Control Allocation of Solar Sail Tip Vanes with Two Degrees of Freedom using Elliptical Constraints

Choi, Mirue; Damaren, Christopher J.

doi:10.2514/6.2012-5002

Cited by 7 publications

(3 citation statements)

References 11 publications

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“…(22), nonlinear programming [7] using the alternative method proposed in [8] can be adopted. For the sake of brevity, this Note will not discuss the details of solving the vane angles using this methodology.…”

Section: Scope Of the Output Torques Of The Vanementioning

confidence: 99%

“…A method based on nonlinear programming to allocate the required control torque among M single DOF control vanes is developed by Metter et al [7]. For the vanes with two DOF, Choi and Damaren [8] propose an alternative formulation to solve for the torques that must be produced by each vane prior to solving for the vane angles from these torques analytically, but the computing process is a bit complicated. This Note extends the insight to the allocating problem and wishes to find a useful and simple method.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Control Capability and Allocation of Solar Sail Tip Vanes over Bounded Movement

Kun

2015

Journal of Guidance, Control, and Dynamics

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Section: Scope Of the Output Torques Of The Vanementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Control Capability and Allocation of Solar Sail Tip Vanes over Bounded Movement

Kun

2015

Journal of Guidance, Control, and Dynamics

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“…Zhai (2015) studied the control torque allocation for the sailcraft with control vanes; the overlapping between the control vanes and the main membrane was also focused on. The control allocation problem for a sailcraft with four 2-DOF control vanes was also focused on in Choi and Damaren (2012). The vane torque was solved instead of the vane angle as expected.…”

Section: Introductionmentioning

confidence: 99%

RBF network based adaptive sliding mode control for solar sails

Lian

Liu

Wang

et al. 2018

AEAT

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Purpose The purpose of this paper is to resolve complex nonlinear dynamical problems of the pitching axis of solar sail in body coordinate system compared with inertial coordinate system. And saturation condition of controlled torque of vane in the orbit with big eccentricity ration, uncertainty and external disturbance under complex space background are considered. Design/methodology/approach The pitch dynamics of the sailcraft in the prescribed elliptic earth orbits is established considering the torques by the control vanes, gravity gradient and offset between the center-of-mass (cm) and center-of-pressure (cp). The maximal torques afforded by the control vanes are numerically determined for the sailcraft at any position with any pitch angle, which will be used as the restriction of the attitude control torques. The finite/infinite time adaptive sliding mode saturation controller and Bang–Bang–Radial Basis Function (RBF) controller are designed for the sailcraft with restricted attitude control torques. The model uncertainty and the input error (the error between real input and ideal control law input) are solved using the RBF network. Findings The finite true anomaly adaptive sliding mode saturation controller performed better than the other two controllers by comparing the numerical results in the paper. The control torque saturation, the model uncertainty and the external disturbance were also effectively solved using the infinite and finite time adaptive sliding mode saturation controllers by analyzing the numerical simulations. The stabilization of the pitch motion was accomplished within half orbit period. Practical implications The complex accurate dynamics can be approximated using the RBF network. The controllers can be applied to stabilization of spacecraft attitude dynamics with uncertainties in complex space environment. Originality/value Advanced control method is used in this paper; saturation of controlled torque of vane is resolved when the orbit with big eccentricity ration is considered and uncertainty and external disturbance under complex space background are settled. Moreover, complex and accurate nonlinear dynamical model of pitching axis of solar sail in body coordinate system compared with inertial coordinate system is provided.

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