Release Time:2019-03-09  Hits:

Indexed by: Journal Article

Date of Publication: 2014-02-01

Journal: WORLD JOURNAL OF MICROBIOLOGY & BIOTECHNOLOGY

Included Journals: Scopus、EI、SCIE

Volume: 30

Issue: 2

Page Number: 767-775

ISSN: 0959-3993

Key Words: Continuous cultures; Nonlinear system; Robust control; mu-Synthesis

Abstract: In this paper, robust control problem using mu-synthesis in microbial continuous culture is studied. The dissimilation process of glycerol to 1,3-propanediol cannot avoid the disturbances caused by uncertain factors. Based on the biodynamical model, a control system with the initial glycerol concentration as input control is proposed to simplify the controller design. mu-synthesis method is applied to find a feedback controller to assure both of robust stability and robust performance of the closed-loop system simultaneously. To solve the corresponding structured singular value optimization problem, a converged result is obtained through D-K iteration method. The mu-synthesis system is also compared with the corresponding system. The simulation results indicate that the mu-controller might be more feasible for the continuous bioprocess controlling.