Adaptive Control of Microclimate in Greenhouses

摘要

A solution of the problem of adaptive multiple input multiple output of air temperature, air humidity and carbon dioxide concentration for greenhouses is proposed in the paper. The controller synthesis is based on a parametrically uncertain model of the greenhouse microclimate represented by a system of nonlinear differential equations and on the method of controlling cascading systems. Controller parameters are adjusted online by identification algorithm with integral cost function and fast parametric convergence. Verification of the properties of the closed-loop system is accomplished with the use of Matlab/Simulink environment.