Affiliations: [a] Department of Electrical Engineering, I-Shou University, Kaohsiung, Taiwan
| [b] Electronic Information and Engineering Institute, Fuqing Branch of Fujian Normal University, China
| [c] Key Laboratory of Nondestructive Testing, Fuqing Branch of Fujian Normal University, China
| [d]
Fujian Provincial Key Laboratory of Information Processing and Intelligent Control (Minjiang University), Fuzhou, China
Correspondence:
[*]
Corresponding author. Fuquan Zhang, Fujian Provincial Key Laboratory of Information Processing and Intelligent Control (Minjiang University), Fuzhou, China. Tel.: 18950429435; E-mail: 8528750@qq.com.
Abstract: Because of high efficiency and cleanness, the simulated moving bed (SMB) is the most important technology in chromatographic separation. SMB system, which contains several sectors of flow rate, the switching time of valves and many other possible influencing variables, is complex, highly sensitive and difficult to control. This paper proposes adjusted fuzzy control; the adjusted fuzzy controller is applied to the SMB system to control the separation concentration by establishing a variable direction correction formula. Compared with the traditional fuzzy controller, the adjusted fuzzy controller does not need to analyze the dynamic direction of the control force in advance, moreover, the control accuracy is high and the fluctuation is small for SMB system.
