Results 51 to 60 of about 1,814,382 (210)

Quadrotor Attitude Control by Fractional-Order Fuzzy Particle Swarm Optimization-Based Active Disturbance Rejection Control

Applied Sciences, 2021
In this paper, Active Disturbance Rejection Control (ADRC) is utilized in the attitude control of a quadrotor aircraft to address the problem of attitude destabilization in flight control caused by parameter uncertainties and external disturbances ...
Qi Zhang, Yaoxing Wei, Xiao Li
doaj   +1 more source

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

IEEE 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, Alfredo Mamani-Saico, Xinsheng Wang, Brayan Espinoza-Garcia   +3 more
doaj   +1 more source

Attitude ground support system for the solar maximum mission spacecraft [PDF]

, 1980
The SMM attitude ground support system (AGSS) supports the acquisition of spacecraft roll attitude reference, performs the in-flight calibration of the attitude sensor complement, supports onboard control autonomy via onboard computer data base updates ...
Nair, G.
core   +1 more source

Integrated Suboptimal Guidance and Control for Lunar Pinpoint Soft Landing

Kongzhi Yu Xinxi Jishu, 2019
It proposed an integrated guidance and control method for lunar pinpoint soft landing to deal with the mismatch between the guidance system and control system in conventional separating design philosophy.
ZHANG Bo, CAI Yuanli
doaj  

Height and attitude tracking control of an unmanned helicopter via a HDOB-backstepping composite control method

The Journal of Engineering, 2019
This study studies the height and attitude tracking control problem of an unmanned helicopter system with disturbances. A composite controller based on the combination of harmonic disturbance observers and backstepping technique is proposed to achieve ...
Ling Han, Xiangyu Wang, Shihua Li, Jiyu Liu   +3 more
doaj   +1 more source

Attitude control system for sounding rockets Patent [PDF]

, 1966
Development of attitude control system for sounding rocket stabilization during ballistic phase of ...
Robbins, H. J., Zebrowski, Z. E.
core   +1 more source

Coaxial Helicopter Attitude Control System Design by Advanced Model Predictive Control under Disturbance

Aerospace
This paper proposes an advanced model predictive control (MPC) scheme for the attitude tracking of coaxial drones under wind disturbances. Unlike most existing MPC setups, this scheme embeds steady-input, steady-output, and steady-state conditions into ...
Zhi Chen, Xiangyu Lin, Wanyue Jiang
doaj   +1 more source

Adaptive flight control for unmanned autonomous helicopter with external disturbance and actuator fault

The Journal of Engineering, 2019
A backstepping-based robust adaptive fault tolerant control (FTC) scheme is proposed for the altitude and attitude dynamic model of the medium-scale unmanned autonomous helicopter (UAH) subjected to external disturbance and actuator fault.
Kun Yan, Mou Chen, Qingxian Wu, Yuhui Wang   +3 more
doaj   +1 more source

Attitude control and damping system for spacecraft Patent [PDF]

, 1967
Utilization of momentum devices for forming attitude control and damping system for ...
Kurzhals, P. R., Will, R. W.
core   +1 more source

Experimental Nonlinear and Incremental Control Stabilization of a Tail-Sitter UAV with Hardware-in-the-Loop Validation

Robotics
Tail-sitters aim to combine the advantages of fixed-wing aircraft and rotorcraft but require a robust and fast stabilization strategy to perform vertical maneuvers and transitions to and from aerodynamic flight.
Alexandre Athayde, Alexandra Moutinho, José Raúl Azinheira   +2 more
doaj   +1 more source