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12th IFAC Symposium on Nonlinear control systems (NOLCOS)

作者： Hertneck, Michael Allgoewer, Frank Univ Stuttgart Inst Syst Theory & Automat Control D-70569 Stuttgart Germany

ISBN: (纸本)9781713872344

When designing networked control systems (NCS), stability guarantees are typically derived based on the maximum possible time between successive transmissions. A bound on this time is called the maximum allowable transmission interval (MATI). In order to minimize network usage, one is often interested in the maximum value of the MATI for which stability can still be guaranteed for the NCS. However, in many practical scenarios, the worst case transmission behavior occurs only seldom, rendering an analysis based solely on the MATI unnecessarily conservative. It was recently shown in the literature that considering information about the average allowable transmission interval in the form of a reverse average dwell time (RADT) can be used to increase the maximum value of the MATI for which stability can be guaranteed. Using the same assumptions, we show that stability guarantees can even be obtained for any arbitrary given value of the MATI as long as the RADT is small enough.

关键词： Quantized Feedback and Feedback with Communication Constraints control of sampled data systems Hybrid Nonlinear control systems

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Resilient scheduler and controller codesign for mixed-critical embedded control systems 22

Resilient scheduler and controller codesign for mixed-critic...

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22nd World Congress of the International Federation of Automatic control (IFAC)

作者： Al Khatib, Mohammad Bajcinca, Naim Tech Univ Kaiserslautern Dept Mech & Proc Engn Kaiserslautern Germany

ISBN: (纸本)9781713872344

Designing stable embedded control systems presents challenges when limited communication and computation resources are involved. This document provides an approach to codesign a scheduler and a resilient controller for a given set of linear mixed-critical embedded control systems sharing a number of computation resources. Precisely, we are interested in optimizing control inputs and resource allocation in order to ensure control performance, resilience, and faster feedback control response for more critical tasks. The approach is based on a formulation of the problem in the form of a mixed-integer MPC problem. The latter is solved online and provide controllers with new updates, while the latest previous inputs are held constant otherwise. We demonstrate the validity of our approach on an illustrative example. Copyright (c) 2023 The Authors.

关键词： Optimization and Scheduling control of sampled data systems Lyapunov Methods Mixed-integer programming Event-triggered control Network control systems

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Resilient scheduler and controller codesign for mixed-critical embedded control systems

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IFAC-PapersOnLine 2023年第2期56卷 9793-9798页

作者： Mohammad Al Khatib Naim Bajcinca

关键词： Optimization and Scheduling control of sampled data systems Lyapunov Methods Mixed-integer programming Event-triggered control Network control systems

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Reverse average dwell time constraints enable arbitrary maximum allowable transmission intervals

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IFAC-PapersOnLine 2023年第1期56卷 379-384页

作者： Michael Hertneck Frank Allgöwer University of Stuttgart Institute for Systems Theory and Automatic Control 70569 Stuttgart Germany

关键词： Quantized Feedback Feedback with Communication Constraints control of sampled data systems Hybrid Nonlinear control systems

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