Results 31 to 40 of about 3,485 (285)

An improved artificial potential field method of trajectory planning and obstacle avoidance for redundant manipulators

open access: yesInternational Journal of Advanced Robotic Systems, 2018
In this article, we present an improved artificial potential field method of trajectory planning and obstacle avoidance for redundant manipulators. Specifically, we not only focused on the position for the manipulator end-effectors but also considered ...
Wenrui Wang   +5 more
doaj   +1 more source

Space Frames with Multiple Stable Configurations [PDF]

open access: yes, 2007
This paper is concerned with beamlike spaceframes that include a large number of bistable elements, and exploit the bistability of the elements to obtain structures with multiple stable configurations.
Pellegrino, S., Schioler, T.
core   +1 more source

Simultaneous Planning Method Considering Both Overall Configuration and End Pose for Hyper-Redundant Manipulators

open access: yesIEEE Access, 2019
Featured by extreme flexibility, hyper-redundant manipulators are gradually developed and applied to perform detection and maintenance tasks in confined on-orbit environments.
Zonggao Mu   +5 more
doaj   +1 more source

A Stiffness-Adjustable Hyperredundant Manipulator Using a Variable Neutral-Line Mechanism for Minimally Invasive Surgery [PDF]

open access: yes, 2013
In robotic single-port surgery, it is desirable for a manipulator to exhibit the property of variable stiffness. Small-port incisions may require both high flexibility of the manipulator for safety purposes, as well as high structural stiffness for ...
Cheng, Shanbao   +3 more
core   +1 more source

Hyper Redundant Manipulators

open access: yes, 2010
The research group from the Faculty of Automation, Computers and Electronics, University of Craiova, Romania, started working in research field of hyper redundant robots over 25 years ago. The experiments used cables and DC motors or stepper motors. The rotation of these motors rotates the cables which by correlated screwing and unscrewing of their ...
Ivanescu, Mircea, Cojocaru, Dorian
openaire   +3 more sources

Using Parameterized Black-Box Priors to Scale Up Model-Based Policy Search for Robotics [PDF]

open access: yes, 2018
The most data-efficient algorithms for reinforcement learning in robotics are model-based policy search algorithms, which alternate between learning a dynamical model of the robot and optimizing a policy to maximize the expected return given the model ...
Chatzilygeroudis, Konstantinos   +1 more
core   +2 more sources

Motion Control of Hyper Redundant Robots by Learning Control Based on Linear Combination of Error History and Initial Configuration Optimization with Backward Learning

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2008
This paper describes the motion control of hyper redundant robots using a learning control scheme based on linear combination of error history. The learning control scheme is formulated with three elements: general solution of inverse kinematics with ...
Daisuke MATSUURA, Nobuyuki IWATSUKI
doaj   +1 more source

Maxwell Model-Based Null Space Compliance Control in the Task-Priority Framework for Redundant Manipulators

open access: yesIEEE Access, 2020
Improving robot performance while simultaneously ensuring compliance and human safety has been appealing for a long time and remains a challenge. To this end, we propose a new approach for kinematic control of redundant manipulators to deal with multiple
Le Fu, Jie Zhao
doaj   +1 more source

A Closed-Form Solution for the Inverse Kinematics of the 2n-DOF Hyper-Redundant Manipulator Based on General Spherical Joint

open access: yesApplied Sciences, 2021
This paper presents a closed-form inverse kinematics solution for the 2n-degree of freedom (DOF) hyper-redundant serial manipulator with n identical universal joints (UJs).
Ya’nan Lou   +4 more
doaj   +1 more source

Manipulation of a Pneumatic Hyper-Redundant Actuator

open access: yesTRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C, 2011
Pneumatically controlled and actuated planar snake-like device has been developed. Each joint is controlled by hardware-implemented algorithm inspired by snake's lateral undulatory locomotion. Therefore the device progresses forward whenever the lateral movement is constrained, such as a winding groove by which the tip element is guided.
Hisashi DATE, Yoshihiro TAKITA
openaire   +2 more sources

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