Results 31 to 40 of about 38,287 (305)

Pattern transition in spacecraft formation flying using bifurcating potential field [PDF]

open access: yes, 2012
Many new and exciting space mission concepts have developed around spacecraft formation flying, allowing for autonomous distributed systems that can be robust, scalable and flexible.
Bennet, Derek James, McInnes, Colin
core   +1 more source

Consensus Based Platoon Algorithm for Velocity-Measurement-Absent Vehicles with Actuator Saturation

open access: yesJournal of Advanced Transportation, 2017
We investigate the vehicle platoon problems, where the actuator saturation and absent velocity measurement are taken into consideration. Firstly, a novel algorithm, where a smooth function is introduced to deal with the sharp corner of the input signals,
Maode Yan, Ye Tang, Panpan Yang, Lei Zuo
doaj   +1 more source

Integrated Adaptive Steering Stability Control for Ground Vehicle with Actuator Saturations

open access: yesApplied Sciences, 2022
During a steering manoeuvre in a ground vehicle, both yaw motion and roll motion can occur simultaneously, and their dynamics can be coupled, as the roll motion is generalized directly from the tires’ lateral force under steering.
Jinhua Zhang, Mingyu Wang
doaj   +1 more source

Compensated Current Injection circuit, theory and applications [PDF]

open access: yes, 2002
This paper presents a detailed description, analysis and example of practical application of a wide frequency band voltage-to-current converter. The converter is characterized by a combination of positive and negative feedback loops.
Giorgio Fontana   +3 more
core   +2 more sources

Continuous phase amplification with a Sagnac interferometer [PDF]

open access: yes, 2009
We describe a weak value inspired phase amplification technique in a Sagnac interferometer. We monitor the relative phase between two paths of a slightly misaligned interferometer by measuring the average position of a split-Gaussian mode in the dark ...
Dixon, P. Ben   +4 more
core   +3 more sources

Design of adaptive PID anti-saturation controller in switchover process of mine ventilator

open access: yesGong-kuang zidonghua, 2019
In view of actuator saturation problem in switchover process of mine ventiliator, an adaptive PID anti-saturation controller was designed based on combination of variable structure PID anti-saturation control and nonlinear adaptive control.
SUN Tao, XIA Zhenxing, WANG Qianjin
doaj   +1 more source

Stroke saturation on a MEMS deformable mirror for woofer-tweeter adaptive optics

open access: yes, 2009
High-contrast imaging of extrasolar planet candidates around a main-sequence star has recently been realized from the ground using current adaptive optics (AO) systems. Advancing such observations will be a task for the Gemini Planet Imager, an upcoming "
Bruce Macintosh   +30 more
core   +1 more source

Influence of an aperture on the performance of a two-degree-of-freedom iron-cored spherical permanent-magnet actuator [PDF]

open access: yes, 2002
—This paper describes a computational and experimental study of a two-degree-of-freedom spherical permanent-magnet actuator equipped with an iron stator.
Bingham, Chris   +4 more
core   +1 more source

Flight control system design with rate saturating actuators [PDF]

open access: yes21st Atmospheric Flight Mechanics Conference, 1996
Actuator rate saturation is an important factor adversely affecting the stability and performance of aircraft flight control systems. It has been identified as a catalyst in pilot-induced oscillations, some of which have been catastrophic. A simple design technique is described that utilizes software rate limiters to improve the performance of control ...
Hess, R. A., Snell, S. A.
openaire   +2 more sources

Transfer of Energy and Momentum Between Magnetoactive Surface Microstructure and a Solid Object

open access: yesAdvanced Engineering Materials, EarlyView.
We demonstrate that magnetoactive multilamellar arrays subjected to a rotating magnetic field can function as platforms for controlled transport of physical objects. Through systematic experimental investigation, we elucidate the underlying physical mechanisms determining the upper limit of the achievable transportation speed in such magnetic “conveyor‐
Arne Geldof   +9 more
wiley   +1 more source

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