Intelligent temperature control method for disc koji making based on PID (Proportion Integration Differentiation) algorithm

Abstract

The invention discloses a disc koji-making temperature control method based on an intelligent PID algorithm. The method comprises the steps of setting an air temperature correction process: step 1, obtaining an actual temperature value of a fermentation material; 2, subtracting the set material temperature at the moment from the obtained actual temperature value to obtain a material temperature deviation value; 3, the set air temperature is corrected according to the material temperature deviation value, and the target air temperature is obtained; and finally, PID control is conducted on the air temperature according to the deviation between the feedback air temperature and the target air temperature, and the air temperature drives the material temperature to change according to a set curve. The deviation of the temperature control result is obtained by calculating the difference value between the actual material temperature and the set material temperature, and then the set air temperature is corrected according to the deviation, so that the correlation between the set air temperature and the actual material temperature is improved, the set air temperature can be adjusted in real time according to the actual material temperature, intelligent control over the set air temperature is achieved, and the service life of the air conditioner is prolonged. And the control precision of the material temperature is improved when the material temperature is controlled through the air temperature.

Description

technical field [0001] The invention belongs to the technical field of microbial fermentation, and in particular relates to an intelligent temperature control method for disc koji making based on a PID algorithm. Background technique [0002] With the development of the times, the traditional artificial fermentation in the fermentation tank has been gradually replaced, and the fully automated technology of disc koji fermentation has gradually emerged. The temperature control system is the core of the disc koji fermentation technology. In order to improve the stability of temperature control, the disc temperature control system generally uses the PID algorithm to control the temperature, and adjusts the parameters of the algorithm through the touch screen of the system. [0003] PID (Proportion Integration Differentiation) refers to proportional (P), integral (I), and differential (D) control. PID control is based on the deviation between the given value r(t) and the actual o...

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Problems solved by technology

And sending in a large amount of air also means bringing in a large amount of bacteria, which further affects the early growth of the koji.

Furthermore, if the opening of the fresh air door is too large, the moisture will be lost too quickly, and the humidifier 9 cannot completely compensate for the moisture loss inside the material, which will have a negative impact on the growth of the bent material.

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