Publications by Jonas Buchli | EPFL Graph Search

Related publications (19)

Dynamic hebbian learning in adaptive frequency oscillators

Auke Ijspeert, Ludovic Righetti, Jonas Buchli

Nonlinear oscillators are widely used in biology, physics and engineering for modeling and control. They are interesting because of their synchronization properties when coupled to other dynamical systems. In this paper, we propose a learning rule for osci ...

2006

Engineering limit cycle systems : adaptive frequency oscillators and applications to adaptive locomotion control of compliant robots

Jonas Buchli

In this thesis, we present a dynamical systems approach to adaptive controllers for locomotion control. The approach is based on a rigorous mathematical framework using nonlinear dynamical systems and is inspired by theories of self-organization. Nonlinear ...

EPFL2007

Slow-fast Dynamics of Strongly Coupled Adaptive Frequency Oscillators

Auke Ijspeert, Ludovic Righetti, Jonas Buchli

Oscillators have two main limitations: their synchronization properties are limited (i.e., they have a finite synchronization region) and they have no memory of past interactions (i.e., they return to their intrinsic frequency whenever the entraining signa ...

SIAM PUBLICATIONS2021

Magnetic control of tokamak plasmas through deep reinforcement learning

Olivier Sauter, Basil Duval, Stefano Coda, Ambrogio Fasoli, Jean-Marc Moret, Federico Alberto Alfredo Felici, Cristian Sommariva, Antoine Pierre Emmanuel Alexis Merle, Cristian Galperti, Jonas Buchli, Francesco Carpanese, Federico Pesamosca

Nuclear fusion using magnetic confinement, in particular in the tokamak configuration, is a promising path towards sustainable energy. A core challenge is to shape and maintain a high-temperature plasma within the tokamak vessel. This requires high-dimensi ...

2022

Towards practical reinforcement learning for tokamak magnetic control

Federico Alberto Alfredo Felici, Jonas Buchli, Cristian Galperti

Reinforcement learning (RL) has shown promising results for real-time control systems, including the domain of plasma magnetic control. However, there are still significant drawbacks compared to traditional feedback control approaches for magnetic confinem ...

Elsevier Science Sa2024

Self-organized adaptive legged locomotion in a compliant quadruped robot

Auke Ijspeert, Jonas Buchli

In this contribution we present experiments of an adaptive locomotion controller on a compliant quadruped robot. The adaptive controller consists of adaptive frequency oscillators in different configurations and produces dynamic gaits such as bounding and ...

2008

Adaptive Frequency Oscillators and Applications

Auke Ijspeert, Ludovic Righetti, Jonas Buchli

In this contribution we present a generic mechanism to transform an oscillator into an adaptive frequency oscillator, which can then dynamically adapt its parameters to learn the frequency of any periodic driving signal. Adaptation is done in a dynamic way ...

2009

Resonant neurons and bushcricket behaviour

Auke Ijspeert, Jonas Buchli

The resonant properties of the intrinsic dynamics of single neurons could play a direct role in behaviour. One plausible role is in the recognition of temporal patterns, such as that seen in the auditory communication systems of Orthoptera. Recent behaviou ...

2007

Frequency analysis with coupled nonlinear oscillators

Auke Ijspeert, Ludovic Righetti, Jonas Buchli

We present a method to obtain the frequency spectrum of a signal with a nonlinear dynamical system. The dynamical system is composed of a pool of adaptive frequency oscillators with negative mean-field coupling. For the frequency analysis, the synchronizat ...

2008

Nonlinear modelling of double and triple period pitch breaks in vocal fold vibration

Auke Ijspeert, Jonas Buchli

This paper reports a study on short-time subharmonic pitch breaks in vocal fold vibration, which are found to be a common feature of the human voice in spoken language. The observed pitch breaks correspond to a change in periodicity of the electrolaryngogr ...

2006

Jonas Buchli

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Dynamic hebbian learning in adaptive frequency oscillators

Engineering limit cycle systems : adaptive frequency oscillators and applications to adaptive locomotion control of compliant robots

Slow-fast Dynamics of Strongly Coupled Adaptive Frequency Oscillators

Magnetic control of tokamak plasmas through deep reinforcement learning

Towards practical reinforcement learning for tokamak magnetic control

Self-organized adaptive legged locomotion in a compliant quadruped robot

Adaptive Frequency Oscillators and Applications

Resonant neurons and bushcricket behaviour

Frequency analysis with coupled nonlinear oscillators

Nonlinear modelling of double and triple period pitch breaks in vocal fold vibration

Engineering Entrainment and Adaptation in Limit Cycle Systems -- From biological inspiration to applications in robotics

Finding Resonance: Adaptive Frequency Oscillators for Dynamic Legged Locomotion

Learning motions from demonstrations and rewards with time-invariant dynamical systems based policies

Adaptive Frequency Oscillators applied to dynamic walking II. Adapting to resonant body dynamics

Adaptive Four Legged Locomotion Control Based on Nonlinear Dynamical Systems

Dynamical principles in neuronal systems and robotics

Adaptive dynamical systems: A promising tool for embodied artificial intelligence

Programmable Central Pattern Generators

Institute Presentation: Biologically Inspired Robotics Group at EPFL