A control method for joint torque minimization of redundant manipulators handling large external forces

J Woolfrey, W Lu, D Liu - Journal of Intelligent & Robotic Systems, 2019 - Springer
In this paper, a control method is developed for minimizing joint torque on a redundant
manipulator where an external force acts on the end-effector. Using null space control, the …

A robotic system for steel bridge maintenance: Research challenges and system design

DK Liu, G Dissayanake, PB Manamperi… - Proceedings of the …, 2008 - opus.lib.uts.edu.au
This paper presents the research on and development of a robotic system for stripping paint
and rust from steel bridges, with the ultimate objective of preventing human exposure to …

Autonomous robot manipulator-based exploration and mapping system for bridge maintenance

G Paul, S Webb, D Liu, G Dissanayake - Robotics and Autonomous …, 2011 - Elsevier
This paper presents a system for Autonomous eXploration to Build A Map (AXBAM) of an
unknown, 3D complex steel bridge structure using a 6 degree-of-freedom anthropomorphic …

The ANBOT: An intelligent robotic co-worker for industrial abrasive blasting

MG Carmichael, S Aldini, R Khonasty… - 2019 IEEE/RSJ …, 2019 - ieeexplore.ieee.org
We present the ANBOT, an intelligent robotic coworker for physical human-robot
collaboration. The ANBOT system assists workers performing industrial abrasive blasting …

An effective exploration approach to simultaneous mapping and surface material–type identification of complex three‐dimensional environments

G Paul, D Liu, N Kirchner… - Journal of Field …, 2009 - Wiley Online Library
This paper presents an integrated exploration approach for geometric mapping and surface
material–type identification of complex three‐dimensional (3D) environments using a six …

A robotic system for steel bridge maintenance: Field testing

G Paul, S Webb, D Liu… - Proceedings of the 2010 …, 2010 - opus.lib.uts.edu.au
This paper presents the field testing results of an autonomous manipulator-based robotic
system that strips the paint and rust from steel bridges [Liu et al., 2008]. The key components …

An efficient trajectory planning approach for autonomous robots in complex bridge environments

WK To, G Paul, NM Kwok, D Liu - International Journal of …, 2009 - inderscienceonline.com
This paper presents an efficient trajectory planning approach for a 6DOF robotic manipulator
conducting grit-blasting in complex bridge structural environments. The proposed approach …

Investigation of reducing fatigue and musculoskeletal disorder with passive actuators

MG Carmichael, D Liu… - 2010 IEEE/RSJ …, 2010 - ieeexplore.ieee.org
Robotic systems such as exoskeletons can be effectively used in the reduction of fatigue and
musculoskeletal disorders (MSD) associated with physical tasks, but robots which work in …

Simultaneous material type classification and mapping data acquisition using a laser range finder

NG Kirchner, T Taha, D Liu… - … Conference on Intelligent …, 2007 - opus.lib.uts.edu.au
This paper presents a method for single sensor simultaneous derivation of three-
dimensional mapping data and material type data for use in an autonomous sandblasting …

[PDF][PDF] Capacitive object ranging and material type classifying sensor

N Kirchner, DK Liu, T Taha, G Paul - Proceedings of the 8th …, 2007 - researchgate.net
This paper presents modifications made to the Adaptive Capacitive Sensor for Obstacle
Ranging (ACSOR)[1] that have enabled the sensor to provide material type data for an …