Results 31 to 40 of about 213,618 (168)

Fault-tolerant attitude control systems for spacecraft equipped with control moment gyros

open access: yesNihon Kikai Gakkai ronbunshu, 2015
This paper proposes a design method of the fault-tolerant attitude control system for spacecraft. In recent years, there has been requirement for accurate and agile attitude control of spacecraft.
Ai NOUMI, Masaki TAKAHASHI
doaj   +1 more source

Large-Scale Solar-Powered UAV Attitude Control Using Deep Reinforcement Learning in Hardware-in-Loop Verification

open access: yesDrones
Large-scale solar-powered unmanned aerial vehicles possess the capacity to perform long-term missions at different altitudes from near-ground to near-space, and the huge spatial span brings strict disciplines for its attitude control such as aerodynamic ...
Yongzhao Yan   +5 more
doaj   +1 more source

CONTROLLING ATTITUDES

open access: yesPacific Philosophical Quarterly, 2006
Abstract:  I hope to show that, although belief is subject to two quite robust forms of agency, “believing at will” is impossible; one cannot believe in the way one ordinarily acts. Further, the same is true of intention: although intention is subject to two quite robust forms of agency, the features of belief that render believing less than voluntary ...
openaire   +3 more sources

Physical Implementation and Experimental Validation of the Compensation Mechanism for a Ramp-Based AUV Recovery System

open access: yesJournal of Marine Science and Engineering
In complex marine environments, ramp-based recovery systems for autonomous underwater vehicles (AUVs) often encounter engineering challenges such as reduced docking accuracy and success rate due to disturbances in the capture window attitude.
Zhaoji Qi   +5 more
doaj   +1 more source

Attitude Control of UAVs with Search Optimization and Disturbance Rejection Strategies

open access: yesMathematics, 2023
This study aims to achieve rapid and stable control of quadrotor unmanned aerial vehicles’ (UAVs) attitude by using an Active Disturbance Rejection Control (ADRC) controller.
Wensheng Li   +5 more
doaj   +1 more source

Adaptive Control of Mini Space Robot Based on Linear Separation of Inertial Parameters

open access: yesAerospace, 2023
Space robots exhibit a strong dynamic coupling between the manipulator and the base spacecraft, with this phenomenon being particularly pronounced in mini space robots.
Yuchen Liu, Lai Teng, Zhonghe Jin
doaj   +1 more source

Reconfigurable Nonlinear Dynamic Inversion for Attitude Control of a Structurally Damaged Aircraft

open access: yesIEEE Access, 2020
Structural damage induces extensive parameter changes of an aircraft, which leads to the mismatch problem between the offline model and a flying aircraft.
Qizhi He   +4 more
doaj   +1 more source

Prescribed Performance Fault-Tolerant Attitude Tracking Control for UAV with Actuator Faults

open access: yesDrones
This paper proposes a prescribed performance fault-tolerant control based on a fixed-time extended state observer (FXTESO) for a carrier-based unmanned aerial vehicle (UAV). First, the attitude motion model of the UAV is introduced.
Qilong Wu, Qidan Zhu
doaj   +1 more source

Incremental Nonlinear Dynamic Inversion Considering Centroid Variation Control for Reusable Launch Vehicles

open access: yesAerospace
For the diverse payloads of Reusable Launch Vehicles and the inevitable problem of change in the center of mass, this paper proposes an incremental nonlinear dynamic inversion considering centroid variation control.
Qiushi Tang, Jiahao Gan, Yuanpeng Fang
doaj   +1 more source

Development of an Air-Bearing Testbed for Nanosatellite Attitude Determination and Control Systems

open access: yesIEEE Access
A testbed that simulates space conditions in a terrestrial laboratory is essential for evaluating, verifying, and teaching attitude control in nanosatellites.
Pablo Raul Yanyachi   +3 more
doaj   +1 more source

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