ISHS Acta Horticulturae 559: V International Symposium on Protected Cultivation in Mild Winter Climates: Current Trends for Suistainable Technologies
CONTROL OF AN AIR CONDITIONING UNIT BASED ON A HEATING SYSTEM AND HUMID CORRUGATED PADS FOR A SUITABLE HUMIDITY IN A GROWTH CHAMBER: MODELLING AND SIMULATION |
| Authors: | R. Tawegoum, R. Teixeira, G. Chassériaux |
| Keywords: | weak inertia system, variable set points, optimal control |
| Abstract:
The design of an air conditioning unit for variable climate in grow chamber is presented in this study. The dynamic discrete model of the air conditioning unit, without the more typical compression or absorption-refrigeration cycle is defined. The control purpose is to follow greenhouse temperature and to replicate it with a desired and stable relative humidity in a ventilated growth chamber. A control law, based on quadratic criterium and dynamic programming, taking into account output error, energy consumption minimisation and perturbations is established. Simulation using greenhouse's data is presented. | |
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