A temperature control method for an agricultural production greenhouse

Abstract

The present application belongs to the technical field of intelligent control, and particularly relates to a temperature control method for agricultural production greenhouse. The method collects the actual temperature of the greenhouse, combines the preset target temperature of the crop growth stage and the deviation threshold value; an improved PID controller is constructed, adaptive nonlinear proportional gain, variable integral strategy, differential noise suppression and trend prediction mechanism are adopted to improve the control adaptability and anti-interference ability; the improved cow swarm optimization algorithm is used to optimize the controller parameters with dynamic grouping, adaptive step and mutation mechanism to quickly lock the optimal combination; finally, the real-time adaptive adjustment of the greenhouse temperature is realized, and the control result is ensured to be stable within the preset deviation threshold value. The present application solves the problems of fixed parameters, lagging adjustment and large steady-state error of the existing method, and improves the precision, reliability and fine level of temperature control in the agricultural production greenhouse.

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