Nonlinear disturbance observer design for robotic manipulators

A Mohammadi, M Tavakoli, HJ Marquez… - Control Engineering …, 2013 - Elsevier
Robotic manipulators are highly nonlinear and coupled systems that are subject to different
types of disturbances such as joint frictions, unknown payloads, varying contact points, and …

Sensorless haptic control for human-robot collaborative assembly

S Liu, L Wang, XV Wang - CIRP Journal of Manufacturing Science and …, 2021 - Elsevier
This paper presents an approach to haptically controlling an industrial robot without using
any external sensors for human-robot collaborative assembly. The sensorless haptic control …

Nonlinear disturbance observers for robotic continuum manipulators

C Veil, D Mueller, O Sawodny - Mechatronics, 2021 - Elsevier
Robots are an indispensable part of modern production lines. Usually working in designated
areas, they are separated from human workers in order to avoid collisions. A safe …

Adaptive hybrid force/position control of robot manipulators using an adaptive force estimator in the presence of parametric uncertainty

SAM Dehghan, M Danesh, F Sheikholeslam - Advanced Robotics, 2015 - Taylor & Francis
This study is devoted to sensorless adaptive force/position control of robot manipulators
using a position-based adaptive force estimator (AFE) and a force-based adaptive …

Null-space impedance control with disturbance observer

H Sadeghian, M Keshmiri, L Villani… - 2012 IEEE/RSJ …, 2012 - ieeexplore.ieee.org
In this paper a new approach for the null-space impedance control of a kinematically
redundant robot is proposed. The approach is useful for the case where the robot …

Sensor-less external force detection for industrial manipulators to facilitate physical human-robot interaction

B Yao, Z Zhou, L Wang, W Xu, Q Liu - Journal of Mechanical Science and …, 2018 - Springer
Sensor-less external force detection is important for industrial robots which are usually not
equipped with external force sensors to be applied in physical human-robot interaction …

Robust control-based linear bilateral teleoperation system without force sensor

H Amini, V Dabbagh, SM Rezaei, M Zareinejad… - Journal of the Brazilian …, 2015 - Springer
Among the prevalent methods in linear bilateral teleoperation systems with communication
channel time delays is to employ position and velocity signals in the control scheme …

Adaptive force–environment estimator for manipulators based on adaptive wavelet neural network

SAM Dehghan, M Danesh, F Sheikholeslam… - Applied Soft …, 2015 - Elsevier
This study focuses on the accurate tracking control and sensorless estimation of external
force disturbances on robot manipulators. The proposed approach is based on an adaptive …

Adaptive motion/force control of uncertain nonholonomic mobile manipulator with estimation of unknown external force

M Boukattaya, N Mezghani, T Damak - Multibody System Dynamics, 2018 - Springer
This paper describes a stable adaptive motion/force control of uncertain nonholonomic
mobile manipulator with the consideration of external force. As it is well known, unexpected …

An adaptive manipulator controller based on force and parameter estimation

M Danesh, F Sheikholeslam… - IEICE transactions on …, 2006 - search.ieice.org
Consideration of manipulator dynamics and external disturbances in robot control system
design can enhance the stability and performance properties of the whole system. In this …