Search

For the time-delay problem of temperature control in beer fermentation process, a fuzzy PID control system of beer fermentation temperature based on PLC was designed. Firstly, the temperature control system structure was designed through combination of fuzzy reasoning technology with the traditional PID control to adjust the PID parameters in real time, so as to adapt to the influence of time-varying factors on the control parameters in the process of beer fermentation. Then, the key process of temperature control was designed, and the control effect of the system was simulated and analyzed. The test results show that the maximum error between the actual control temperature and the set temperature of the system in the whole fermentation process is only 0.4 °C, and the overall control accuracy reaches more than 95%. The study can provide reference for precise control of beer fermentation temperature. [ABSTRACT FROM AUTHOR]