Variable impedance actuators: A review

B Vanderborght, A Albu-Schäffer, A Bicchi… - Robotics and …, 2013 - Elsevier
Abstract Variable Impedance Actuators (VIA) have received increasing attention in recent
years as many novel applications involving interactions with an unknown and dynamic …

Enhanced stiffness modeling of manipulators with passive joints

A Pashkevich, A Klimchik, D Chablat - Mechanism and machine theory, 2011 - Elsevier
The paper presents a methodology to enhance the stiffness analysis of serial and parallel
manipulators with passive joints. It directly takes into account the influence of external and …

Sliding mode momentum observers for estimation of external torques and joint acceleration

G Garofalo, N Mansfeld, J Jankowski… - … Conference on Robotics …, 2019 - ieeexplore.ieee.org
Interactions between robots and their environment give rise to external wrenches acting on
the robot structure. The estimation of the resulting torques in the joints is fundamental in …

Design and analysis of cable-driven manipulators with variable stiffness

SH Yeo, G Yang, WB Lim - Mechanism and Machine Theory, 2013 - Elsevier
A manipulator with variable stiffness allows the manipulator to adjust its stiffness to suit for
different task requirements. In this paper, a cable-driven manipulator with the ability to …

Safe robot arm with safe joint mechanism using nonlinear spring system for collision safety

JJ Park, HS Kim, JB Song - 2009 IEEE International …, 2009 - ieeexplore.ieee.org
Collision safety between humans and robots has drawn much attention since service robots
are increasingly being used in human environments. A safe robot arm based on passive …

Designing optimally safe robot surface properties for minimizing the stress characteristics of human-robot collisions

JJ Park, S Haddadin, JB Song… - … conference on robotics …, 2011 - ieeexplore.ieee.org
Modeling of low severity soft-tissue injury due to unwanted collisions of a robot in
collaborative settings is an important aspect to be treated in safe physical Human-Robot …

Development of n-DoF Preloaded Structures for Impact Mitigation in Cobots

S Seriani, P Gallina, L Scalera… - Journal of …, 2018 - asmedigitalcollection.asme.org
A core issue in collaborative robotics is that of impact mitigation, especially when collisions
happen with operators. Passively compliant structures can be used as the frame of the …

Variable stiffness mechanism for human-friendly robots

D Hyun, HS Yang, J Park, Y Shim - Mechanism and Machine Theory, 2010 - Elsevier
We have developed a variable stiffness mechanism (VSM) for human-friendly robots to
simultaneously meet safety and performance needs. The VSM has high stiffness in normal …

Design and prototype of a tunable stiffness arm for safe human-robot interaction

Y She, HJ Su, C Lai, D Meng - … and information in …, 2016 - asmedigitalcollection.asme.org
In this paper, we present a tunable stiffness robot link for safe human-robot interaction.
Stiffness of a manipulator determines the injury levels of a human from an impact between …