tǒng)的Smith 預(yù)估器結(jié)構(gòu)，提出 一種改進(jìn)方案。在Smith 預(yù)測(cè)控制的基礎(chǔ)上引入了模糊自整定方案，仿真和試驗(yàn)結(jié)果表明，新的控制方案 不僅具有滿意的控制性能，而且具有較強(qiáng)魯棒性和抗干擾性能，對(duì)時(shí)變大滯后對(duì)象具有良好的控制效果。
[關(guān)鍵詞]：污水處理；pH控制；模糊控制；Smith預(yù)測(cè)控制
Abstract： An improved Smith-predictor based on the structure of traditional Smith-Predictor for the oil field waste water treatment pH control system with uncertainly and long dead time is presented. The scheme of fuzzy self-adjust based on the smith predict control is introduced. The simulation and experiment results show that this design is feasible and can provide higher characteristics to the controlled objects with time-varying parameters and long dead time.
Key words: Waste water treatment；pH control；Fuzzy control；Smith predict control