Author(s): Xu Mingqiang Ying Shaoqing
Pages: 31-36
Year: 1993 Issue:  1
Journal: Journal of Xi'an Petroleum Institute（Natural Scien
Keyword:  fuzzy control; static decouplng; control system; three-phase separator subject;
Abstract: Crude oil is dehydrated by a three-phase separator(TPS). In technology, the pressure and the hight of interface between oil and water are required to keep a certain value. There exists coupling effect between the interface height and the pressure. Based on the fuzzy control theory and the operators experience, this paper designs a fuzzy decoupling controller for controlling the three-phase seperator. The application of fuzzy control is thus extended from single input-single output system to multi-input-multi-output system. Desirable results have been obtained by numerical simulation computation and practical adjustment. Compared with the conventional method of diagonal matrix decoupling, the present method is simple and convenient.