Results 61 to 70 of about 297,175 (241)

Vision‐Assisted Avocado Harvesting with Aerial Bimanual Manipulation

Advanced Robotics Research, EarlyView.
This work outlines the design and implementation of a bimanual aerial robot that employs visual perception and learning to detect, reach, and harvest avocados. A new gripper and fixer arm assembly is used to harvest avocados, while visual perception enables the detection of avocados and estimation of their position and orientation for determining ...
Zhichao Liu, Jingzong Zhou, Caio Mucchiani, Konstantinos Karydis   +3 more
wiley   +1 more source

Optimal Over-Frequency Droop Control for DFIG-Based Wind Farms Under Unreliable Communication

CSEE Journal of Power and Energy Systems
Nowadays, high penetration of wind power is integrated into power grids, and WTs usually adopt the MPPT algorithm to maximize power output, which decouples the rotor speeds of wind turbines (WTs) and system frequency.
Yaxin Wang, Donglian Qi, Jianliang Zhang, Yulin Chen   +3 more
doaj   +1 more source

Collision‐Resilient Winged Drones Enabled by Tensegrity Structures

Advanced Robotics Research, EarlyView.
Based on structures of birds such as the woodpeck, this article presents the collision‐resilient aerial robot, SWIFT. SWIFT leverages tensegrity structures in the fuselage and wings which allow it to undergo large deformations in a crash, without sustaining damage. Experiments show that SWIFT can reduce impact forces by 70% over conventional structures.
Omar Aloui, Raphael Zufferey, William Stewart, Mohammad Askari, Simon Jeger, Dario Floreano   +5 more
wiley   +1 more source

Motion Control Dynamics of Transport Vehicle on Long Descents

Механика машин, механизмов и материалов
The article provides a rationale for the need to develop an additional braking control system for a transport vehicle to limit the movement speed under the action of rolling forces and to protect the engine from exceeding the permissible speed ...
Victor B. Derzhanskii, Igor A. Taratorkin, Alexander A. Volkov   +2 more
doaj   +1 more source

Torque for an Inertial Piezoelectric Rotary Motor

The Scientific World Journal, 2013
For a novel inertial piezoelectric rotary motor, the equation of the strain energy in the piezoceramic bimorph and the equations of the strain energy and the kinetic energy in the rotor are given.
Jichun Xing, Lizhong Xu
doaj   +1 more source

Thermal Behavior of a Magnetically Levitated Spindle for Fatigue Testing of Fiber Reinforced Plastic

Actuators, 2019
This article discusses the critical thermal behavior of a magnetically levitated spindle for fatigue testing of cylinders made of fiber reinforced plastic. These cylinders represent the outer-rotor of a kinetic energy storage.
Daniel Franz, Maximilian Schneider, Michael Richter, Stephan Rinderknecht   +3 more
doaj   +1 more source

Geometric Mechanics, Stability and Control [PDF]

, 1994
This paper gives an overview of selected topics in mechanics and their relation to questions of stability, control and stabilization. The mechanical connection, whose holonomy gives phases and that plays an important role in block diagonalization ...
Marsden, Jerrold E.
core   +1 more source

TreeSpider: In‐Canopy Exploration With Tether‐Based Aerial Modular Arms

Advanced Robotics Research, EarlyView.
A tethered drone with perching arms and a 360° ring enables unprecedented maneuverability within dense forest canopies. By dynamically adjusting tether length and decoupling pitch from the frame, it navigates between branches, senses multiple trees, and interacts physically with foliage.
Luca Romanello, Tian Lan, Salaheldin Hassan, Maximilian Leutschafft, Erdem Ekinci, Sophie F. Armanini, Mirko Kovac, Basaran Bahadir Kocer   +7 more
wiley   +1 more source

Inertia Support Strategy for Wind Turbine Based on Switched Operating Points With Equivalent Time Constant

IEEE Access
The wind Turbine adopts Virtual Synchronous Generator (VSG) control to support grid frequency by releasing their energy reserve. However, the interaction between the maximum power point tracking (MPPT) control and VSG control will weaken their inertia ...
Jin Li, Ting An, Yuehong Zhou, Haiyan Zhao   +3 more
doaj   +1 more source

Determining kinetic energy distribution of the working medium in a centrifugal disc finishing process—part 1: theoretical and numerical analysis with DEM method

The International Journal of Advanced Manufacturing Technology, 2019
The centrifugal disc finishing process is an abrasive technique of mass machining, and it is very effective but very frequently time consuming. In this paper, a simulation of the centrifugal disc finishing process was presented in order to estimate the ...
P. Sutowski, J. Plichta, P. Kałduński
semanticscholar   +1 more source