Results 81 to 90 of about 2,057 (208)

An Aerial Robot Achieving Bimodal Flight and Independent Attitude Control through Passive Morphing

open access: yesAdvanced Intelligent Systems, Volume 7, Issue 7, July 2025.
This article presents a bimodal aerial robot capable of operating in both standard quadcopter and revolving flight modes. With four rotors, it independently controls position and roll‐pitch attitude across five degrees of freedom. The design features passive revolute joints, allowing seamless mid‐air transitions between modes using centrifugal forces ...
Jihao Xu, Pakpong Chirarattananon
wiley   +1 more source

Manipulation of free-floating objects using Faraday flows and deep reinforcement learning

open access: yesScientific Reports, 2022
The ability to remotely control a free-floating object through surface flows on a fluid medium can facilitate numerous applications. Current studies on this problem have been limited to uni-directional motion control due to the challenging nature of the ...
David Hardman   +2 more
doaj   +1 more source

Advancing Stability in Robot Manipulators: A Review of Recent Progress and Parameters

open access: yesEngineering Reports, Volume 7, Issue 7, July 2025.
We present an overview of the current state‐of‐the‐art in robotics while emphasizing stability and control aspects with pragmatic consideration over robotic manipulators. It is centered on robustness, efficiency, and security for applications such as industrial automation or surgical robotics.
Shabnom Mustary   +4 more
wiley   +1 more source

Quadcopter Aggressive Maneuvers along Singular Configurations: An Energy-Quaternion Based Approach

open access: yesJournal of Control Science and Engineering, 2016
Automatic aggressive maneuvers with quadcopters are regarded as a highly challenging control problem. The aim is to tackle the singularities that exist in a vertical looping maneuver. Modeling singularities are resolved by writing the equations-of-motion
Ayman A. El-Badawy, Mohamed A. Bakr
doaj   +1 more source

Control of a Bicycle Using Virtual Holonomic Constraints

open access: yes, 2013
The paper studies the problem of making Getz's bicycle model traverse a strictly convex Jordan curve with bounded roll angle and bounded speed. The approach to solving this problem is based on the virtual holonomic constraint (VHC) method.
Consolini, Luca, Maggiore, Manfredi
core   +1 more source

A Review of Modeling and Control Techniques for Unmanned Aerial Vehicles

open access: yesEngineering Reports, Volume 7, Issue 6, June 2025.
By systematically classifying UAV modeling techniques and comparing control methods, this paper addresses a notable gap in the current literature. Furthermore, it highlights emerging trends and challenges in UAV control systems, providing valuable insights to guide future research toward enhancing the stability, efficiency, and adaptability of ...
Elisabeth Andarge Gedefaw   +2 more
wiley   +1 more source

NONLINEAR H∞ CONTROLLERS FOR UNDERACTUATED COOPERATIVE MANIPULATORS

open access: yesIFAC Proceedings Volumes, 2005
SUMMARYIn this paper, two nonlinear $\mathcal{H}_{\infty}$ control techniques are used to solve the position control problem of underactuated cooperative manipulators. The first technique consists in representing the nonlinear system in a quasi-linear parameter varying form and the solution is given in terms of linear matrix inequalities.
A. A. G. Siqueira, M. H. Terra
openaire   +1 more source

Robust Output Feedback MPC of Antagonistic Pneumatic Artificial Muscle System

open access: yesIET Control Theory &Applications, Volume 19, Issue 1, January/December 2025.
The configuration of the antagonistic pneumatic artificial muscle (APAM) system is illustrated in Figure 2. The APAM platform primarily consists of PAM1, PAM2, a force sensor, a displacement sensor, a pressure sensor, and a control PC. The two PAMs are mechanically linked via a chain.
Huixing Yan   +3 more
wiley   +1 more source

A Toolbox for the Analysis of the Grasp Stability of Underactuated Fingers

open access: yesRobotics, 2019
In the design of humanoid robotic hands, it is important to evaluate the grasp stability, especially when the concept of underactuation is involved. The use of a number of degrees of actuation lower than the degrees of freedom has shown some advantages ...
Giovanni Antonio Zappatore   +2 more
doaj   +1 more source

Manoeuvrability Limitation‐Based Flight Control for Unmanned Autonomous Helicopter With State Constraints and Input Saturation

open access: yesIET Control Theory &Applications, Volume 19, Issue 1, January/December 2025.
To address the challenge of unmanned autonomous helicopter manoeuvring flight under multiple constraints, this study proposes a fully actuated auxiliary system‐based safe flight control strategy. The saturation‐like smooth function is introduced to enable smooth transition of commands near constraint boundaries.
Min Wan, Kenan Yong
wiley   +1 more source

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