ISHS Acta Horticulturae 406: II IFAC/ISHS Workshop :Mathematical & Control Applications in Agriculture & Horticulture
ADAPTIVE CONTROL OF FLORAL DEVELOPMENT |
| Authors: | L.E.G. Nilsson, T.G. Nybrant |
| Keywords: | Adaptive Control, Floral Development, Greenhouse, Production Control |
| Abstract:
The main objective of the presented work was to develop a computer-based algorithm for the control of pot plant flower development. Such an algorithm adjusts the greenhouse climate (the temperature) in order to control the flower development of the plants so that anthesis (flowering) takes place at a predetermined date. The control algorithm was based on a model of flowering in Cineraria (Senecio X hybridus (HyL.) 'Moll stam'). Since the flowering characteristics varies between different batches of flowers, an adaptive control algorithm was developed which estimates model parameters on-line, during control, and adjusts the controller tuning to maintain accurate control. The developed algorithm was tested in a number of experiments which showed that it is possible to accurately control the floral development so that anthesis takes place at the predetermined date, even when the characteristics of the crop are not initially entirely known. | |
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