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    Optimization of Power Control for Autonomous Hybrid Electric Vehicles With Flexible Power Demand1

    Source: Journal of Autonomous Vehicles and Systems:;2024:;volume( 005 ):;issue: 002::page 21002-1
    Author:
    Kargar, Mohammadali
    ,
    Song, Xingyong
    DOI: 10.1115/1.4066477
    Publisher: The American Society of Mechanical Engineers (ASME)
    Abstract: Technology advancement for on-road vehicles has gained significant momentum in the past decades, particularly in the field of vehicle automation and powertrain electrification. The optimization of powertrain controls for autonomous vehicles typically involves a separated consideration of the vehicle’s external dynamics and powertrain dynamics, with one key aspect often overlooked. This aspect, known as flexible power demand, recognizes that the powertrain control system does not necessarily have to precisely match the power requested by the vehicle motion controller at all times. Leveraging this feature can lead to control designs achieving improved fuel economy by adding an extra degrees-of-freedom to the powertrain control while maintaining safety and drive comfort. The present research investigates the use of an approximate dynamic programming (ADP) approach to develop a powertrain controller, which takes into account the flexibility in power demand within the ADP framework. The concept of reachable sets is incorporated into the ADP framework to ensure safety, improve ride comfort, and enhance the accuracy of the optimization solution. The formulation is based on an autonomous hybrid electric vehicle, while the methodology can also be applied to other types of vehicles. It is also found that necessary customization of the ADP algorithm is needed for this particular control problem to prevent convergence issues. Finally, a case study is presented to evaluate the effectiveness of flexible power demand, as addressed by the ADP method. The experiment demonstrates a 14.1% improvement in fuel economy compared to a scenario without flexible power demand.
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      Optimization of Power Control for Autonomous Hybrid Electric Vehicles With Flexible Power Demand1

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    contributor authorKargar, Mohammadali
    contributor authorSong, Xingyong
    date accessioned2025-04-21T10:24:32Z
    date available2025-04-21T10:24:32Z
    date copyright11/19/2024 12:00:00 AM
    date issued2024
    identifier issn2690-702X
    identifier otherjavs_5_2_021002.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4306128
    description abstractTechnology advancement for on-road vehicles has gained significant momentum in the past decades, particularly in the field of vehicle automation and powertrain electrification. The optimization of powertrain controls for autonomous vehicles typically involves a separated consideration of the vehicle’s external dynamics and powertrain dynamics, with one key aspect often overlooked. This aspect, known as flexible power demand, recognizes that the powertrain control system does not necessarily have to precisely match the power requested by the vehicle motion controller at all times. Leveraging this feature can lead to control designs achieving improved fuel economy by adding an extra degrees-of-freedom to the powertrain control while maintaining safety and drive comfort. The present research investigates the use of an approximate dynamic programming (ADP) approach to develop a powertrain controller, which takes into account the flexibility in power demand within the ADP framework. The concept of reachable sets is incorporated into the ADP framework to ensure safety, improve ride comfort, and enhance the accuracy of the optimization solution. The formulation is based on an autonomous hybrid electric vehicle, while the methodology can also be applied to other types of vehicles. It is also found that necessary customization of the ADP algorithm is needed for this particular control problem to prevent convergence issues. Finally, a case study is presented to evaluate the effectiveness of flexible power demand, as addressed by the ADP method. The experiment demonstrates a 14.1% improvement in fuel economy compared to a scenario without flexible power demand.
    publisherThe American Society of Mechanical Engineers (ASME)
    titleOptimization of Power Control for Autonomous Hybrid Electric Vehicles With Flexible Power Demand1
    typeJournal Paper
    journal volume5
    journal issue2
    journal titleJournal of Autonomous Vehicles and Systems
    identifier doi10.1115/1.4066477
    journal fristpage21002-1
    journal lastpage21002-10
    page10
    treeJournal of Autonomous Vehicles and Systems:;2024:;volume( 005 ):;issue: 002
    contenttypeFulltext
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