Results 21 to 30 of about 42,913 (289)

Nonlinear dynamic analysis and state space representation of a manipulator under viscoelastic material conditions

South African Journal of Industrial Engineering, 2013
In this paper, based on the VoigtKelvin constitutive model, nonlinear dynamic modelling and state space representation of a viscoelastic beam acting as a flexible robotic manipulator is investigated. Complete nonlinear dynamic modelling of a viscoelastic
Esfandiar, H., Daneshmand, S.
doaj   +1 more source

COORDINATING LOCOMOTION AND MANIPULATION OF A MOBILE MANIPULATOR

IEEE Transactions on Automatic Control, 1994
A mobile manipulator in this study is a manipulator mounted on a mobile platform. Assuming the end point of the manipulator is guided, e.g., by a human operator to follow an arbitrary trajectory, it is desirable that the mobile platform is able to move as to position the manipulator in certain preferred configurations.
Yoshio Yamamoto, Xiaoping Yun
openaire   +4 more sources

Two Cooperating Manipulators with Fractional Controllers [PDF]

, 2009
This paper analyzes the dynamic performance of two cooperative robot manipulators. It is studied the implementation of fractional-order algorithms in the position/force control of two cooperating robotic manipulators holding an object.
Ferreira, Nuno M. F., József K. Tar, József K. Tar, N. M. Fonseca Ferreira, J. A. Tenreiro Machado, Tar, József K., Jozsef K., Machado, J. A. Tenreiro   +7 more
core   +1 more source

TVIM: Thermoactive Variable Impedance Module Evaluating Shear-Mode Capabilities of Polycaprolactone

IEEE Access
This paper presents a significant advancement in the field of thermoactive variable impedance modules by building upon prior research focused on utilizing thermal-induced changes in impedance within actuation systems.
Trevor Exley, Rashmi Wijesundara, Shuopu Wang, Arian Moridani, Taha Nilforooshan, Amir Jafari   +5 more
doaj   +1 more source

Robust tracking control of a robot manipulator using a passivity-based extended-state observer approach

IET Cyber-systems and Robotics, 2019
This study presents a combination of the robust passivity-based controller (RPBC) and an extended state observer (ESO) for the tracking control of a three degree-of-freedom PUMA 500 robot manipulator under parameter variations and external disturbances ...
Mohammed Ali, C.K. Alexander, C.K. Alexander   +2 more
doaj   +1 more source

A Suite of Robotic Solutions for Nuclear Waste Decommissioning

Robotics, 2021
Dealing safely with nuclear waste is an imperative for the nuclear industry. Increasingly, robots are being developed to carry out complex tasks such as perceiving, grasping, cutting, and manipulating waste. Radioactive material can be sorted, and either
Ivan Vitanov, Ildar Farkhatdinov, Brice Denoun, Francesca Palermo, Ata Otaran, Joshua Brown, Bukeikhan Omarali, Taqi Abrar, Miles Hansard, Changjae Oh, Stefan Poslad, Chen Liu, Hareesh Godaba, Ketao Zhang, Lorenzo Jamone, Kaspar Althoefer   +15 more
doaj   +1 more source

Fixed-Time Recurrent NN Learning Control of Uncertain Robotic Manipulators with Time-Varying Constraints: Experimental Verification

Sensors, 2023
This paper proposes a learning control framework for the robotic manipulator’s dynamic tracking task demanding fixed-time convergence and constrained output.
Qingxin Shi, Changsheng Li, Rui He, Xiaolong Zhu, Xingguang Duan   +4 more
doaj   +1 more source

Dynamic Manipulability of Robot Manipulators

Transactions of the Society of Instrument and Control Engineers, 1985
The concept of dynamic manipulability measure of robot arms is proposed as a quantitative measure of their manipulating ability in positioning and orienting the end-effectors, which takes the arm dynamics into consideration. This measure is defined on the basis of the relation between the joint driving force and the acceleration of the end-effector ...
openaire   +3 more sources

CuFormer U-Net: a transformer-enhanced multi-task network for cucumber leaf disease detection and segmentation

Frontiers in Plant Science
Cucumber foliar symptoms reduce functional leaf area and complicate greenhouse scouting. This study presents CuFormer U-Net, a Transformer-enhanced multi-task network for three-class image-level classification on the 3,754-image Kaggle benchmark (healthy,
Batyrkhan Omarov, Batyrkhan Omarov, Sayat Ibrayev, Nurbibi Imanbayeva   +3 more
doaj   +1 more source

The Omnirotor Platform: A Versatile, Multi-Modal, Coaxial, All-Terrain Vehicle

IEEE Access, 2023
Mobile and aerial robots offer many potential applications, including warehouse logistics, surveillance, cinematography, and search and rescue. However, most such robots are task-specific and generally lack the versatility to tackle multiple scenarios ...
Joao Buzzatto, Minas Liarokapis
doaj   +1 more source