Dynamics and control of spacecraft with a large misaligned rotational component

Wu, Fan; Cao, Xi‐Ren; Butcher, Eric A.; Wang, Feng

doi:10.1016/j.ast.2019.02.029

Cited by 18 publications

(18 citation statements)

References 19 publications

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“…References 1 and 2 conducted study on the sliding mode control system. 1,2 The accuracy of angular velocity reaches 0.005 • ∕s for the rotor. In Reference 11, an adaptive backstepping control algorithm which is used to suspend the shaft at the equilibrium position of platform was adopted.…”

Section: F I G U R E 2 Working Sequence Of Rotating Payload Optical S...mentioning

confidence: 95%

“…2 To address these challenges, Reference 1 considered the classical mechanical bearing which is suitable for traditional optical spacecraft and proposed a sliding mode controller to keep the payload rotating at a constant speed. 1 Though the proposed controller is capable to achieve high pointing precision, the service life of mechanical bearing is short, and its friction is too significant to achieve high precision. Besides, in the aforementioned multibody spacecraft, the mass of payload is large, which would generate dynamic unbalance and static unbalance.…”

Section: F I G U R E 2 Working Sequence Of Rotating Payload Optical S...mentioning

confidence: 99%

“…Considering the structure of spacecraft is similar to dual spin spacecraft, Reference 1 proposed a 7-DOFs dynamical model of the multibody spacecraft similar to dual spin satellite. 1 However, the dynamics of multibody spacecraft connected with AMB is similar to the close formation flying, so the model is not suitable for this article. Reference 5 derived the relative dynamics of satellite-sail transverse formation, and proposed dynamical model under the J2 perturbation.…”

Section: F I G U R E 2 Working Sequence Of Rotating Payload Optical S...mentioning

confidence: 99%

“…(1) Different from previous works solely focused on constant rotational speed of rotating scan optical spacecraft, 1,2 this article proposes a composite adaptive backstepping controller that is designed for the variable rotational speed optical spacecraft. ( 2) To analyze the convergence and time delay margin of two same-origin controllers, by using the discretization and linearization method, the matrix of the reference value representing the system stabilization and time delay margin (angular velocity margin) is given.…”

Section: F I G U R E 2 Working Sequence Of Rotating Payload Optical S...mentioning

confidence: 99%

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Composite adaptive backstepping controller for variable speed rotating scan optical spacecraft

Zhao

Geng

Tao

et al. 2022

Intl J Robust & Nonlinear

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In this article, a rotating speed varying scanning strategy for multibody rotating scan optical spacecraft connected with active magnetic bearing (AMB) is introduced. This strategy can increase the imaging efficiency of the high-resolution observation mission by speeding up the rotation in the nonimaging phase. Then, to address the lack of time delay margin problem brought by variable rotational speed, a composite adaptive backstepping controller (CABC) which composed of two controllers is derived via the Lyapunov theory to guarantee the stability of the closed-loop system. In the system, two control methods switch for different phases. When the optical payload is working, the rotational speed of optical payload is decreased to achieve the high pointing precision. The high precision adaptive backstepping controller (HPABC) is used in this phase. When the optical payload stops working, the rotational speed is high and the high rotating speed adaptive backstepping controller (HRSABC) is designed to guarantee the stability of the system. Then, to give the time delay margin of two controllers and prove that the time delay margin of HRSABC is higher than the HPABC, the reference value, which represents the system stabilization and time delay margin and angular velocity margin, is derived using the discretization and linearization method. Finally, a series of numerical simulations have been performed and the simulation results indicated the new control method can effectively address the control problem brought by rotating speed varying.

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Section: F I G U R E 2 Working Sequence Of Rotating Payload Optical S...mentioning

confidence: 95%

Section: F I G U R E 2 Working Sequence Of Rotating Payload Optical S...mentioning

confidence: 99%

Section: F I G U R E 2 Working Sequence Of Rotating Payload Optical S...mentioning

confidence: 99%

Section: F I G U R E 2 Working Sequence Of Rotating Payload Optical S...mentioning

confidence: 99%

See 2 more Smart Citations

Composite adaptive backstepping controller for variable speed rotating scan optical spacecraft

Zhao

Geng

Tao

et al. 2022

Intl J Robust & Nonlinear

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“…However, this model cannot be directly implemented to RW imbalance effect study. The model which is presented in [24] can be adapted to the problem but it requires considerable modification.…”

Section: Introductionmentioning

confidence: 99%

Effect of Reaction Wheel Imbalances on Attitude and Stabilization Accuracy

et al. 2021

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In this paper, the study of stabilization accuracy of a satellite equipped with a set of reaction wheels (RW) is presented. The model of motion takes into account possible static and dynamic reaction wheel imbalances. Due to the complexity of the model, which leads to the numerical issues, the effects of dynamic and static imbalances on inertial stabilization are studied analytically. As a result, estimations of the attitude and stabilization accuracy are presented in closed form.

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