Examinando por Autor "AGUSTÍN ENRIQUE REYES REYES"
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- PublicaciónDISTRIBUTED SENSOR ACTUATOR NETWORK FOR ANTARCTIC PLANTS STUDIES(2019 IEEE CHILEAN CONFERENCE ON ELECTRICAL, ELECTRONICS ENGINEERING, INFORMATION AND COMMUNICATION TECHNOLOGIES (CHILECON), 2020)
;MAURICIO ALEJANDRO MONTANARES SEPÚLVEDA ;AGUSTÍN ENRIQUE REYES REYES ;ÁLVARO VICENTE PALMA MORA ;ANGEL ERNESTO RUBIO RODRIGUEZ ;KRZYSZTOF HERMANWASHINGTON ALFONSO FERNÁNDEZ RAVANALESARE THE ONLY NATIVE VASCULAR SPECIES OF PLANTS IN THE ANTARCTICREGION AND ARE A SOURCE OF INTEREST IN THE CLIMATE CHANGE STUDIES.THESE PLANTS HAVE BEEN STUDIED FOR DECADES AND RECOGNIZEDAS BIOINDICATORS OF THE CLIMATE CHANGE. THE ARTICLE PRESENTSPRELIMINARY STUDIES AND RESULTS OF A THERMAL ACTUATOR, WHICH ISGOING TO BE APPLIED IN A CLIMATE CHANGE STUDIES. THE ELABORATED,FAR INFRARED ACTUATOR TOGETHER WITH A CONTROL SYSTEM MAINTAINSTHE TEMPERATURE OF THE ANTARCTIC PLANT CERTAIN DELTA ABOVE THEAMBIENT TEMPERATURE. SINCE THE HEAT TRANSFER IS BASED ON INFRAREDRADIATION A THERMAL MODEL IS INTRODUCED, WHERE THE PARAMETERSOF THE MODEL ARE DETERMINED EMPIRICALLY APPROXIMATING IT USING A1-ST ORDER DYNAMICAL SYSTEM. ONCE DETERMINED, THE SYTEM MODELPAREMETERS HELP TO DESIGN THE CONTROL STRATEGIES: CONTROL ON-OFF(1) AND CONTROL PID (PROPORTIONAL?INTEGRAL?DERIVATIVE) (2). ASA RESULT WE OBTAIN THAT THE CONTROL PID MAINTAINS THE OBJECTSTEMPERATURE WITH MAJOR STABILITY THAN ON-OFF, WHAT MAKES ITPREFERABLE IN THE ?NAL APPLICATION. THE FUTURE WORKS INVOLVEMODELING AMBIENTAL PERTURBATION, WHICH AFFECTS THE SYSTEM ANDDETERMINATION THERMAL PARAMETERS OF THE ANTARCTIC PLANTS. - PublicaciónMPC-BASED TRACTION CONTROL FOR ELECTRIC VEHICLES(IEEE INTERNATIONAL CONFERENCE ON AUTOMÁTICA (ICA-ACCA), 2023)
;AGUSTÍN ENRIQUE REYES REYES ;ÁLVARO VICENTE PALMA MORAJAIME ADDIN ROHTEN CARRASCOTHE CAR TECHNOLOGY SHIFT TO POWERTRAIN ELECTRIFICATION GIVES PLENTY OF NEW WAYS TO IMPROVE SAFETY, ONE OF SUCH IS THE REGENERATIVE BRAKE SUSTAINED BY THE CAPABILITY OF THE INSTANT TORQUE THAT AN ELECTRIC MOTOR CAN PRODUCE. HOWEVER, TRACTION CONTROL IS SOMETHING THAT NEEDS TO BE DISCUSSED AND STUDY IN ORDER TO MAXIMIZE SAFETY, ACCELERATION, AND BRAKING FOR ELECTRIC VEHICLES. THIS PAPER EXAMINES AND SIMULATES A TORQUE CONTROL TECHNIQUE, ENSURING A SECURE AND SAFE ACCELERATION, AND BRAKING PROCEDURE TO AVOID SLIPPING. THIS IS ACHIEVED BY COMPUTING THE DYNAMICS OF A CAR WITH A QUARTER VEHICLE MODEL AND THE CHARACTERISTICS OF A TIRE. IN THIS WORK, A MODEL PREDICTIVE CONTROL (MPC) STRATEGY IS ADOPTED IN ORDER TO CONTROL THE TORQUE NEEDED TO FOLLOW A SLIP RATIO GIVEN AS REFERENCE. SIMULATION RESULTS SHOW A QUICK REACH OF THE MAXIMUM GRIP AVAILABLE, ENSURING A FAST AND SAFE BRAKING/ACCELERATION MANEUVER BY ENSURING THE REACH AND HOLD OF THE MAXIMUM FRICTION COEFFICIENT POINT OF THE TIRE MODEL..