TEMPERATURE AND MASS FLOW CONTROL OF AN EDUCATIONAL AIR BLOWER

José Carlos Rodrigues de Oliveira¹; Yassin Lajnef²

¹ Universidade Federal de Minas Gerais - UFMG; ² ESIEE - École Supérieure d'Ingénieurs en Électronique et Électrotechnique - Paris, França

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Resumo

This paper describes an educational air blower, a reduced-scale process for teaching instrumentation and control as well as fluid dynamics. Constructed from a commercial hair-dryer, its automation is made by an Arduino microcontroller, with the aid of air temperature and speed sensors, mass flow being estimated by real-time software. Arduino performs the real-time tasks, while a human-machine interface is implemented on a Matlab console, in a personal microcomputer, this whole system permitting the students to control the blower in open-loop or closed-loop. Black-box identification and model validation are conducted for both temperature and mass flow. Experimental results complete the work.

Palavras-chave: Laboratory educational kit; Air blower; Temperature control; Mass flow control.