关键词:

"> 间歇过程；非线性；自适应鲁棒控制；中药；析出

Abstract: The model of sugar precipitation of traditional Chinese medicine is established, and the crystal size distribution is not considered. Based on Lyapunov’s theory, an adaptive robust control for uncertain nonlinear system is proposed. The algorithm is based on “model decomposition” that adaptive controller eliminates the parameter uncertainties, robust controller eliminates the unknown dynamics and disturbance and feedback controller dominates the nominal object. These three controllers constitute a complete controller for the uncertain nonlinear system. The stability of the system is proved and the output of the system can well track the expectation. The algorithm is applied to the control of sugar precipitation in traditional Chinese medicine solution, and the simulation results verify the validity of the proposed algorithm.

Key words:

Batch process, nonlinearity, adaptive robust control, traditional Chinese medicine; precipitation