Results 31 to 40 of about 3,165,810 (309)
Continuous Fixed-Time Sliding Mode Attitude Controller Design for Rigid-Body Spacecraft
IEEE Access, 2020 Fast and high-precision attitude control for the rigid spacecraft is important for its broad applications in astronautics. In this paper, we address this problem via continuous nonsingular fixed-time sliding mode control approach.
Lei Wang, Zhuoyue Song
doaj +1 more source
Prespecifiable fixed‐time control for uncertain nonlinear system with input quantization
IET Control Theory & Applications, 2023 This paper focuses on the global prespecifiable fixed‐time control problem of uncertain strict‐feedback nonlinear system with input quantization. In contrast to the existing fixed‐time control results, the signs of the control gains can be unknown in our
Yang Gao +4 more
doaj +1 more source
Understanding fixed effects in human well-being [PDF]
, 2009 In studies of subjective well-being, economists and other researchers typically use a fixed or random effect estimation to control for unobservable heterogeneity across individuals.
Boyce, Christopher J. +2 more
core +1 more source
A Robust Fixed-Time Sliding Mode Control for Quadrotor UAV
Algorithms, 2023 This paper proposes a robust algorithm based on a fixed-time sliding mode controller (FTSMC) for a Quadrotor aircraft. This approach is based on Lyapunov theory, which guarantees system stability.
Jairo Olguin-Roque +3 more
doaj +1 more source
Fixed-Time Parameter Adaptation for Safe Control Synthesis
CoRR, 2022 This paper introduces a parameter adaptation-based control law for a class of nonlinear, control-affine, safety-critical systems subject to additive, parameter-affine model uncertainty. It is shown that the uncertainty is learned in fixed-time, i.e., within a finite time independent of the initial parameter estimates, without requiring persistence of ...
Mitchell Black 0001 +2 more
openaire +2 more sources
Journal of Marine Science and EngineeringThis paper proposes a fixed-time prescribed performance control technique to address the challenge of precise trajectory tracking control for unmanned surface vessels (USVs) in the presence of external time-varying disturbances and input saturation.
Bowen Sui +3 more
doaj +1 more source
Fixed-Time Homogeneous Integral Controller
IFAC-PapersOnLine, 2018 Abstract We propose a homogeneous integral controller with positive homogeneity degree, for systems with relative degree two and three. Its design and the convergence proof is achieved by the construction of an explicit homogenous Lyapunov function. A combination of this controller, with a discontinuous one developed by the authors in a previous work,
Angel Mercado-Uribe, Jaime A. Moreno
openaire +1 more source
Fixed‐time fault‐tolerance attitude tracking control for spacecraft without unwinding
IET Control Theory & Applications, 2023 In this paper, the attitude tracking control problem is investigated for rigid spacecraft subjected to external disturbance, inertia uncertainties, and actuator faults. The rotation matrix is used to model the spacecraft attitude control system which can
Q. Huang, Y. Zhang
doaj +1 more source
Fixed-time consensus based cooperative control for multi-agent systems
, 2017 Multi-agent systems have offered advantages such as robustness and energy saving due to the capability to cooperatively fulfil complex tasks. One fundamental research topic of cooperative control is consensus, which designs distributed controllers to ...
Boda Ning (18926215)
core +1 more source
Fixed-Time Control of a Robotic Arm Based on Disturbance Observer Compensation
, 2023 Backstepping-based fixed-time tracking control is proposed for a robotic arm system to solve the problem of trajectory tracking control under system uncertainties, which ensures the robotic arm system can realize stable tracking control within a fixed ...
Gang Zhang +4 more
core +1 more source