Journal cover Journal topic
Mechanical Sciences An open-access journal for theoretical and applied mechanics

Journal metrics

  • IF value: 1.211 IF 1.211
  • IF 5-year<br/> value: 1.705 IF 5-year
    1.705
  • SNIP value: indexed SNIP
    indexed
  • SJR value: indexed SJR
    indexed
  • IPP value: indexed IPP
    indexed
  • h5-index value: 15 h5-index 15
Supported by
Logo Library of Delft University of Technology
Logo NWO
Affiliated to
Logo iftomm
Mech. Sci., 8, 51-63, 2017
https://doi.org/10.5194/ms-8-51-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
Research article
20 Mar 2017
Research on a Hierarchical and Simultaneous Gravity Unloading Method for Antenna Pointing Mechanism
Guoyong Yang1,2, Hongguang Wang1, Jizhong Xiao3, Zuowei Wang4, and Lie Ling1 1State Key Laboratory of China, Shenyang Institute of Automation Chinese Academy of Sciences, Shenyang 110016, China
2University of Chinese Academy of Sciences, Beijing 100049, China
3Department of Electrical Engineering, City College of New York, New York, USA
4Beijing Institute of Control Engineering, Beijing, China
Abstract. This paper presents a hierarchical and simultaneous gravity unloading method. An air bearing gravity unloading facility for two-orthogonal-axis antenna pointing mechanism (APM) is designed based on this method. This method is proposed based on the characteristics analysis of the two-orthogonal-axis APM and air bearings. The mechanism of the hierarchical and simultaneous gravity unloading method is described in detail. It solves the coupling problem of two axes and unloads the gravity of both joints hierarchically and simultaneously. The air bearing gravity unloading facility which is a structure mechanism with two layers based on this method is designed with planar air bearing and air spindle. The structure of the facility is described in detail. The dynamic models of the APM with its load in space environment and on the air bearing gravity unloading facility are derived respectively. With the analysing of the driving torques and vertical forces of the APM joints in both models, the results demonstrate that the gravity unloading facility can simulate the microgravity environment successfully. This conclusion is also proved by the dynamic simulation with ADAMS software. The simulation also provides some optimization targets for the gravity unloading facility. At last, the gravity unloading facility is established and some experiments are done. The dynamic models, the simulation results and the experiments all show the effectiveness of the hierarchical and simultaneous gravity unloading method.

Citation: Yang, G., Wang, H., Xiao, J., Wang, Z., and Ling, L.: Research on a Hierarchical and Simultaneous Gravity Unloading Method for Antenna Pointing Mechanism, Mech. Sci., 8, 51-63, https://doi.org/10.5194/ms-8-51-2017, 2017.
Publications Copernicus
Download
Short summary
This paper presents a gravity unloading facility to simulate micro-gravity environment of space. The facility unloads the gravity of artificial antenna of satellite and its pointing mechanism to test the performance of the pointing mechanism on the ground. The facility consists of two layers to unload gravity hierarchically and simultaneously while the antenna pointing mechanism consists of two joints. The calculation, simulation and experiments all show the effectiveness of the method applied.
This paper presents a gravity unloading facility to simulate micro-gravity environment of space....
Share