All Outputs (43)

A robotic test rig for performance assessment of prosthetic joints (2022)
Journal Article

Movement within the human body is made possible by joints connecting two or more elements of the musculoskeletal system. Losing one or more of these connections can seriously limit mobility, which in turn can lead to depression and other mental issue... Read More about A robotic test rig for performance assessment of prosthetic joints.

Virtual inertia as an energy dissipation element for haptic interfaces (2022)
Journal Article

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 hig... Read More about Virtual inertia as an energy dissipation element for haptic interfaces.

Bio-inspired knee joint: Trends in the hardware systems development (2021)
Journal Article

The knee joint is a complex structure that plays a significant role in the human lower limb for locomotion activities in daily living. However, we are still not quite there yet where we can replicate the functions of the knee bones and the attached l... Read More about Bio-inspired knee joint: Trends in the hardware systems development.

Multilateral teleoperation over communication time delay using the time-domain passivity approach (2019)
Journal Article

A general framework to stabilize multilateral teleoperation system over a communication time delay based on the well-known time-domain passivity approach (TDPA) is proposed. The uniqueness of this framework is that it is independent of the amount of... Read More about Multilateral teleoperation over communication time delay using the time-domain passivity approach.

Enhancing the rate-hardness of haptic interaction: Successive force augmentation approach (2019)
Journal Article

© 1982-2012 IEEE. There have been numerous approaches that have been proposed to enlarge the impedance range of haptic interaction while maintaining stability. However, enhancing the rate-hardness of haptic interaction while maintaining stability is... Read More about Enhancing the rate-hardness of haptic interaction: Successive force augmentation approach.

Enhancing the force transparency of time domain passivity approach: Observer-based gradient controller (2019)
Presentation / Conference Contribution

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 co... Read More about Enhancing the force transparency of time domain passivity approach: Observer-based gradient controller.

The Input-to-State Stable (ISS) approach for stabilizing haptic interaction with virtual environments (2017)
Journal Article

© 2004-2012 IEEE. Passivity has been a major criterion for designing a stable haptic interface due to its numerous advantages. However, passivity-based controllers have suffered from the design conservatism of the passivity criterion, particularly wh... Read More about The Input-to-State Stable (ISS) approach for stabilizing haptic interaction with virtual environments.

Multi degree-of-freedom successive stiffness increment approach for high stiffness haptic interaction (2016)
Presentation / Conference Contribution

In haptic interaction, stability and the object’s hardness perception are of great significance. Although numerous studies have been done for stable haptic interaction, however, most of them sacrifice the actual displayed stiffness as a cost of stabi... Read More about Multi degree-of-freedom successive stiffness increment approach for high stiffness haptic interaction.

Independent force and position control for cooperating manipulators handling an unknown object and interacting with an unknown environment (2016)
Journal Article

© 2016 The Franklin Institute. Published by Elsevier Ltd. All rights reserved. This paper presents a unified framework for system design and control in cooperative robotic systems. It introduces a highly generalized cooperative system configuration t... Read More about Independent force and position control for cooperating manipulators handling an unknown object and interacting with an unknown environment.

Stable admittance type haptic interaction based on time domain passivity approach (2015)
Journal Article

In this paper, we propose a stable and high transparent admittance haptic display even in free space haptic rendering. Because considering admittance haptic rendering as a one-port network is not enough to detect the active energy, new representation... Read More about Stable admittance type haptic interaction based on time domain passivity approach.

6-DOF extension of memory-based passivation approach for stable haptic interaction (2014)
Journal Article

© 2014, Springer-Verlag Berlin Heidelberg. This paper extends previously proposed memory-based passivity approach (MBPA) to 6 degrees-of-freedom (DOF) haptic interactions. By introducing 6-DOF virtual proxy and virtual object, connected with haptic i... Read More about 6-DOF extension of memory-based passivation approach for stable haptic interaction.

Sliding mode hybrid impedance control of robot manipulators interacting with unknown environments using VSMRC method (2013)
Presentation / Conference Contribution

In the present paper, the objective of hybrid impedance control is specified and a robust hybrid impedance control approach is proposed. Based on the concept of hybrid control, the task space is decomposed into position and force controlled subspaces... Read More about Sliding mode hybrid impedance control of robot manipulators interacting with unknown environments using VSMRC method.

Physiological data measurement in digital manufacturing
Presentation / Conference Contribution

As industry is moving towards a new digital rev-olution, identifying workers' mental and physical status is key to improved productivity in a digital manufacturing scenario. The main objective here is to provide an overview of sensing technologies in... Read More about Physiological data measurement in digital manufacturing.

Hybrid force-motion control of coordinated robots interacting with unknown environments
Presentation / Conference Contribution

© 2014 Institute of Control, Robotics and Systems (ICROS). This paper presents a unified framework for system design and control in cooperative robotic systems. It introduces a highly general cooperative system configuration involving any number of m... Read More about Hybrid force-motion control of coordinated robots interacting with unknown environments.

Input-to-state stable approach to release the conservatism of passivity-based stable haptic interaction
Presentation / Conference Contribution

© 2015 IEEE. 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. Th... Read More about Input-to-state stable approach to release the conservatism of passivity-based stable haptic interaction.

A de-risked bio-inspired condylar prosthetic knee joint for a robotic leg test rig
Presentation / Conference Contribution

The design of the human knee joint has been a challenging task due to the presence of intricate parts, complex mechanisms and their interdependence which joins them together. A bio-inspired design for the condylar knee joint has been proposed in earl... Read More about A de-risked bio-inspired condylar prosthetic knee joint for a robotic leg test rig.

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

© 2015 IEEE. 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 environm... Read More about Increasing the impedance range of admittance-type haptic interfaces by using Time Domain Passivity Approach.

Stable and transparent teleoperation over communication time-delay: Observer-based input-to-state stable approach
Presentation / Conference Contribution

In this paper, an observer-based input-to-state stable approach is proposed to stabilize teleoperation systems over communication time-delay with better transparency compared with passivity approaches. In this paper, input-to-state stable approach is... Read More about Stable and transparent teleoperation over communication time-delay: Observer-based input-to-state stable approach.

Stable bilateral teleoperation with input-to-state stable approach
Presentation / Conference Contribution

Passivity has been the most often used constraint for the controller design of bilateral teleoperation systems. However passivity has been suffering from its own design conservatism since this is a sufficient condition for stability and representing... Read More about Stable bilateral teleoperation with input-to-state stable approach.

Application of machine learning towards design optimisation of bio-inspired transfemoral prosthetic socket for robotic leg test rig
Presentation / Conference Contribution

In the past century many medical advancements in prosthetics have been achieved, however, discomfort in prosthetic socket remains one of the toughest challenges faced by both amputees and prosthetists. Wearing an uncomfortable socket can lead to user... Read More about Application of machine learning towards design optimisation of bio-inspired transfemoral prosthetic socket for robotic leg test rig.