Study on Decoupling Control System of Temperature and pH Concentration in Photoreactive Biological Apparatus

The photobioreactor system has the dynamic characteristics of non-linearity and large time delay, and the temperature and pH concentration of algae liquid have strong coupling characteristics. In this paper, taking the photobioreactor as the research object, a decoupling control system for algae liquid temperature and pH concentration is designed by combining neural network and decoupling technology. The simulation of the system based on MATLAB shows that the decoupling controller not only eliminates the interaction between temperature and pH regulation channel, but also has better control performance index.