Currently, small and medium sized robotic platforms operate at a characteristic bus voltage, typically over 30 VDC, which is not compatible with the large base of existing commercial and military ground vehicle platforms which are based on the 12/28-V nominal bus characteristic.This choice is principally due to the lack of common requirements between the two platforms given their perceived differences in applications, allowing the robotic platforms to choose dissimilar requirements towards their own individualized technical best practices. This makes it so that the two systems lack the ability to share energy in a meaningful way even in instances where the robot is physically docked onboard the vehicle platform. While DC-DC power conversion is an option to allow the two disparate platforms to connect with one another, the size and weight and power limitations of DC-DC conversion prevent high-rate sustained currents required for silent-watch and starting functions on the much larger military ground vehicle platforms. Also, the batteries currently available in the logistics system for small and medium sized robotic platforms is the BB-2590 battery, which is a Li-ion battery designed for communications applications. This battery is extremely limited on available power and requires packs composed of from between 4 to 12 BB-2590s to meet platform power and energy needs. The use of BB-2590s in packs also results in great disparity between the Li-ion batteries installed in a vehicle based on age, cycle life, remaining capacity, and resistance that decreases cycle life and degrades performance. These packs cannot be controlled and restricted to a single robotic vehicle over their whole life as they are batch charged external to the vehicle and not tracked by serial number to the specific platform they came from. Also, given the BB-2590 was not designed specifically for robotic applications, it is not necessarily optimum for a given platform.


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    Title :

    Robotic Technology Demonstration System (RTDS): The Jumpstart and Silent-Watch Robot


    Contributors:
    D. SKALNY (author) / J. ZWALLY (author) / T. VALASCHO (author) / R. SOSIN (author) / J. HARTNER (author) / D. MASLACH (author)

    Publication date :

    2021


    Size :

    16 pages


    Type of media :

    Report


    Type of material :

    No indication


    Language :

    English




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