Effect of drive mechanisms on dynamic characteristics of spacecraft tracking-drive flexible systems

Zhu, Shiyao; Lei, Yiyan; Wu, Xinfeng; Zhang, David

doi:10.1016/j.jsv.2014.12.037

Cited by 16 publications

(5 citation statements)

References 24 publications

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“…Where θ A is the rotation angle of the solar array. The driving system is an independent and complete control system, which consists of the drive controller, the stepper motor with two-phase (A and B) and the motor [33][34][35]. Considering Eq.…”

Section: Modelling For the Rotating Solar Arraymentioning

confidence: 99%

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Attitude control for the rigid spacecraft with the improved extended state observer

Cao

Liu

et al. 2023

Applied Mathematics and Nonlinear Sciences

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In this article, a three-axis attitude manoeuvre spacecraft consisting of a central rigid body and a rotating solar array is studied. The rotating solar array is considered a disturbance to the spacecraft. In the design of the controller, the coupled terms and the rotating solar array are considered a disturbance. The improved extended state observer is proposed by combing the sliding mode observer with the originally extended state observer to estimate the disturbance. The sliding mode control method is adopted to adjust the attitude of the spacecraft. Numerical simulations are presented to demonstrate the outstanding performance of the present observer.

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Section: Modelling For the Rotating Solar Arraymentioning

confidence: 99%

“…The estimation of the rotating velocity z 21 is transformed into a motor current signal i real by the winding current modules. The error between the current signals i real with reference current i re f is the input for the control torque modules, where the is as follows [33,34]:…”

Section: Modelling For the Rotating Solar Arraymentioning

confidence: 99%

Attitude control for the rigid spacecraft with the improved extended state observer

Cao

Liu

et al. 2023

Applied Mathematics and Nonlinear Sciences

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“…However, due to the limit of the current subdivision number, the reference currents approximate to sine or cosine with the step function form. Reference currents for the positive drive are [22]:…”

Section: Electromagnetic Torque Model Of Stepping Motorsmentioning

confidence: 99%

Simulation and Experimental Research on the Disturbance Behavior of a Sun-Tracking Solar Array Driven by a Stepping Motor

Guan

Zhang

et al. 2021

Applied Sciences

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A sun-tracking solar array is an effective solution to the increasing energy demand of spacecrafts. However, the driving torque fluctuation of the solar array driving assembly (SADA) and its oscillatory motion lead to the micro-vibration problem of the spacecraft. In this article, a disturbance torque model of the sun-tracking solar array, which takes its friction and flexibility into consideration, is established. Furthermore, a test platform was built to measure the disturbance force/torque, and a solar array simulator (SAS) was designed to replace the solar array in the ground experiments. Finally, the disturbance torque of the SADA-driven SAS is simulated, and the model is validated by comparing the simulation results with the experimental results. These results show that the frequency error of the model is less than 0.648%, and the amplitude error of the corresponding frequency is less than 22.33%, which indicates that the proposed model can effectively predict the disturbance torque generated by the sun-tracking solar array in orbit. The research provides theoretical guidance for the system optimization design and micro-vibration suppression of spacecrafts.

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“…The flexible solar array is modeled according to the virtual work principle for representing the rigid-body motion, the vibration response, and the dynamic interaction between the two above. Virtual work of the flexible solar array contains components induced by the generalized inertial force, external force, internal force, constraint force, and damping force; 20 thus, in this section, each specific component of virtual work is described in sequence.…”

Section: Modeling Of the Solar Array Sun-tracking Drive Systemmentioning

confidence: 99%

“…As an example, attitude stability values were reduced 47%. 2 Many previous research studies [3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] have focused on the disturbance problem introduced by the suntracking drive of solar array. Among these, a promising emerging study is disturbance mitigation drive strategies, in which disturbance amplitude is attenuated by adjusting the drive command or the controller.…”

Section: Introductionmentioning

confidence: 99%

Disturbance analysis and feed-forward compensation for the flexible solar array sun-tracking drive

Zhu

Lei

2015

Proceedings of the Institution of Mechanical Engineers, Part G:

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This paper analyzes primary disturbance-causing factors inside the flexible solar array drive system based on an electromechanical model. Two feed-forward input compensation drive strategies, derived by decomposing moment component and hypothesizing motion trajectory, respectively, are proposed to weaken the effect of disturbances.Analytic results indicate that the cogging effect of the hybrid stepper motor is a significant factor affecting angular velocity fluctuation, thus generating disturbances. Both of the proposed disturbance-mitigation drive strategies improve angular velocity stability and disturbance torque stability without degrading the pointing accuracy of solar array or altering the original design state of drive assemblies. The effectiveness of disturbance mitigation, however, gradually degrades as cogging torque amplitude errors increase in number. Drive strategy which utilizes the hypothetical motion trajectory method is slightly preferable in terms of disturbance mitigation performance.

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Effect of drive mechanisms on dynamic characteristics of spacecraft tracking-drive flexible systems

Cited by 16 publications

References 24 publications

Attitude control for the rigid spacecraft with the improved extended state observer

Attitude control for the rigid spacecraft with the improved extended state observer

Simulation and Experimental Research on the Disturbance Behavior of a Sun-Tracking Solar Array Driven by a Stepping Motor

Disturbance analysis and feed-forward compensation for the flexible solar array sun-tracking drive

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