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Aghil Jafari

7 accepted papers

2022

Virtual Inertia as an Energy Dissipation Element for Haptic Interfaces

RA-L 2022

Adding virtual damping to dissipate energy has been a major tool for designing stable haptic interfaces in most passivity-based approaches. However, virtual damping is known to dissipate a limited amount of energy. It even generates energy during high-velocity interaction because of the digitization

Cited by 2SourceScholar
2019

Enhancing the Force Transparency of Time Domain Passivity Approach: Observer-Based Gradient Controller

ICRA 2019poster

Passivity has been the most often used constraint for the stable controller design of bilateral teleoperation systems. Especially, Time Domain Passivity Approach (TDPA) has been used in many applications since it has been known as one of the least conservative passivity-based approaches. Although TD…

Cited by 20SourceScholar
2018

Enhancing the Command-Following Bandwidth for Transparent Bilateral Teleoperation

IROS 2018poster

Enhancing transparency of a teleoperation system by increasing the command-following bandwidth has not received lots of attention so far. This is considered a challenging task since in a teleoperation system the command-following bandwidth of the slave robot motion controller cannot be increased wit…

Cited by 4SourceScholar
2017

Realizing low-impedance rendering in admittance-type haptic interfaces using the input-to-state stable approach

IROS 2017poster

This paper proposes an approach to enlarge the impedance range of admittance-type haptic interfaces. Admittance-type haptic interfaces have advantages over impedance-type haptic interfaces in the interaction with high impedance virtual environments. However, the performance of admittance-type haptic…

Cited by 4SourceScholar
2015

Increasing the impedance range of admittance-type haptic interfaces by using Time Domain Passivity Approach

IROS 2015poster

This paper proposes a method to increase the impedance range of admittance-type haptic interfaces. Admittance-type haptic interfaces are used in various applications that typically require interaction with high impedance virtual environments. However, the performance of admittance haptic interfaces…

Cited by 7SourceScholar
2015

Input-to-state stable approach to release the conservatism of passivity-based stable haptic interaction

ICRA 2015poster

Passivity has been a major criterion on designing a stable haptic interface due to many advantages. However, passivity has been suffering from its intrinsic conservatism since it only represents a small set of the whole stable region. Therefore, there was always limitation to increase the performanc…

Cited by 18SourceScholar