Adaptive fuzzy sliding mode control in PH neutralization process

摘要

In chemical industry process, PH neutralization process consists of a complex and multi-variable nonlinear coupling system. This paper combines the fuzzy control and sliding mode control, and fully using the system state information to simplify the fuzzy control rules. This paper gives the adaptive fuzzy sliding mode control algorithm as well as the stability-state analysis. The quantification scale factor changing adaptively adjusts the universe of fuzzy control system, makes system control signals soften and reduces the chattering of sliding mode control. Designed control system has strong robustness and good adaptive ability. Simulation results show that even a major change in operating point or suffer greater interference, the systems still have good anti-disturbance and strong robustness.