Sensor modelling for heat exchanger control
DOI:
https://doi.org/10.17979/ja-cea.2026.47.13860Keywords:
Sensors and actuators, Software for system identification, Continuous time system estimation, Identification for control, Experiment design, Linear systems, Process modelling and identificationAbstract
This work presents the experimental modelling of the dynamic behaviour of a thermistor temperature sensor using an Arduino UNO R3 microcontroller as part of the thermal control and monitoring system of a heat exchanger. The sensor's transfer function is identified through experimental tests using two signal conditioning configurations: a voltage divider and a Wheatstone bridge. During the tests, controlled temperature variations are applied, and the sensor's response is recorded to determine its gain and time constant. The resulting model is used in the design of feedback and feedforward controllers for a marine heat exchanger, whose dynamic model, including the actuator and inlet valve, is also presented. The experimental results of the sensor identification and the simulation results of the designed control system are presented.
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Copyright (c) 2026 Yago Granados-Gomes, Josep M. Torrents, Rosa M. Fernández-Cantí
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