Physics-informed reinforcement learning for motion control of a fish-like swimming robot

C Rodwell, P Tallapragada - Scientific Reports, 2023 - nature.com
Motion control of fish-like swimming robots presents many challenges due to the
unstructured environment and unmodelled governing physics of the fluid–robot interaction …

Swimming on limit cycles with nonholonomic constraints

B Pollard, V Fedonyuk, P Tallapragada - Nonlinear Dynamics, 2019 - Springer
The control and motion planning of bioinspired swimming robots is complicated by the fluid–
robot interaction, which is governed by a very high (infinite)-dimensional nonlinear system …

Fermi-like acceleration and power-law energy growth in nonholonomic systems

IA Bizyaev, AV Borisov, VV Kozlov, IS Mamaev - Nonlinearity, 2019 - iopscience.iop.org
This paper is concerned with a nonholonomic system with parametric excitation—the
Chaplygin sleigh with time-varying mass distribution. A detailed analysis is made of the …

Bioinspired pursuit with a swimming robot using feedback control of an internal rotor

BA Free, J Lee, DA Paley - Bioinspiration & Biomimetics, 2020 - iopscience.iop.org
Theoretical guarantees of capture become complicated in the case of a swimming fish or fish
robot because of the oscillatory nature of the fish heading. Building on the connection …

Parametric roll oscillations of a hydrodynamic Chaplygin sleigh

K Loya, P Tallapragada - Nonlinear Dynamics, 2023 - Springer
Biomimetic underwater robots use lateral periodic oscillatory motion to propel forward, which
is seen in most fishes known as body-caudal fin (BCF) propulsion. The lateral oscillatory …

The Chaplygin sleigh with friction moving due to periodic oscillations of an internal mass

IA Bizyaev, AV Borisov, SP Kuznetsov - Nonlinear Dynamics, 2019 - Springer
For a Chaplygin sleigh moving in the presence of weak friction, we present and investigate
two mechanisms of arising acceleration due to oscillations of an internal mass. In certain …

Induced and tunable multistability due to nonholonomic constraints

C Rodwell, P Tallapragada - Nonlinear Dynamics, 2022 - Springer
Multistability is an area of interest in robotics and locomotion because the ability to achieve
multiple configurations or generate multiple gaits allows a single robotic or mechanical …

The role of dynamic friction in the appearance of periodic oscillations in mechanical systems

J González-Carbajal, D García-Vallejo, J Domínguez… - Nonlinear …, 2024 - Springer
This article investigates the appearance of periodic mechanical oscillations associated with
the transition between static and dynamic friction regimes. The study employs a mechanical …

Locomotion of a compliant mechanism with nonholonomic constraints

V Fedonyuk, P Tallapragada - Journal of …, 2020 - asmedigitalcollection.asme.org
Compliant mechanisms have been studied extensively as an alternative to traditional rigid
body design with advantages like part number reduction, compliance, and multistable …

Trajectory tracing in figure skating

M Rhodes, V Putkaradze - Nonlinear Dynamics, 2022 - Springer
In this work, we model the movement of a figure skater gliding on ice by the Chaplygin
sleigh, a classic pedagogical example of a nonholonomic mechanical system. The …