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International Journal of Sustainable Transportation Technology

Keyword: Digital twin

original research article

Development of Digital Twin Platform for Electric Vehicle Battery System

Putu Handre Kertha Utama, Irsyad Nashirul Haq, Edi Leksono, Muhammad Iqbal Juristian, Ghulam Azka Alim, Justin Pradipta

Pages 7-11

The battery system in electric vehicles needs proper monitoring and control to ensure reliable, efficient, and safe operation. Recent advancement in cyber-physical technology has brought the emerging digital twin concept. This concept opens a new possibility of real-time condition monitoring and fault diagnosis of the battery system. Although it sounds promising, the concept implementation still faces many challenges. One of the challenges is the availability of a platform to develop digital twins, which involves data pipelines and modeling tools. The data pipeline will include the acquisition, storing, and extract-transform-load (ETL) with high velocity, volume, value, variety, and veracity data, known as big data. The modeling tools must provide applications to build the high-fidelity model, one of the required elements of the digital twin. Based on those urgencies, this paper proposes a platform that facilitates a digital twinning of the battery system in an electric vehicle. The platform is built on the open-source framework CDAP, equipped with a data pipeline and modeling tools. It has run several performance tests with different computation resource configurations and workloads. Doubling the processing power can reduce 12% of computation time while increasing memory size by four times only reduces 10% of computation time. The result shows that the processing power affects the performance digital twin platform more than the memory size.
original research article

Digital Twin Model Development for Autonomous Tram Localization

Yolanda Tania Mulyadi, M Rifqi Rafian Putra, Yul Yunazwin Nazaruddin, Miranti Indar Mandasari

Pages 55-60

The rapid advancement of information technologies led to the rapid growth of various aspects, one of which is autonomous vehicles. Digital twin technology is being frequently developed in autonomous vehicle research, enabling real-time remote monitoring and control of the vehicle’s physical assets. This technology can reduce maintenance costs and risks as well as prevent and speed up accident management. This paper proposes a digital twin model for the autonomous tram, one of the vehicles widely explored due to its safety, low emissions, and high capacity. In this research, the proposed digital twin model is utilized to virtually represent the kinematics of the tram prototype in a 2D model from data sent via Message Queuing Telemetry Transport (MQTT) protocol, enabling real- time remote control with low-band consumption. Virtual representation of the tram prototype is gathered via physical sensors and Long Short-Term Memory (LSTM) as the virtual model and controlled by a Stanley controller. The results confirmed that the use of the proposed digital twin model could remotely monitor and control the autonomous tram prototype in real-time conditions.