Research on Whole-spacecraft Vibration Isolation based on Predictive Control

Fei, Hongzi; Song, Enzhe; Jiang, Dawei

doi:10.1016/j.proeng.2011.08.1112

Cited by 10 publications

(3 citation statements)

References 3 publications

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“…Vibration experiments were conducted to verify the effectiveness of the damping system. The experiments were performed by Zhongwen [22]. The results prove that the new system can reduce the vibration response and achieve the integration of load bearing and vibration isolation, as well as maintaining the PAF's stiffness.…”

Section: Introductionmentioning

confidence: 90%

Parallel Load-Bearing and Damping System Design and Test for Satellite Vibration Suppression

et al. 2020

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The traditional series-type satellite vibration suppression scheme significantly decreases satellite frequency, which leads to difficulty in controlling the amplitude. In the present work, a new parallel viscous damping scheme is adopted on the Payload Adaptor Fitting (PAF), which aims to integrate a load-bearing design and vibration reduction. The vibration amplitude and weight are the most important design requirements of the damping system. The Finite Element (FE) model of PAF was established. Through a series of analyses, the appropriate number and coefficient of dampers were determined. The damping force was calculated according to the damping coefficient and the relative velocity between the two ends of the damper. Based on the damping force and the installation dimensions, the damping rod was designed. The force–velocity test was carried out on the damping rod prototype, which showed its performance satisfies the requirements. With the topology optimization and sizing optimization technology, the light-weight supports were designed and manufactured. One damping rod and two supports were assembled as one set of dampers. Eight sets of dampers were installed on the PAF. Vibration tests were conducted on the damping state PAF. The results showed that the proposed system is effective at suppressing vibration and maintaining stiffness simultaneously.

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Section: Introductionmentioning

confidence: 90%

Parallel Load-Bearing and Damping System Design and Test for Satellite Vibration Suppression

et al. 2020

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“…In the work (Fei et al [10]), the authors explored an active technology for vibration isolation of an entire spacecraft based on predictive control during a launch vehicle flight. Fig.…”

Section: Active Vibration Isolation Systemsmentioning

confidence: 99%

Development of Vibration Protection Systems of Spacecraft — State of the Art and Perspectives

PYLYPENKO,

KHOROSHYLOV,

NIKOLAYEV

2023

Kosm. nauka tehnol.

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Vibration loads on the launch vehicle and spacecraft can reach a high level, leading to abnormal and emergency situations. Therefore, the spacecraft structure must not only support the payload and subsystems of the spacecraft but also have sufficient strength and rigid- ity to exclude any emergencies (damage, destruction, unwanted deformations of the structure, failure and failure of instruments and equipment) that may interfere with the success of the mission. The article aims to analyze the state of research on the design of vibration protection systems for spacecraft launched into working orbits by modern launch vehicles. The results of this analysis will contribute to the development of fundamental schemes of vibration protection systems and methods for effectively suppressing spacecraft spatial vibrations. It is shown that the development of new promising vibration protection systems will take place in the following directions: increasing the frequency range and damping parameters of the dynamic coupled system of “spacecraft and vibration isolation system”; changing approach to vibration suppression of the entire spacecraft (as a whole unit) to setting up the system for damping individual (the most re- sponsible and vibration-sensitive) spacecraft; the use the spacecraft active vibration suppression system in combination with a passive vibration protection system; use of schematic diagrams of spacecraft vibration protection systems with the introduction of hydraulic, electromagnetic and mechanical functional elements in order to increase the efficiency of vibration isolation systems; active suppres- sion of random vibrations in outer space during the operation of various spacecraft systems (due to disturbances from engines of orbit correction systems, etc.); using the adapter structure to perform the functions of a passive vibration protection system of the spacecraft.

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“…In the field of aerospace engineering, harsh vibration environment has become a principal factor restricting the development of spacecraft and space exploration activities [1]. The extreme dynamic environment of heavy launch vehicles is one of the main reasons for the launch failure of the entire satellite system [2]. Therefore, reducing the effects of the satellite vibration environment is critical to improving the safety and reliability of satellite launches [3].…”

Section: Introductionmentioning

confidence: 99%

Dynamics Analysis of Active Variable Stiffness Vibration Isolator for Whole-Spacecraft Systems Based on Nonlinear Output Frequency Response Functions

Zhang

Zhu

et al. 2020

Acta Mech. Solida Sin.

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In order to improve the harsh dynamic environment experienced by heavy rockets during different external excitations, this study presents a novel active variable stiffness vibration isolator (AVS-VI) used as the vibration isolation device to reduce excessive vibration of the whole-spacecraft isolation system. The AVS-VI is composed of horizontal stiffness spring, positive stiffness spring, parallelogram linkage mechanism, piezoelectric actuator, acceleration sensor, viscoelastic damping, and PID active controller. Based on the AVS-VI, the generalized vibration transmissibility determined by the nonlinear output frequency response functions and the energy absorption rate is applied to analyze the isolation performance of the whole-spacecraft system with AVS-VI. The AVS-VI can conduct adaptive vibration suppression with variable stiffness to the whole-spacecraft system, and the analysis results indicate that the AVS-VI is effective in reducing the extravagant vibration of the whole-spacecraft system, where the vibration isolation is decreased up to above 65% under different acceleration excitations. Finally, different parameters of AVS-VI are considered to optimize the whole-spacecraft system based on the generalized vibration transmissibility and the energy absorption rate.

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Research on Whole-spacecraft Vibration Isolation based on Predictive Control

Cited by 10 publications

References 3 publications

Parallel Load-Bearing and Damping System Design and Test for Satellite Vibration Suppression

Parallel Load-Bearing and Damping System Design and Test for Satellite Vibration Suppression

Development of Vibration Protection Systems of Spacecraft — State of the Art and Perspectives

Dynamics Analysis of Active Variable Stiffness Vibration Isolator for Whole-Spacecraft Systems Based on Nonlinear Output Frequency Response Functions

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