In this article we consider the general problem of how to properly endow a stochastic port-Hamiltonian system (SPHS) with an energy tank, that is an energy reservoir that allows to guarantee the passivity property. We show that a stochastic bilateral teleoperation system, composed by a master robot and a slave robot modeled as SPHS, can be connected in a power-preserving manner to energy tanks. The stored energy is continuously monitored to keep the system passive despite time-varying communication delays and interaction with unknown environment that may destabilize the overall system. We will address latter problem considering a SPHS affected by a noise composed by a linear, multiplicative component in Ito form plus an additive one. We underline that such a scenario requires the introduction of an ad hoc notion of passivity.

Bilateral teleoperation of stochastic port‐Hamiltonian systems using energy tanks

Cordoni, Francesco;Di Persio, Luca;Muradore, Riccardo
2021

Abstract

In this article we consider the general problem of how to properly endow a stochastic port-Hamiltonian system (SPHS) with an energy tank, that is an energy reservoir that allows to guarantee the passivity property. We show that a stochastic bilateral teleoperation system, composed by a master robot and a slave robot modeled as SPHS, can be connected in a power-preserving manner to energy tanks. The stored energy is continuously monitored to keep the system passive despite time-varying communication delays and interaction with unknown environment that may destabilize the overall system. We will address latter problem considering a SPHS affected by a noise composed by a linear, multiplicative component in Ito form plus an additive one. We underline that such a scenario requires the introduction of an ad hoc notion of passivity.
bilateral teleoperation
passivity
stochastic port-Hamiltonian systems
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11562/1054929
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