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NeRTA : Enabling Dynamic Software Updates in Mobile Robotics
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- El Yaacoub, Ahmed, 1996- (author)
- Uppsala universitet,Datorarkitektur och datorkommunikation,Avdelningen för datorteknik
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- Mottola, Luca, 1980- (author)
- Uppsala universitet,Datorarkitektur och datorkommunikation,Avdelningen för datorteknik,Politecnico di Milano, Italy
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- Voigt, Thiemo (author)
- Uppsala universitet,Datorarkitektur och datorkommunikation,Avdelningen för datorteknik
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- (creator_code:org_t)
- 2022
- 2022
- English.
- Conference paper (peer-reviewed)
Abstract
Subject headings
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- We present NeRTA (Next Release Time Analysis), a technique to schedule dynamic software updates of the low-level control loops of mobile robots. Dynamic software updates enable software correction and evolution during system operation. In mobile robotics, they are crucial to resolve software defects without interrupting system operation or to enable on-the-fly extensions. Low-level control loops of mobile robots, however, are time sensitive and run on resource-constrained hardware with no operating system support. To minimize the impact of the update process, NeRTA safely schedules updates during times when the computing unit would otherwise be idle. It does so by utilizing information from the existing scheduling algorithm without impacting its operation. As such, NeRTA works orthogonal to the existing scheduler, retaining the existing platform-specific optimizations and fine-tuning, and may simply operate as a plug-in component. Our experimental evaluation shows that NeRTA estimates are within 15% of the actual idle times in more than three-quarters of the cases. We also show that the processing overhead of NeRTA is essentially negligible.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Inbäddad systemteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Embedded Systems (hsv//eng)
- NATURVETENSKAP -- Data- och informationsvetenskap -- Datorteknik (hsv//swe)
- NATURAL SCIENCES -- Computer and Information Sciences -- Computer Engineering (hsv//eng)
Keyword
- aerial drones
- Dynamic software updates
- mobile robotics
- safety-critical systems
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