Design and experiment of a passive damping device for the multi-panel solar array

Kong, Yongfang

doi:10.1177/1687814016687965

Cited by 11 publications

(7 citation statements)

References 13 publications

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“…in which K denotes the rotational stiffness and C donates the rotational damping coefficient. Comparing equation (14) with equation ( 4), it illustrates that if rotational root springs and dampers are applied at the root of the solar panel, the effects of rotational stiffness K and damping C are both scared down by a coefficient 1 L 2 . Thus, if rotational type root springs and dampers are applied, to accomplish similar response with the modified root mounting method, the root rotational stiffness 3), (4), and ( 14) illustrate that the rotational and translational root mounting methods theoretically are of the same principle in essence, excepting that the effect of stiffness K and damping coefficient c are simultaneously scaled down for the rotational root mounting method.…”

Section: Theoretical Analysis and Discussionmentioning

confidence: 99%

“…The effectiveness of this passive method is quite limited unless massive of piezoelectric transducers are applied. 13 Kong and Huang 14 investigated a passive vibration suppression of a solar panel by a root damper, and found that a root damper with damping coefficient of 10 5 order of magnitude is needed, and the damper nearly has no effect if the vibration of solar panel is quite small.…”

Section: Introductionmentioning

confidence: 99%

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Improvement on the passive method based on dampers for the vibration control of spacecraft solar panels

Liu

Zhang

et al. 2022

Advances in Mechanical Engineering

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In this study, a passive vibration control method termed as translational root mounting method is proposed and investigated, for suppressing the low frequency vibrations of spacecraft solar panels. The translational root mounting method employs dampers installed at the roots of solar panels to dissipate the dynamic energy. The key of translational root mounting method is that translational root mounting method modifies the fundamental mode shape of the solar panel, by releasing the translation freedoms at its root. The root of the solar panel then has translational freedom instead of rotational freedom. As a result of mode shape modification, the translational root mounting method enables the root dampers to have sufficient working stroke, however without obviously reducing the solar panel’s fundamental frequency. Finite element model of a satellite solar panel with the length of 7 [Formula: see text] is established. Applying the finite element model, the limitation of a conventional passive vibration control method based on rotational root mounting is illustrated. To verify and illustrate the principle of translational root mounting method, the free vibration of the 7 [Formula: see text]-length satellite solar panel controlled by translational root mounting method is analyzed by finite element method. Finite element analysis (FEA) results indicate that the effect of a conventional passive control method is not obvious unless dampers with quite large damping coefficients are employed. In contrast, applying dampers with much smaller damping coefficients, the effect of translational root mounting method is fantastic comparing with the conventional passive method. To optimize the translational root mounting method and theoretically compare it to the conventional passive vibration control method, the solar panel is simplified into a non-linear one-degree of freedom system, and the analytical solution of its low frequency vibration is derived. Applying the analytical solution, it is found that damping ratio of the whole solar panel system does not increase with the damper’s damping coefficient, instead there are optimum values of damping coefficient. Applying the translational root mounting method, for the discussed 7 [Formula: see text]-length satellite solar panel, the damping ratio of which can be elevated from 0.0027 to 0.326.

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Section: Theoretical Analysis and Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Improvement on the passive method based on dampers for the vibration control of spacecraft solar panels

Liu

Zhang

et al. 2022

Advances in Mechanical Engineering

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“…Bose and Gorain 12 studied the vibration control of solar array with an ideal damper at the hub end, and he found out that the control force is proportional to a general nonlinear function of the vibration velocity, in which both torsional and bending modes are considered. Kong and Huang 13 designed a passive vibration damping device for solar arrays with a viscous damper to provide tilted support near the root hinge. Jia et al 14 reported a novel damping platform for large flexible overhanging structure, which is composed of spherical hinge, multi-damping rod and rigid support.…”

Section: Introductionmentioning

confidence: 99%

“…Simulation results show that this damping platform has damping effect on the motion of spacecraft and the vibration of flexible structure. Kong and Huang 13 reported a novel configuration of solar array damper for bending vibration, in which the upper strut contains a viscous damper and the lower strut is rigid. This damper is lockable and located near the solar array root hinge, increasing structural damping without reducing the base frequency.…”

Section: Introductionmentioning

confidence: 99%

Multi-degree-of-freedom vibration reduction strategy of the solar array drive system

Zhu

Lei

2021

Advances in Mechanical Engineering

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The operation disturbance induced by the solar array drive system (SADS) and the residual vibration of solar array following the attitude adjustment of the spacecraft obviously affect the dynamics environment, quick stabilization, and attitude stability of the high-precision spacecraft. However, these two kinds of vibration disturbance are characterized by distinct vibration categories, direction of vibration, and modal shapes. A multi-degree-of-freedom vibration reduction strategy (VRS) was presented to improve the dynamic characteristics of SADS and then to weaken these disturbances synthetically in this paper. SADS applying this VRS was modeled based on the virtual work principle, and the influence of the stiffness and damping parameters of this VRS on the SADS dynamic characteristics was analyzed. Then a prototype of vibration reduction device (VRD) was designed and verified by disturbance characteristic and modal experiments. The results indicate that the equivalent stiffness of VRD is critical to the natural frequency of SADS and thus should be carefully deliberated to avoid resonance. The equivalent damping of VRD always has positive correlation with modal damping. A good performance up to 40% in terms of operation disturbance suppression and a greater than 56% decrease of the damping time for 99% residual vibration have been obtained.

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“…The main existing vibration control methods described in the literature can be classified into two types, namely passive control and active control. Passive control has major advantages including simple structure and it is easy to implement (Morozov and Lopatin, 2011; Kong and Huang, 2017). However, the passive control system, once designed and manufactured, has fixed characteristics such as stiffness and damping.…”

Section: Introductionmentioning

confidence: 99%

Semi-active vibration control of a rotating flexible plate using stiffness and damping actively tunable joint

Gao

Sun

et al. 2019

Journal of Vibration and Control

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Lighter structures are increasingly required for flexible spacecraft. However, low frequency and large amplitude vibration problems are unavoidable due to external disturbances or attitude maneuvering especially when working under a microgravity environment. Therefore, a new methodology involving a semi-active technique using an actively tunable joint with variable stiffness and damping control, capable of handling such issues is proposed in this study. The incentive active joint was conceived with a compact structure, based on the electromagnetic direct drive principle. First, a dynamic model of rotating flexible plate was established. Then, a prototype was fabricated and tested. Finally, on the one hand, numerical simulations and experimental results indicated that, when the joint torsional stiffness changed, a frequency shift phenomenon occurred. On the other hand, two types of noncontact periodic vibration excitation methods along the rotation direction were proposed and the experimental results validated that the major frequency bandwidth of interference signal was 0.08–0.52 Hz with a significant vibration attenuation of 5.5–31.5 dB in effective bandwidth. Moreover, in the low frequency range (0.08–0.43 Hz), variable damping was found to be the main factor and variable stiffness was the secondary factor. However, in the high frequency range (around 0.52 Hz), variable stiffness was dominant and variable damping was inferior. These findings are expected to effectively suppress the low frequency and large amplitude vibration of solar panels with flexible joints.

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Design and experiment of a passive damping device for the multi-panel solar array

Cited by 11 publications

References 13 publications

Improvement on the passive method based on dampers for the vibration control of spacecraft solar panels

Improvement on the passive method based on dampers for the vibration control of spacecraft solar panels

Multi-degree-of-freedom vibration reduction strategy of the solar array drive system

Semi-active vibration control of a rotating flexible plate using stiffness and damping actively tunable joint

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