Browsing by Author "Maass, Alejandro I."

Now showing 1 - 2 of 2
  • No Thumbnail Available
    Item
    On stochastic string stability with applications to platooning over additive noise channels
    (2025) Vargas, Francisco J.; Gordon, Marco A.; Peters, Andres A.; Maass, Alejandro I.
    This paper addresses the string stabilization of vehicular platooning when stochastic phenomena are inherent in inter-vehicle communication. To achieve this, we first provide two definitions to analytically assess the string stability in stochastic scenarios, considering the mean and variance of tracking errors as the platoon size grows. Subsequently, we analytically derive necessary and sufficient conditions to achieve this notion of string stability in predecessor-following linear platoons that communicate through additive white noise channels. We conclude that the condition ensuring string stability with ideal communication is essentially the same that achieves stochastic string stability when additive noise channels are in place and guarantees that the tracking error means and variances converge.
  • No Thumbnail Available
    Item
    Transmit power policies for stochastic stabilisation of multi-link wireless networked control systems
    (2025) Maass, Alejandro I.; Nesic, Dragan; Postoyan, Romain; Varma, Vineeth S.; Lasaulce, Samson; Munoz-Carpintero, Diego
    Transmit power control is crucial in wireless networks due to limited battery power, impacting both economic and environmental aspects by reducing power consumption. High transmission power diminishes node lifespan, causes interference, and pollution. Existing work in wireless networks mainly focuses on power policies for communication aspects like quality of service and channel capacity, while wireless networked control systems (WNCSs) require adapted policies for controloriented requirements such as stability. Recent research in the control community has predominantly focused on linear systems or non-linear systems with a single-link perspective. This paper introduces a framework for designing stabilising transmit power levels for broader classes of non-linear plants and multi-link scenarios. By considering the non-linear relationship between channel success probabilities and transmit power, we establish stability conditions linking channel probabilities and transmission rate. These results, along with practical interference models, offer a methodology for stabilising transmit power in non-linear and multi-link WNCSs. (c) 2024 Elsevier Ltd. All rights are reserved, including those for text and data mining, AI training, and similar technologies.