Analysis of dynamic characteristics for momentum wheel assembly with joint clearance
To study the effects of joint clearance on the dynamic characteristics of the momentum wheel assembly of satellite antennas, the computational dynamic model of momentum wheel assembly is developed in this article, considering influencing factors including rotor imbalance, flexibility, and joint clea...
Main Authors: | , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
SAGE Publishing
2018-12-01
|
Series: | Advances in Mechanical Engineering |
Online Access: | https://doi.org/10.1177/1687814018818919 |
id |
doaj-53218319f69f4edf89f511cea7798ce5 |
---|---|
record_format |
Article |
spelling |
doaj-53218319f69f4edf89f511cea7798ce52020-11-25T02:52:30ZengSAGE PublishingAdvances in Mechanical Engineering1687-81402018-12-011010.1177/1687814018818919Analysis of dynamic characteristics for momentum wheel assembly with joint clearanceQi Wan0Geng Liu1Haitao Shi2Xiaofeng Zhang3Xin Ning4Shaanxi Engineering Laboratory for Transmissions and Controls, Northwestern Polytechnical University, Xi’an, P.R. ChinaShaanxi Engineering Laboratory for Transmissions and Controls, Northwestern Polytechnical University, Xi’an, P.R. ChinaBeijing Institute of Spacecraft System Engineering, Beijing, P.R. ChinaBeijing Institute of Spacecraft System Engineering, Beijing, P.R. ChinaNational Key Laboratory of Aerospace Flight Dynamics, Northwestern Polytechnical University, Xi’an, P.R. ChinaTo study the effects of joint clearance on the dynamic characteristics of the momentum wheel assembly of satellite antennas, the computational dynamic model of momentum wheel assembly is developed in this article, considering influencing factors including rotor imbalance, flexibility, and joint clearance between rotor and bearing. The nonlinear contact force model and modified Coulomb’s friction model are adopted in the joint clearance of the dynamic model, and then the influence of clearance size, driving angular velocity, and friction coefficient on the dynamic behaviors of momentum wheel assembly is further analyzed. The results indicate that the existence of joint clearance has extraordinary obvious effects on the dynamic system characteristics, which causes the adjusting time to reach a state of continuous fluctuation to become longer compared to that of the ideal joint, and the angular acceleration and contact force appear to have high impulse peaks. The larger the clearance, the more obvious the fluctuation amplitude of the response and the slighter the shaking frequency. Furthermore, increasing the driving angular velocity can cause system oscillation with high frequency and large amplitude. Moreover, the smaller the friction coefficient, the poorer the accuracy and stability of the system, which leads to deviation from ideal performance. Therefore, it is important to consider the joint clearance to predict the dynamic characteristics of momentum wheel assembly.https://doi.org/10.1177/1687814018818919 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Qi Wan Geng Liu Haitao Shi Xiaofeng Zhang Xin Ning |
spellingShingle |
Qi Wan Geng Liu Haitao Shi Xiaofeng Zhang Xin Ning Analysis of dynamic characteristics for momentum wheel assembly with joint clearance Advances in Mechanical Engineering |
author_facet |
Qi Wan Geng Liu Haitao Shi Xiaofeng Zhang Xin Ning |
author_sort |
Qi Wan |
title |
Analysis of dynamic characteristics for momentum wheel assembly with joint clearance |
title_short |
Analysis of dynamic characteristics for momentum wheel assembly with joint clearance |
title_full |
Analysis of dynamic characteristics for momentum wheel assembly with joint clearance |
title_fullStr |
Analysis of dynamic characteristics for momentum wheel assembly with joint clearance |
title_full_unstemmed |
Analysis of dynamic characteristics for momentum wheel assembly with joint clearance |
title_sort |
analysis of dynamic characteristics for momentum wheel assembly with joint clearance |
publisher |
SAGE Publishing |
series |
Advances in Mechanical Engineering |
issn |
1687-8140 |
publishDate |
2018-12-01 |
description |
To study the effects of joint clearance on the dynamic characteristics of the momentum wheel assembly of satellite antennas, the computational dynamic model of momentum wheel assembly is developed in this article, considering influencing factors including rotor imbalance, flexibility, and joint clearance between rotor and bearing. The nonlinear contact force model and modified Coulomb’s friction model are adopted in the joint clearance of the dynamic model, and then the influence of clearance size, driving angular velocity, and friction coefficient on the dynamic behaviors of momentum wheel assembly is further analyzed. The results indicate that the existence of joint clearance has extraordinary obvious effects on the dynamic system characteristics, which causes the adjusting time to reach a state of continuous fluctuation to become longer compared to that of the ideal joint, and the angular acceleration and contact force appear to have high impulse peaks. The larger the clearance, the more obvious the fluctuation amplitude of the response and the slighter the shaking frequency. Furthermore, increasing the driving angular velocity can cause system oscillation with high frequency and large amplitude. Moreover, the smaller the friction coefficient, the poorer the accuracy and stability of the system, which leads to deviation from ideal performance. Therefore, it is important to consider the joint clearance to predict the dynamic characteristics of momentum wheel assembly. |
url |
https://doi.org/10.1177/1687814018818919 |
work_keys_str_mv |
AT qiwan analysisofdynamiccharacteristicsformomentumwheelassemblywithjointclearance AT gengliu analysisofdynamiccharacteristicsformomentumwheelassemblywithjointclearance AT haitaoshi analysisofdynamiccharacteristicsformomentumwheelassemblywithjointclearance AT xiaofengzhang analysisofdynamiccharacteristicsformomentumwheelassemblywithjointclearance AT xinning analysisofdynamiccharacteristicsformomentumwheelassemblywithjointclearance |
_version_ |
1724729501053616128 |