Spacecraft attitude control
Earth’s Magnetic Field for Spacecraft Attitude Control Applications (TECHNICAL NOTE)
... In this paper the earth’s magnetic field is simulated precisely while the intensity and direction of the field are verified with one of the standard references for selected points on the earth and the results are ...
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Preliminary Design of Spacecraft Attitude Control with Pulse-Width Pulse-Frequency Modulator for Rest-to-Rest Maneuvers
... specified attitude command and predetermined spacecraft specifications ...i.e. attitude command, thruster torque, and spacecraft moment of inertia - the optimization must be ...of ...
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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 ...
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Robust Attitude Control of Spacecraft Simulator with External Disturbances
... The spacecraft attitude control subsystem simulator consists of a platform, an air-bearing and a set of four reaction ...rotation. Spacecraft simulators are applied in upgrading and checking ...
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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 ...
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Robust control system for Spacecraft Motion Trajectory
... in control theory ...robust control approaches to preserve the advantages of the both methods while overcoming their ...for spacecraft the approach that has been developed in [9] was implied to ...
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Parameter Governors for Coordinated Control of n Spacecraft Formations
... Remark 2: Due to the state-feedback nature of the nominal controller [Eq. (4)], sufficiently small disturbances are naturally accommodated. It is expected that bounded disturbances may be incorporated into the ...
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Coupled orbit and attitude dynamics of a reconfigurable spacecraft with solar radiation pressure
... and attitude dynamics of future reconfigurable multi-panel solar sails able to change their shape during a ...modular spacecraft of variable morphology to large gossamer ...
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Vibration Control of Flexible Spacecraft Using Adaptive Controller
... vibration control of flexible spacecraft by adaptive ...flexible spacecraft as a coupled hybrid dynamics of rigid body motion and the flexible arm ...accurately control the vibration of ...
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An application of adaptive fault-tolerant control to nano-spacecraft
... the control law can respond by adaptive ...fault-tolerant control method, presented here, is a modification of the traditional quaternion feedback control ...the control feedback input when ...
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CONTROL STRATEGY OF MULTIROTOR PLATFORM UNDER NOMINAL AND FAULT CONDITIONS USING A DUAL-LOOP CONTROL SCHEME USED FOR EARTH- BASED SPACECRAFT CONTROL TESTING
... Validation of the control scheme and quadrotor platform is discussed in this chapter. Recall that the quadrotor is not autonomous and is flown using a radio controller. Thus, considera- tions are given to ensure ...
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Partially Invariant System for Spacecraft Center of Mass Motion Stabilization
... Abstract This publication suggests how we can improve the spacecraft centre of mass movement stabilization accuracy in the active phases of trajectory correction. It will be during interplanetary and transfer ...
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Simplified Filtering Estimator for Spacecraft Attitude Determination from Phase Information of GPS Signals
... of attitude estimations from simulated data and flight data were proven that the implemented sEKF estimator provides remarkable results compared to reference ...provided attitude information within 1 degree ...
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Attitude control of quadrotor
... Quad-rotor is an object that can be categorized as Unmanned Air Vehicle (UAV). It uses a similar concept with helicopters but propelled by using four motors and four propellers. Its lift and motion are supported by all ...
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A spline wavelet collection method for the optimal control of flexible spacecraft
... Wavelet multi-resolution approximation should be a desirable way to solve OCP with discontinuities or switching in the control variables. As a novel attract- ive numerical technique, wavelet multi-resolution ...
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Optimal Control for Spacecraft Large Angle Maneuvers Using H infinity Linear Varying Parameter Control Techniques
... the control block. The control block code control3 temp can be seen in Appendix ...The control block has five user inputs, and of course the input from the plant ...The control code has two ...
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A quaternion-based attitude tracking controller for robotic systems
... quaternion-based control law stems from both an associated control-Lyapunov function defined on the rotation group Biggs, ...a control-Lyapunov function defined in terms of the angular velocity error ...
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Nonlinear observers for attitude estimation in gyroless spacecraft via Extended Kalman filter algorithm
... the attitude of a spacecraft based on a sequence of noisy vector observations such as ...satellite attitude estimation ...for attitude estimation for the Apollo space program in ...satellite ...
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De noising Spacecraft Attitude and Rate Data using DWT
... satellite attitude and rate data using discrete wavelet transform is ...the spacecraft, and then downloaded using a Radio Frequency ...The attitude quaternion and body rates are part of the down ...
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Attitude control of large gossamer spacecraft using surface reflectivity modulation
... Gossamer Spacecraft Forum, April 19, 2004 - April 22, 2004, volume 1 of Collection of Technical Papers - AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics and Materials Conference, pages ...
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