Method for controlling a lighting device for promoting the growth of a plant

A control method for controlling an artificial lighting device arranged to produce radiation intended to promote the development of a vegetable, said device comprising at least:

• one primary set of lighting units (U11) arranged to produce primary radiation (Rp) in a primary wavelength band;
• and
• at least one secondary set of lighting units (U21, U22) arranged to produce secondary radiation (Rs21, Rs22) in a secondary wavelength band, the radiation produced by the artificial lighting device resulting from the combination of primary radiation and secondary radiation;
• wherein the control method includes the following steps:
• obtaining (E2) an energy spectral distribution of the radiation produced by the artificial lighting device and received by the vegetable;
• determining (E6), on a wavelength band comprising at least the primary wavelength band and the secondary wavelength band, an energy spectral distribution of global radiation resulting from the combination of artificial lighting and natural lighting received by the vegetable;
• obtaining (E8) at least one target model of energy spectral distribution of the global radiation received by the vegetable;
• and
• determining (E1) at least one command (Cmd1, Cmd2, Cmd3, Cmd4) intended for the artificial lighting device as a function of the energy spectral distribution of the global radiation, the target model and the energy spectral distribution of the radiation produced by the artificial lighting device.