Results 11 to 20 of about 213,618 (168)
Design of the RLG Current Stabilizer Circuit for Attitude Control in the Satellite [PDF]
Journal of Astronomy and Space Sciences, 2006 In this paper, we describe the RLG current stabilizer circuit for attitude control in the satellite. The RLG makes use of the Sagnac effect within a resonant of a HeNe laser.
Eui-Chan Kim, Jae-Dong Choi
doaj +1 more source
Attitude control of a tethered spacecraft
Proceedings of the 2003 American Control Conference, 2003., 2004 An attitude control problem for a tethered spacecraft is studied. The tethered spacecraft is viewed as a multi-body spacecraft consisting of a base body, a massless tether that connects the base body and an end mass, and tether actuator dynamics. Moments about the pitch and roll axes of the base spacecraft arise by control of the point of attachment of
Sangbum Cho, N. Harris McClamroch
openaire +2 more sources
IEEE Access, 2021 An artificial Earth satellite (AES) with three different principal central moments of inertia is under consideration. The AES moves along a Keplerian circular equatorial near-Earth orbit.
Alexander Aleksandrov +1 more
doaj +1 more source
A Novel Disturbance Rejection Control of Roll Channel for Small Air-to-Surface Missiles
Applied Sciences, 2022 In this paper, the issue of roll channel for attitude control for small air-to-surface missiles suffering from multiple disturbances is investigated. The dynamic model of roll channel is established and the roll controller of roll channel based on the ...
Xiaomiao Ding +3 more
doaj +1 more source
Error Dynamics Based Dual Heuristic Dynamic Programming for Self-Learning Flight Control
Applied Sciences, 2022 A data-driven nonlinear control approach, called error dynamics-based dual heuristic dynamic programming (ED-DHP), is proposed for air vehicle attitude control. To solve the optimal tracking control problem, the augmented system is defined by the derived
Xu Huang +5 more
doaj +1 more source
Path-Following Control for Unmanned Surface Vessel Using 1st System of Identified Unmanned Surface Vessel Dynamic Model and Path-Planning of Towed Unmanned Underwater Vehicles [PDF]
한국정밀공학회지, 2022 This paper proposes a simplified path-following control method for an Unmanned Surface Vessel (USV) considering towed Unmanned Underwater Vehicles (UUV).
Pyung Mo Ku, Jae Kwan Ryu, Won Hee Lee
doaj +1 more source
Steering law considering biased loads for control moment gyroscopes
Mechanical Engineering Journal, 2015 A new steering law of a pyramid configuration of four control moment gyroscopes (CMGs) is proposed to suppress radical motion of gimbals, reduce the gimbal angular displacement and level the biased ones of the four CMGs.
Yasuyuki NANAMORI, Masaki TAKAHASHI
doaj +1 more source
Hybrid Quasi-Optimal PID-SDRE Quadrotor Control
Energies, 2022 In the paper, a new cascade control system for an autonomous flight of an unmanned aerial vehicle (UAV) based on Proportional–Integral–Derivative (PID) and finite-time State-Dependent Riccati Equation (SDRE) control is proposed.
Wojciech Giernacki +3 more
doaj +1 more source
IEEE Access, 2020 This article investigates the trajectory tracking problem of quadrotor formation with collision avoiding. The safety distributed control strategy is introduced for quaternion-based multiple quadrotors formation to avoid collision.
Guowei Zhang +4 more
doaj +1 more source
Attitude Control of Two-Wheel Spacecraft Based on Dynamics Model via Hierarchical Linearization
SICE Journal of Control, Measurement, and System Integration, 2017 In this paper, we propose an attitude control law for underactuated two-wheel spacecraft under non-zero total angular momentum. Attitude control with non-zero total angular momentum is complicated in the case that the number of reaction wheels equipped ...
Tomohiro Fukaishi +2 more
doaj +1 more source