Firstly, the indoor temperature germination period dynamic model of fist-order linear method is given in this paper. The simulation verifications show that it is with good results and can be used for the greenhouse optimal control. Secondly, by analysis of this model, with internal model principle and optimal control theory, a control scheme based on suboptimal disturbance rejection state feedback of germination period is proposed. This scheme can eliminate steady-state error caused by the output disturbances of system, achieving the goal to implement optimal control with no static error disturbance.
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