Jose del C. Julio-Rodríguez

Jose del C. Julio-Rodríguez


Research Focus & Metrics

Academic Career Length

6Years (2021-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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31 May 2022 in Applied Sciences
Verified
Journal Article
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JJJose del C. Julio-Rodríguez
Jose del C. Julio-Rodríguez
Carlos A. Rojas-RuizCarlos A. Rojas-Ruiz
Carlos A. Rojas-Ruiz
Alfredo Santana-Díaz.Alfredo Santana-Díaz.
Alfredo Santana-Díaz.
RBRogelio Bustamante-Bello
Rogelio Bustamante-Bello
Ricardo A. Ramirez-MendozaRicardo A. Ramirez-Mendoza
Ricardo A. Ramirez-Mendoza
This work presents the development of a classification method that can contribute to precise and increased awareness of the situational context of vehicles, for it to be used in autonomous driving applications. This work aims to obtain a method for machine-learning-based driving environment classification that does not involve computer vision but instead makes use of dynamics variables from Inertial-Measurement-Unit (IMU) sensors and instantaneous energy consumption measurements. This article includes details about the data acquisition, the electric vehicle used for the experiments, and the pre-processing methods employed. This explores the viability of a method for classifying a vehicle’s driving environment. The results of such a system can potentially be used to provide precise information for path planning, energy optimization, or safety purposes. Information about the driving context could be also used to decide if the conditions are safe for autonomous driving or if human intervention is recommended or required. In this work, the feature selection process and statistical data pre-processing methods are evaluated. The pre-processed data are used to compare 13 different classification algorithms and then the best three are selected for further testing and data dimensionality reduction. Two approaches for feature selection based on feature importance and final classification scores are tested, achieving a classification mean accuracy of 93 percent with a real testing dataset that included three driving scenarios and eight different drivers. The obtained results and high classification accuracy represent a first approach for the further development of such classification systems and the potential for direct implementation into autonomous driving technology.

20 May 2021 in Applied Sciences
Verified
Journal Article
Open access
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JJJose del C. Julio-Rodríguez
Jose del C. Julio-Rodríguez
Alfredo Santana-Díaz.Alfredo Santana-Díaz.
Alfredo Santana-Díaz.
Ricardo A. Ramirez-MendozaRicardo A. Ramirez-Mendoza
Ricardo A. Ramirez-Mendoza
In-wheel motor technology has reduced the number of components required in a vehicle’s power train system, but it has also led to several additional technological challenges. According to kinematic laws, during the turning maneuvers of a vehicle, the tires must turn at adequate rotational speeds to provide an instantaneous center of rotation. An Electronic Differential System (EDS) controlling these speeds is necessary to ensure speeds on the rear axle wheels, always guaranteeing a tractive effort to move the vehicle with the least possible energy. In this work, we present an EDS developed, implemented, and tested in a virtual environment using MATLAB™, with the proposed developments then implemented in a test car. Exhaustive experimental testing demonstrated that the proposed EDS design significantly improves the test vehicle’s longitudinal dynamics and energy consumption. This paper’s main contribution consists of designing an EDS for an in-wheel motor electric vehicle (IWMEV), with motors directly connected to the rear axle. The design demonstrated effective energy management, with savings of up to 21.4% over a vehicle without EDS, while at the same time improving longitudinal dynamic performance.

Verified
Journal Article
Open access
PDF file
JJJose del C. Julio-Rodríguez
Jose del C. Julio-Rodríguez
PGPedro S. Gonzalez-Rodriguez
Pedro S. Gonzalez-Rodriguez
SSSTEFANIA MATILDE AMAYA SANDOVAL
STEFANIA MATILDE AMAYA SANDOVAL
DPDavid Puma
David Puma
MQMilton Israel Quinga-Morales
Milton Israel Quinga-Morales
ELEdilberto Antonio Llanes-Cedeño
Edilberto Antonio Llanes-Cedeño
This study presents a novel methodology for optimizing energy management strategies in heavy-duty Fuel Cell Hybrid Electric Vehicles (FCHEVs) with pantograph charging systems. The approach integrates machine learning (ML) techniques to predict energy demand, optimize the power distribution between the battery and fuel cell, and enhance overall efficiency. The methodology involves clustering vehicle and road data, supervised ML classification, and zonification of routes for adaptive energy management. The proposed system was validated using real-world driving data from five different routes in Germany. The results indicate a significant improvement in hydrogen consumption and fuel cell degradation compared to conventional control strategies. This research establishes a framework for advanced energy management in heavy-duty hydrogen-powered electric vehicles.