Controle de temperatura do protótipo de um silo de grãos por meio da técnica de faixa dividida com ajuste CHR

Abstract

Year after year, agriculture in Brazil has surpassed its own records for grain production, and this productivity has made the country one of the world’s largest food exporters since the 1970s. Despite the enormous production and the successive record increases in harvests, the sector has not invested in grain storage and stockpiling at the necessary rate. On farms where there are suitable silos for storage, there is still a lot of manual labor, which can lead to accidents and product deterioration due to moisture accumulation and lack of temperature control. This study focuses on the construction of a pilot plant as a prototype of a grain storage silo and its modeling, and the design, simulation, analysis and implementation of a control system in order to control the temperature of its interior so that it is possible to conjecture how the qualities of agricultural products within storage units would be ensured. The research focuses on analyzing the performance achieved by the controller in controlling the temperature of the prototype. In summary, the aim is to develop split-range PID controllers that can make real-time adjustments to the temperature loop, using feedback from data collected by a specific temperature sensor. In this way, the system developed was successful in automated temperature control in smallscale silos, with the potential for application in real environments through scalability. The research contributes to studies on storage techniques, in line with the challenges facing Brazilian agribusiness.