ACTA AERONAUTICAET ASTRONAUTICA SINICA >
New Kind of Gas Bearing Torsion Pendulum Used for Mass Property Parameters Measurement
Received date: 2013-05-29
Revised date: 2013-08-22
Online published: 2013-08-28
Supported by
National Natural Science Foundation of China (51175529)
The conventional torsion pendulum adopts a rolling bearing and torsion bar vibrating structure. It suffers from excessive length in the vertical direction, low measurement accuracy, poor load capacity, and poor anti-overturning moment, and it cannot meet the requirements of a comprehensive test platform for mass property parameters. The cross-shaped spring block structure is proposed to replace the torsion bar structure, and the size of the torsion pendulum is reduced in the vertical direction. Analysis and experiment prove that the new structure has the same effect as the torsion bar. As the rolling bearing is replaced by the gas bearings, the anti-overturning moment of the torsion pendulum is improved and measurement accuracy reaches up to 0.1%. The finite element method is adopted to simulate the re-corrected Reynolds equation under a cylindrical coordinate system,and then the influence of basic gas bearings structural parameters on load capacity and anti-overturning moment is studied. Finally, the optimized geometrical parameters of a given outer radius bearing are determined. Experimental results demonstrate that the improved test-bed improves the measurement accuracy and vibration stability. It is significant for mass property parameters measurement of spacecraft, such as satellites.
WANG Qiuxiao , KONG Bo , WANG Fei , JIANG Huaifang . New Kind of Gas Bearing Torsion Pendulum Used for Mass Property Parameters Measurement[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2014 , 35(3) : 885 -893 . DOI: 10.7527/S1000-6893.2013.0371
[1] Wang Q X, Wang Y. A new measurement method for mass property parameters[J]. Journal of Chongqing University, 2011, 34(12): 23-28. (in Chinese) 王秋晓, 王迎. 飞行器质量特性参数测量[J]. 重庆大学学报, 2011, 34(12): 23-28.
[2] Xu J, Yang Q J, Bao G, et al. Research on lateral disturbance force of the 5-DoF air-bearing spacecraft simulator [J]. Journal of Astronautics, 2009, 30(5): 1823-1828. (in Chinese) 许剑, 杨庆俊, 包钢, 等. 五自由度气浮台平动时侧向干扰力问题的研究[J]. 宇航学报, 2009, 30(5): 1823-1828.
[3] Zhang X L, Tang S, Wang J, et al. Research on measuring technology of moment of inertia for objects with complex shape [J]. Aerospace Manufacturing Technology, 2011(1): 17-20.(in Chinese) 张晓琳, 唐松, 王军, 等. 复杂形状物体转动惯量测量技术研究[J]. 航天制造技术, 2011(1): 17-20.
[4] Zou Y, Xia Y. A universal measurement method for apparatus moment of inertia in hardware-in-the-loop simulation[J]. Aerospace Control, 2008, 26(5): 74-76.(in Chinese) 邹莹, 夏阳. 一种通用的设备转动惯量测量方法[J]. 航天控制, 2008, 26(5): 74-76.
[5] Kastait J P, Lin W, Lin W J. Design and development of orifice-type aerostatic thrust bearing[J]. SIMTech Technical Reports, 2005, 6(1): 7-12.
[6] Hou W. A measuring method on moment of inertia of large-scale ammunition[J]. Journal of China Ordnance Society, 2005, 1(1): 41-45.
[7] Boynton R, Wiener K. A new high accuracy instrument for measuring moment of inertia and center of gravity[C]//47th Annual Conference of SAWE, 1988.
[8] Mohamed E, Eleshaky. CFD investigation of pressure depressions in aerostatic circular thrust bearings[J]. Tribology International, 2009, 42(7): 1108-1117.
[9] Long W. Study on loading characteristics of orifice compenstated aerostatic thrust bearing[D]. Harbin: School of Mechatronics Engineering, Harbin Institute of Technology, 2010.(in Chinese) 龙威. 平面空气静压轴承承载特性研究[D]. 哈尔滨:哈尔滨工业大学机电工程学院, 2010.
[10] Du J J, Zhang G Q, Liu D. Influences of pressure-equalizing groove on the load capacity of externally pressurized gas journal bearings[J]. Journal of Mechanical Engineering, 2012, 48(15): 107-112.(in Chinese) 杜建军, 张国庆, 刘暾. 均压槽与静压气体轴颈轴承承载特性的关系研究[J]. 机械工程学报, 2012, 48 (15): 107-112.
[11] Guo L B, Wang Z W, Bao G, et al. Finite element analysis of the pressure distribution of externally pressurized spherical gas bearings with inherent compensation[J]. Tribology, 2004, 24(6): 531-535.(in Chinese) 郭良斌, 王祖温, 包钢, 等. 新型环面节流静压气体球轴承压力分布的有限元计算 [J]. 摩擦学学报, 2004, 24(6): 531-535.
[12] Liu D, Liu Y H, Chen S J. Externally pressurized gas lubrication[M]. Harbin: Harbin Institute of Technology Press, 1990: 122-153. (in Chinese) 刘暾, 刘育华, 陈世杰. 静压气体润滑[M]. 哈尔滨:哈尔滨工业大学出版社, 1990:122-153.
[13] Charki A, Diop K, Champmartin S, et al. Numerical simulation and experimental study of thrust air bearings with multiple orifices[J]. International Journal of Mechanical Sciences, 2013, 72: 1-11.
[14] Li Y T, Han D. A simplified calculation method on the performance analysis of aerostatic thrust bearing with multiple pocketed orifice-type restrictors[J]. Tribology International, 2012, 56: 66-67.
[15] Guo L B. Design of configuration parameters of externally pressurized circular[J]. Journal of Wuhan University of Science and Technoloy, 2012, 35(1): 62-64. (in Chinese) 郭良斌. 基于静特性分析的环面节流静压圆盘[J].武汉科技大学学报, 2012, 35(1): 62-64.
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