Open AccessResearch on pH Value Control System of Haematococcus Pluvialis Algae Based on Fuzzy PID Algorithm
Author(s) -
Shigang Cui,
Xingzong Cai,
Yongli Zhang,
Xin Wu,
Liang He
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1631/1/012051
Subject(s) - haematococcus pluvialis , astaxanthin , pid controller , pluvialis , control theory (sociology) , computer science , control engineering , control (management) , engineering , biology , botany , artificial intelligence , temperature control , carotenoid
In recent years, inducing the production of astaxanthin by Haematococcus pluvialis, the application of extracting astaxanthin from it has become more and more widespread. The pH of the algae fluid has an important influence on the rate of accumulation of astaxanthin by Haematococcus pluvialis. However, the pH control system of Haematococcus pluvialis algae fluid has many shortcomings, such as non-linearity, time-varying, severe lag, large inertia and uncertain mathematical model. Therefore, to address these shortcomings, a method of pH control based on fuzzy PID is proposed. In the Matlab simulation software, using traditional PID control system adjust and control the pH value of Haematococcus pluvialis. And then using the fuzzy PID control system adjust and control the Haematococcus pluvialis. Finally, comparing the simulation results of the two systems. According to the Simulink results, we finally get the following conclusion: the fuzzy PID control system has smaller overshoot, no vibration, and the control effect is better.