Sugar precipitation control of Chinese medicine solution based on adaptive robust

Author

Qingwei Li ; Hongjun Duan

Author_Institution

Sch. of Resources & Mater., Northeastern Univ. at Qinhuangdao, Qinhuangdao, China

fYear

2014

fDate

26-28 April 2014

Firstpage

45

Lastpage

48

Abstract

A model for Chinese medicine sugar precipitation is designed, without considering crystal size distribution. Adaptive robust control algorithm is presented for the uncertain nonlinear system based on Lyapunov´s stability theory. The kernel idea is model decomposition: adaptive control algorithm is designed for attenuating the parameter uncertainties; robust control algorithm is designed for eliminating the disturbance and unknown dynamics; feedback control algorithm is designed for dominating the nominal plant. The stability is proven and the output of system tracks the set point very well. The algorithm is applied to the sugar precipitation control of Chinese medicine solution. Simulation result upheld the significance of the proposed algorithm.

Keywords

Lyapunov methods; adaptive control; control system synthesis; nonlinear control systems; pharmaceutical industry; pharmaceuticals; precipitation (physical chemistry); robust control; sugar; uncertain systems; Chinese medicine solution; Lyapunov stability theory; adaptive robust control algorithm; control algorithm design; crystal size distribution; disturbance elimination; model decomposition; nominal plant; parameter uncertainties; sugar precipitation control; uncertain nonlinear system; Adaptation models; Algorithm design and analysis; Crystals; Heuristic algorithms; Process control; Robust control; Sugar; Chinese medicine; adaptive robust control; batch process; nonlinearity; precipitation;

fLanguage

English

Publisher

ieee

Conference_Titel

Information Science and Technology (ICIST), 2014 4th IEEE International Conference on

Conference_Location

Shenzhen

Type

conf

DOI

10.1109/ICIST.2014.6920328

Filename

6920328