Research on decoupling greenhouse temperature and humidity based on feedback linearization

Abstract

In order to improve the control effect of each environmental factor of conventinal glasshouse, a realistic nonlinear glasshouse system feedback linearization decoupling control arithmetic has been reported. The multi-input, multi-output system which is nonlinear is turned into two detached single-input, single-transport stepwise linear systems by implementing the encoder algorithm, and the relation of the ambient components, which is strong coupling, such as the temperature and humidity, is alleviated. The simulation results show that if the target value of the environmental factor is within a proper controllable range, the controlled system of greenhouse temperature and humidity can achieve a good following effect, eliminate the coupling between temperature and humidity, and improve the accuracy of temperature and humidity control, which can effectively reduce energy consumption and improve the comprehensive benefit of greenhouse production. Precision of temperature and humidity control, which can effectively reduce energy consumption and improve the comprehensive benefits of greenhouse production