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 …
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 …
robot interaction, which is governed by a very high (infinite)-dimensional nonlinear system …
Fermi-like acceleration and power-law energy growth in nonholonomic systems
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 …
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 …
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 …
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
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 …
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 …
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
This article investigates the appearance of periodic mechanical oscillations associated with
the transition between static and dynamic friction regimes. The study employs a mechanical …
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 …
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 …
sleigh, a classic pedagogical example of a nonholonomic mechanical system. The …