spacecraft attitude control system
Quaternion-based Finite-time Sliding Mode Controller Design for Attitude Tracking of a Rigid Spacecraft during High-thrust Orbital Maneuver in the Presence of Disturbance Torques
... the spacecraft in an initial orbit and then transferring it to the final one, which results in reducing the costs of ...on spacecraft attitude control ...the control systems robustness ...
8
De noising Spacecraft Attitude and Rate Data using DWT
... body attitude quaternion and body rates are preprocessed for noise using DWT, then the resulting image will be of good ...the control system designer of a spacecraft, so as to enable the ...
5
Robust control system for Spacecraft Motion Trajectory
... adaptive control approaches has been widely developed in aerospace ap- plications on the base of a large panel of ...an attitude adaptive control of satellites in el- liptic orbits is ...adaptive ...
15
High-Performance Robust Three-Axis Finite-Time Attitude Control Approach Incorporating Quaternion Based Estimation Scheme to Overactuated Spacecraft
... closed control loops including the inner and the outer ...the system, ...the system, ...time control (SMC), respectively, to provide the appropriate control torques, ...proposed ...
7
Preliminary Design of Spacecraft Attitude Control with Pulse-Width Pulse-Frequency Modulator for Rest-to-Rest Maneuvers
... the control system consists of a PD controller plus the PWPF ...the system considerations exert a fixed damping ratio of ...the system, when it operates in its linear range, resulting in the ...
8
Coupled orbit and attitude dynamics of a reconfigurable spacecraft with solar radiation pressure
... modular spacecraft of variable morphology to large gos- samer spacecraft 2, 3 ...reconfigurable spacecraft, the following roadmap defines a number of consecutive ...the system, starting with a ...
10
Model predictive control system design and implementation for spacecraft rendezvous
... quaternion-based attitude model to allow high precision control up until the final ...an attitude orientation is maintained so that the target is within the LIDAR’s field of ...
38
Autonomous GNC for asteroid deflection and attitude control via laser ablation
... GNC system is able to determine the relative acceleration between the spacecraft and the ...board system needs to estimate during laser operations, by two variables, which represent the dragging ...
15
Adaptive flault-tolerant control of spacecraft attitude dynamics with actuator failures
... Conventional attitude controllers such as quaternion feedback control are tuned assuming that the system works perfectly where the parameters and constraints of the system are known [8, ...
19
Frictionless Spacecraft Simulator With Unrestricted Three-Axis Movement For Nanosats
... the system introduced ...satellites attitude control simulator, which uses attitude sensors, an OBC, and gas thrusters as ...balancing system, using a set of three shifting masses and a ...
12
Multi-objective Optimization of Zero Propellant Spacecraft Attitude Maneuvers
... time-optimal attitude maneuver problems have been studied for decades, the ZPM OCP version differs in a number of respects that are now ...bounded control torque constraint, but is more complex since the ...
41
Integrable Hamiltonian systems defined on the Lie groups SO(3) and SU(2) : an application to the attitude control of a spacecraft
... left-invariant control systems defined on the Lie groups SU (2) and SO ...optimal control problem for a system varying on these Lie Groups, with cost that is quadratic in control is lifted to ...
7
Computationally light attitude controls for resource limited nano-spacecraft
... conventional spacecraft for specific missions ...these spacecraft have a number of limitations compared to larger spacecraft: a tendency to tumble post-launch; lower computational power in relation ...
10
Attitude Dynamics of Spacecraft with Control by Relocatable Internal Position of Mass Center
... At the fig.2-a we can see the complex phase-trajectory (in the framework of the classical mechanic it is called as “polhode”), which evolves in the time and proceeds to the Shilnikov’s attractor depicted separately at ...
5
Attitude control of large gossamer spacecraft using surface reflectivity modulation
... Gossamer spacecraft are ultra-lightweight structures which deploy large, thin reflective ...on-board attitude control systems need to be high-performance, reliable and importantly lightweight, this ...
9
Ground Based Laser Torque Effects on Both Passive and Active Control for LEO CubeSat
... active control for LEO ...of spacecraft attitude control problem is considered, in which passive control is performed by accounting only gravity gradient torque, and then active ...
7
Three Axis Attitude Control of RASAT by Magnetic Torquers
... magnetic attitude control has been largely investigated, but the focus has generally been the control of satellites meeting conditions of gravity gradient stability by either inertia parameters or ...
5
An efficient method to control the amplitude of the limit cycle in satellite attitude control system
... to control the satellite attitude with a predetermined accuracy and minimum fuel ...the control command and desired accuracy, an optimization problem is solved according to the constraints of the ...
15
A Study on Unmanned Surface Vehicle Combined with Remotely Operated Vehicle System
... The AUV has features of getting underwater terrain information and underwater object search. For high-speed / precision motion performance and long operation of the AUV, expensive navigation sensors and high-capacity ...
8
Investigating Miniaturized Electrodynamic Tethers for Picosatellites and Femtosatellites
... lower spacecraft in Fig. 3 is configured to collect electrons. In this system concept, electrons are collected by the picosat’s or femtosat ’ s positively biased (relative to the plasma potential) ...
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