Search Results for author: Pushpak Jagtap

Found 15 papers, 0 papers with code

Real Time Safety of Fixed-wing UAVs using Collision Cone Control Barrier Functions

no code implementations27 Jul 2024 Aryan Agarwal, Ravi Agrawal, Manan Tayal, Pushpak Jagtap, Shishir Kolathaya

Fixed-wing UAVs have transformed the transportation system with their high flight speed and long endurance, yet their safe operation in increasingly cluttered environments depends heavily on effective collision avoidance techniques.

Collision Avoidance valid

Temporal Logic Resilience for Dynamical Systems

no code implementations30 Apr 2024 Adnane Saoud, Pushpak Jagtap, Sadegh Soudjani

We use finite temporal logic to express the requirements on the acceptable functionality and define the resilience metric as the maximum disturbance under which the system satisfies the temporal requirements.

Symbolic Models for Interconnected Impulsive Systems

no code implementations28 Dec 2023 Sadek Belamfedel Alaoui, Adnane Saoud, Pushpak Jagtap, Abdalla Swikir

Our approach relies on the concept of "alternating simulation function" to establish a relationship between concrete subsystems and their symbolic models.

On Incremental Stability of Interconnected Switched Systems

no code implementations24 Aug 2023 Bhabani Shankar Dey, Indra Narayan Kar, Pushpak Jagtap

For the feedback interconnection, the small gain characterisation is presented for the overall system's incremental stability.

On the Efficacy and Noise-Robustness of Jointly Learned Speech Emotion and Automatic Speech Recognition

no code implementations21 May 2023 Lokesh Bansal, S. Pavankumar Dubagunta, Malolan Chetlur, Pushpak Jagtap, Aravind Ganapathiraju

New-age conversational agent systems perform both speech emotion recognition (SER) and automatic speech recognition (ASR) using two separate and often independent approaches for real-world application in noisy environments.

Automatic Speech Recognition Automatic Speech Recognition (ASR) +2

Approximation- and Chattering-free Quasi Sliding Mode Control for Unknown Systems

no code implementations21 Apr 2023 Pankaj K Mishra, Pushpak Jagtap

Motivated by the concept of Quasi-Sliding Mode (QSM) in discrete-time systems, this paper presents a novel approach that relaxes the requirement of ubiquitous exact sliding motion in continuous-time systems, aiming to achieve an approximation- and chattering-free quasi-sliding mode controller (QSMC).

Barrier Function-based Distributed Symbolic Controller for Multi-Agent Systems

no code implementations4 Apr 2023 David Smith Sundarsingh, Ratnangshu Das, Adnane Saoud, Pushpak Jagtap

In addition, we also provide an analysis on the effect of the CBF parameters on the conservatism introduced by our proposed approach in the size and domain of the synthesized controller.

Funnel-based Reward Shaping for Signal Temporal Logic Tasks in Reinforcement Learning

no code implementations30 Nov 2022 Naman Saxena, Gorantla Sandeep, Pushpak Jagtap

Signal Temporal Logic (STL) is a powerful framework for describing the complex temporal and logical behaviour of the dynamical system.

reinforcement-learning Reinforcement Learning +1

Compositional Approximately Bisimilar Abstractions of Interconnected Systems

no code implementations16 Nov 2022 Belamfedel Alaoui Sadek, Saharsh, Pushpak Jagtap, Adnane Saoud

This paper formulates and studies the concepts of approximate (alternating) bisimulation relations characterizing equivalence relations between interconnected systems and their abstractions.

Approximation-free Prescribed Performance Control with Prescribed Input Constraints

no code implementations12 Oct 2022 Pankaj K Mishra, Pushpak Jagtap

This paper considers the tracking control problem for an unknown nonlinear system with time-varying bounded disturbance subjected to a prescribed performance and input constraints.

Compositional Synthesis of Signal Temporal Logic Tasks via Assume-Guarantee Contracts

no code implementations18 Mar 2022 Siyuan Liu, Adnane Saoud, Pushpak Jagtap, Dimos V. Dimarogonas, Majid Zamani

In this paper, we focus on the problem of compositional synthesis of controllers enforcing signal temporal logic (STL) tasks over a class of continuous-time nonlinear interconnected systems.

Distributed Consensus of Stochastic Multi-agent Systems with Prescribed Performance Constraints

no code implementations7 Mar 2022 Pushpak Jagtap, Dimos V. Dimarogonas

This paper focuses on the problem of distributed consensus control of multi-agent systems while considering two main practical concerns (i) stochastic noise in the agent dynamics and (ii) predefined performance constraints over evolutions of multi-agent systems.

Synthesis of Partially Observed Jump-Diffusion Systems via Control Barrier Functions

no code implementations23 Sep 2021 Niloofar Jahanshahi, Pushpak Jagtap, Majid Zamani

In this paper, we study formal synthesis of control policies for partially observed jump-diffusion systems against complex logic specifications.

Control Barrier Functions for Unknown Nonlinear Systems using Gaussian Processes

no code implementations12 Oct 2020 Pushpak Jagtap, George J. Pappas, Majid Zamani

This paper focuses on the controller synthesis for unknown, nonlinear systems while ensuring safety constraints.

Gaussian Processes

dtControl: Decision Tree Learning Algorithms for Controller Representation

no code implementations12 Feb 2020 Pranav Ashok, Mathias Jackermeier, Pushpak Jagtap, Jan Křetínský, Maximilian Weininger, Majid Zamani

In particular the latter turns out to be extremely efficient, yielding decision trees with a single-digit number of decision nodes on 5 of the case studies.

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