Relation entre débit massique et couple dentraînement dun disque de distributeur dengrais : modélisation et confrontations expérimentales

Abstract : The aim of this work is to show that the driving torque of the spreading disc on a centrifugal broadcaster can be used as a fertiliser mass flow estimator. This flow estimation depends on physical properties of fertiliser and motion parameters on the spinning disc. Our study deals with the characterisation and the simulation of the resisting torque exerted by the fertiliser on the vanes. Several parameters are taken into account : location of the feeding point, speed of rotation, fertiliser features, disc shape, length and pitch angle of the vanes. Our model is validated by comparing calculated and measured values. Used on centrifugal spreaders, this mass flow estimation method can replace hopper weighing devices with some technical advantages (lower sensibility to accelerations, mass flow control on each spinning disc,...). As part of precision farming and site specific fertilisation, the use of the previous method allows efficient real-time servo control system for the management of the fertiliser flow.
Document type :
Journal articles
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https://hal.inrae.fr/hal-02582988
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Submitted on : Thursday, May 14, 2020 - 10:04:29 PM
Last modification on : Monday, June 27, 2022 - 11:32:57 AM

Identifiers

• HAL Id : hal-02582988, version 1
• IRSTEA : PUB00013864

Citation

Sylvain Villette, E. Piron, Frédéric Cointault, P. Sarrazin. Relation entre débit massique et couple dentraînement dun disque de distributeur dengrais : modélisation et confrontations expérimentales. Ingénieries eau-agriculture-territoires, Lavoisier ; IRSTEA ; CEMAGREF, 2003, pp.73-84. ⟨hal-02582988⟩

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