Results 21 to 30 of about 1,018,744 (298)

Study on Collision Dynamics Model and Multi-Body Contact Forces of Ball Cage Flexible Joint Considering Clearance

open access: yesMachines, 2023
Flexible joints are widely used in ‘soft’ touching and holding, and they represent the main component of ultra-short radius drilling tools. The analysis of contact and motion characteristics is an essential issue in the design and development stage of ...
Xiuxing Zhu   +6 more
doaj   +1 more source

NiO/Perovskite Heterojunction Contact Engineering for Highly Efficient and Stable Perovskite Solar Cells

open access: yesAdvanced Science, 2020
Recent research shows that the interface state in perovskite solar cells is the main factor which affects the stability and performance of the device, and interface engineering including strain engineering is an effective method to solve this issue.
Bingjuan Zhang   +8 more
doaj   +1 more source

Design and Modeling of a Bio-Inspired Flexible Joint Actuator

open access: yesActuators, 2021
Spiders rely on a hydraulic system to stretch their legs but use muscles to make their legs flex. The compound drive of hydraulics and muscle makes an integrate dexterous structure with powerful locomotion abilities, which perfectly meets the primary ...
Ming Xu, Cheng Rong, Long He
doaj   +1 more source

An Adaptive Torque Observer Based on Fuzzy Inference for Flexible Joint Application

open access: yesMachines, 2023
Torque observation techniques have been widely employed to estimate the load torque of flexible joints driven by a permanent magnet synchronous machine (PMSM).
Yang Liu   +4 more
doaj   +1 more source

A Method for Solving the Additional Stiffness Introduced by Flexible Joints in Stewart Platform Based on FEM Modal Analysis

open access: yesMachines, 2023
The usage of flexible joints has greatly facilitated the widespread application of the Stewart construction mechanism in many advanced fields. This research focuses on the problem that the flexible joints in the Stewart mechanism cause additional ...
Tianqing Zhang   +5 more
doaj   +1 more source

Modelling Flexible Manipulators With Motors at the Joints [PDF]

open access: yesMathematical and Computer Modelling of Dynamical Systems, 2002
A computationally efficient recursive model of a flexible manipulator with motors at the joints is described in this paper. The model adopts a mixed Eulerian and Lagrangian formulation of the equations of a flexible body and exploits the chained structure of the equations for a serial manipulator.
BASCETTA, LUCA, ROCCO, PAOLO
openaire   +2 more sources

DNA Ring Motif with Flexible Joints [PDF]

open access: yesMicromachines, 2020
The invention of DNA origami has expanded the geometric complexity and functionality of DNA nanostructures. Using DNA origami technology, we develop a flexible multi-joint ring motif as a novel self-assembling module. The motif can connect with each other through self-complementary sequences on its segments.
Shiyun Liu   +2 more
openaire   +3 more sources

Vibration Prediction of the Robotic Arm Based on Elastic Joint Dynamics Modeling

open access: yesSensors, 2022
The flexibility of the joint drive system of an industrial robot can cause vibration at the end part, which can lead to motion errors. A method to predict the vibration during the motion of the robot arm is proposed considering the robot joint ...
Jianlong Li   +4 more
doaj   +1 more source

Flexible joint control : robustness analysis of the collocated and non-collocated feedbacks [PDF]

open access: yes, 1993
In this paper, we propose a discussion on the robustness and performance properties of a proportional-derivative controller applied to a very flexible joint.
Alazard, Daniel, Chrétien, Jean-Pierre
core   +1 more source

Design of a Variable Stiffness Joint Module to Quickly Change the Stiffness and to Reduce the Power Consumption

open access: yesIEEE Access, 2020
Variable stiffness actuators (VSA) are finding wide applications in robotics to enhance safety during interactions with stiff environments. Researchers have proposed various design architectures like antagonistic actuation, which requires both the motors
Nagamanikandan Govindan   +2 more
doaj   +1 more source

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