Title :
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
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;
Conference_Titel :
Information Science and Technology (ICIST), 2014 4th IEEE International Conference on
Conference_Location :
Shenzhen
DOI :
10.1109/ICIST.2014.6920328
