Results 61 to 70 of about 22,618 (229)

Analyzing and Optimizing Multibody Systems [PDF]

Mechanics of Structures and Machines, 1992
Optimization of holonomic as well as non-holonomic multibody systems is presented as a nonlinear programming problem that can be solved with general-purpose optimization codes. The adjoint variable approach is used for calculating design derivatives of a rather general integral type performance measure with respect to design parameters.
Bestle, Dieter, Eberhard, Peter
openaire   +3 more sources

The Challenges and Achievements of Experimental Implementation of an Active Transfemoral Prosthesis Based on Biological Quasi-Stiffness: The CYBERLEGs Beta-Prosthesis

Frontiers in Neurorobotics, 2018
The CYBERLEGs Beta-Prosthesis is an active transfemoral prosthesis that can provide the full torque required for reproducing average level ground walking at both the knee and ankle in the sagittal plane. The prosthesis attempts to produce a natural level
Louis Flynn, Joost Geeroms, Rene Jimenez-Fabian, Sophie Heins, Bram Vanderborght, Marko Munih, Raffaele Molino Lova, Nicola Vitiello, Nicola Vitiello, Dirk Lefeber   +9 more
doaj   +1 more source

Stair‐Climbing Wheelchairs for Enhanced Mobility: A Comprehensive Review of Fundamental Mechanisms, Design Concepts, and Performance Analysis

Journal of Field Robotics, EarlyView.
ABSTRACT People with physical disabilities face significant mobility challenges while climbing uneven surfaces and staircases. In these circumstances, traditional wheelchairs do not provide stable, safely controlled mobility, underscoring the importance of building superior stair‐climbing wheelchairs for both medical and infrastructure purposes.
Gopisetti Manikanta, S. M. Abhinandan, Anand Reddy, G. Chandana, Divya, P. Anil Kumar, Ch. Venkata Rao, Ashish Garg, Ravi C. Soni, Jogendra Kumar, Bhargav Akkinepally   +10 more
wiley   +1 more source

On the Modeling of Shells in Multibody Dynamics [PDF]

Volume 6A: 18th Biennial Conference on Mechanical Vibration and Noise, 2001
Abstract Energy preserving/decaying schemes are presented for the simulation of the nonlinear multibody systems involving shell components. The proposed schemes are designed to meet four specific requirements: unconditional nonlinear stability of the scheme, a rigorous treatment of both geometric and material non-linearities, exact ...
O. A. Bauchau, J. Y. Choi, BOTTASSO, CARLO LUIGI   +2 more
openaire   +3 more sources

Control design for an under-actuated UAV model [PDF]

FME Transactions, 2018
Unmanned Aerial Vehicles (UAV), are increasingly being adapted and used in civil contexts, with particular specialization in the monitoring of the territory for environmental purposes, civil protection or possibly control and inspection of inaccessible ...
De Simone M.C., Guida D.
doaj  

Hexapod Locomotion Across Structured and Unstructured Terrains: A Data‐Driven Review of Modeling, Control, and Validation

Journal of Field Robotics, EarlyView.
ABSTRACT The design of a hexapod is complex and requires integration between kinematic models, control systems, and sensing. Existing literature has reviewed these sub‐systems in isolation. Since 2021, there has been no review of the field despite significant advancements in soft soil, lunar traversal, and artificial intelligence.
Akhil Rampersad, Bashan Naidoo
wiley   +1 more source

Active Damping of Railway Carbody Vibrations with Piezoelements [PDF]

, 2004
This paper presents a methodology for the simulation and control of smart structures with piezoceramic patches by means of multibody dynamics. A theoretical background is mentioned adapting a modal multifield approach.
Heckmann, Andreas, Vaculin, Ondrej
core  

Design of a Large Deployable Reflector Opening System

Machines, 2020
Large Deployable Reflectors (LDR) are receiving considerable attention from aerospace government companies and researchers. In this paper, the design of the opening system of a LDR is presented.
Alessandro Cammarata, Rosario Sinatra, Alessio Rigano, Mattia Lombardo, Pietro Davide Maddio   +4 more
doaj   +1 more source

Unraveling authoritarian reform decision‐making: A metacognitive–subcognitive model

American Journal of Political Science, EarlyView.
Abstract Recent research indicates that state reforms in East and Southeast Asia have been predominantly top‐down and authoritarian‐led. However, this significant observation implicitly relies on important assumptions about authoritarian decision‐making behavior and psychology that remains understudied.
Eugene Yu Ji
wiley   +1 more source

Research on Dynamic Modeling and Control of Magnetorheological Hydro-Pneumatic Suspension

Actuators
A novel magnetorheological semi-active hydro-pneumatic suspension system was proposed to overcome the shortcoming of the traditional hydro-pneumatic suspension without adaptive vibration damping function. It is based on the magnetorheological semi-active
Yuansi Chen, Min Jiang, Fufeng Yang, Ruijing Qian, Rongjie Zhai, Hongliang Wang, Shaoqing Xv   +6 more
doaj   +1 more source