Controllability analysis and attitude path planning of underactuated spacecraft systems

Zhang, Jiawei; Ma, Kemao; Meng, Guizhi

doi:10.1016/j.ast.2014.01.003

Cited by 12 publications

(2 citation statements)

References 19 publications

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“…Authors of Sun et al [Sun and Fang, 2014] proposed online trajectory planning by incorporating swing-damping terms in a smooth trolley trajectory generation for swing elimination and precise trolley positioning. Authors in Zhang et al [J. Zhang, Ma, and Meng, 2014] proposed attitude path planning for underactuated spacecraft using two flywheels as actuators.…”

Section: Underactuated Systemsmentioning

confidence: 99%

Nonlinear Attitude Control Of Underactuated Spacecraft

Frias¹

2021

Preprint

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This dissertation investigates the nonlinear control of the attitude for an underactuated rigid-body spacecraft system in the body-orbital and inertial frames. The problem involving the stabilization of the body-orbital attitude of an underactuated output-feedback system is examined. Using sliding mode control in conjunction with finite-time nonlinear observer, a novel observer-based control law is rigorously analyzed and proven to achieve attitude convergence. Under time-varying disturbances, inertia matrix uncertainties, and high initial errors, the proposed novel law achieves attitude convergence for three-axis stability and ultimate boundedness within 5 degrees and 0.01 deg/s, for attitude error norm and angular velocity norm, respectively. Next, the attitude control problem is rigorously analyzed in the inertial frame, where the underactuated rigid-body spacecraft system equations of motion are highly nonlinear, and the linearized equations of motion are not controllable. To this end, a generalized velocity-free time-varying state feedback controller is developed to achieve globally exponential stability with respect to the homogenous norm and proven to provide ultimate boundedness of all signals with 5 degrees attitude error norm and 0.5 rad/s angular velocity error norm. Finally, the inertial frame attitude stabilization problem is treated as an optimal control problem. For this case, the Legendre pseudospectral method is used to discretized the spacecraft dynamics into Legendre-Gauss-Lobatto (LGL) node points, where the Lagrange polynomial interpolation is applied to obtain a suitable candidate optimal control sequence. Model predictive control is used to implement the optimal control in predefined control windows sequentially to achieve three-axis stability for a rest-to-rest maneuver within 0.3 orbit.

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Section: Underactuated Systemsmentioning

confidence: 99%

Nonlinear Attitude Control Of Underactuated Spacecraft

Frias¹

2021

Preprint

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“…However, a single absorbing material is difficult to achieve multi-band and wideband absorption effect. Doping is one of the effective ways broaden the band and increase the frequency band [5]. Rare earth elements is a kind of having the unpaired 4f electrons shielded by the outermost electrons, so their atoms and ions have a special electromagnetic properties [6].…”

Section: Introductionmentioning

confidence: 99%

Study on Cerium Doped Flower-Like ZnO Microcrystaline Preparation and its Microwave Absorbing Properties

Wang¹,

Zhang

Mao

et al. 2013

AMR

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Hydrothermal method was used to prepare Ce doped ZnO. Effects of doping ratio, reaction time, reaction temperature, filling degree on the flower-like morphology of ZnO were studied. And the phase, morphology and size of the products were characterized by XRD and SEM. The vector network analyzer was used to characterize the products electromagnetic performance. The results show that, Ce is successfully doped into the lattice of ZnO. The products maintain perfect flower-like structure when Ce:ZnO (molar ratio) is 0.5%. However, the flower-like morphology is damaged more and more obviously with the doped concentration increasing. The crystal growth rate accelerates with reaction temperature increasing. Microwave absorbing properties of ZnO can be improved greatly by doping Ce. The reflection loss is more than 10dB when the frequency between 9.8 GHz and 11.6GHz.

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Hybrid switched time-optimal control of underactuated spacecraft

Olivares

Staffetti

2018

Acta Astronautica

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Controllability analysis and attitude path planning of underactuated spacecraft systems

Cited by 12 publications

References 19 publications

Nonlinear Attitude Control Of Underactuated Spacecraft

Nonlinear Attitude Control Of Underactuated Spacecraft

Study on Cerium Doped Flower-Like ZnO Microcrystaline Preparation and its Microwave Absorbing Properties

Hybrid switched time-optimal control of underactuated spacecraft

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